DOCSLIB.ORG

Synthesis and Biological Evaluation of Fatty Hydrazides of By-Products of Oil Processing Industry

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Synthesis and Biological Evaluation of Fatty Hydrazides of By-Products of Oil Processing Industry www.ijpsonline.com TABLE 2: SAMPLE CALCULATION FOR WEIGHT (WT) TABLE 3: SIMILARITY FACTORS FOR DIFFERENT TEST FOR TEST FORMULATION1 FORMULATIONS Time R T SDR SDT CVR CVT wt Test formulations f2-m f2-m3 f2 (min) 1 51.34 54.68 60.04 30 34.92 40.34 2.26 4.10 6.47 10.16 1.83 2 45.01 46.88 51.08 60 59.50 67.15 3.85 6.34 6.47 9.44 2.59 3 41.86 48.30 51.19 90 79.27 87.01 5.12 4.76 6.45 5.47 2.19 4 37.38 46.46 50.07 180 95.08 97.73 6.14 1.48 6.45 1.51 1.79 5 42.05 44.98 48.05 R = reference, T = Test , SDR = standard deviation of Rt, SDT = standard deviation f2-m = Similarity factor calculated using new approach, f2-m3 = Similarity factor of Tt, CVR = percentage coefficient of variation of Rt, CVT = percentage calculated using approach 3, f2 = Similarity factor calculated using conventional coefficient variation of tT , wt = 1 + (%CV of Rt/MCVE/L) + (% CV of Tt/MCVE/L) method (wt = 1) average value of reference and test at all the time point in Abbreviated New Drug Application (ANDA) point is similar then it is irrational to compute weight submission. If the value of f2-m is greater than 50 for calculating similarity factor because the product than we may safely conclude that products show similar dissolution. The positive and negative points of weight (wt) and (Rt-Tt) will be zero. Therefore f2 is equal to 100. of the new approach will emerge out when various researchers will try the approach with their data sets. In the new scheme of weight (wt) calculation, no parameter was decided on an arbitrary ground. REFERENCES The new approach appears to be more realistic as compared to approach 3. Another advantage of the 1. Moore JW, Flanner HH. Mathematical comparison of dissolution profiles. Pharma Tech 1996;20:64-74. new method is simple calculation steps than approach 2. Gohel MC, Sarvaiya KG, Mehta NR, Soni CD, Vyas VU, Dave RK. 3. Equal stress is given to variability in reference and Assessment of similarity factor using different weighting approaches. test formulation in the new approach. The maximum Diss Tech 2005;12:22-37. 3. Guidance for industry: Dissolution testing of immediate release solid allowable %CV is also considered in the proposed oral dosage forms. US Food and Drug Administration, Rockville, MD, method. It considers within samples (12 units of USA, 1997. reference and 12 units of test) as well as between 4. Shah VP, Tsong Y, Sathe P, Liu JP. In vitro dissolution profile comparison statistics and analysis of the similarity factor, f2. Pharma samples (reference and test formulations) variability Res 1998;15:889-95. because of utilization of standard deviation and averages of reference and test formulations at each time points for calculating weight. The use of new method is recommended in deciding equivalence of Accepted 5 April 2009 test product with innovators product. The approach Revised 9 January 2009 may also find application in selection of a bio-batch. Received 11 September 2006 The use of new approach may become a strong Indian J. Pharm. Sci., 2009, 71 (2): 142-144 Synthesis and Biological Evaluation of Fatty Hydrazides of By-products of Oil Processing Industry S. TOLIWAL*, K. JADAV AND K. PATEL Department of Industrial Chemistry, Institute of Science and Technology for Advanced Studies and Research (ISTAR), Vallabh Vidyanagar-388 120, India Toliwal, et al.: Fatty Hydrazides of By-products of Oil Processing Industry Some new 2-alkyl-5-mercapto-1,3,4-Oxadiazoles and 3-alkyl-5-mercapto-1,2,3-4H triazoles were synthesized from *Address for correspondence E-mail: [email protected] 144 Indian Journal of Pharmaceutical Sciences March - April 2009 www.ijpsonline.com hydrazides of acid oil and oil recovered from spent bleaching earth. These newly synthesized compounds were characterized on the basis of elemental analysis and evaluated for biological properties. Certain derivatives exhibited fairly high antibacterial and antifungal activities when compared with streptomycin and immidil used as standard antibacterial and antifungal agents respectively. Key words: Acid oil, oil recovered from spent bleaching earth (ORSBE), oxadiazoles, triazoles, hydrazides, antibacterial, antifungal, streptomycin, immidil Hydrazides, the acylated derivatives[1] of hydrazine gas at flow rate 10 ml/min using FID at an injector are usually encountered as the simple or temperature of 2500 was found to be: palmitic, 12.03 monosubsituted (RCONHNH2), or as sym-disubsituted for acid oil and 10.54 for ORSBE; stearic, 10.26 for (RCONHNHOR) compounds. The latter have been acid oil and 4.62 for ORSBE; oleic, 36.08 for acid oil referred to as sec-hydrazides. Besides being useful and 21.39 for ORSBE; linoleic, 40.01 for acid oil and for a number of biological properties, hydrazides 52.53 for ORSBE and linolenic, 1.2 for acid oil and are important starting materials for a wide range 6.09% for ORSBE. All other chemicals used in the of derivatives utilizable in pharmaceutical products study were of laboratory grade and were used without and as surfactants. Hydrazides have been known any modification. to be associated with antibacterial[2], antifungal[3], anthelmintic[4] and anticonvulsant[5] activities. Methyl esters of acids from oil were prepared by acid Various thiosemicarbazide derivatives are reported catalyzed esterification using standard method[14]. The to possess useful pharmacological properties like, esters were purified by distillation under 4-5 mm Hg antidepressant[6], antiinflammatory[7] and analgesic[8] pressure. activities. In addition to the antibacterial[9] activities exhibited by several triazole derivatives, they are Preparation of fatty hydrazides and their derivatives is also known for their fungicidal, analgesic and schematically represented in Fig 1. For the preparation [14] antiinflammatory[10] activities. Oxadiazoles and of fatty acid hydrazides a solution of fatty acid their derivatives are well known chemotherapeutic esters (0.1 M) in ethanol (150 ml) was mixed with agents and their utility has muscle relaxant, and hydrazine hydrate (95%, 0.2 M) was added. The bacteriostatic[11] are well known. Biological assessment reaction mixture was refluxed for 3-4 h. It was cooled, of fatty hydrazide and their derivatives has been the and the solid separated was collected, washed and focus of earlier investigative studies[12,13]. recrystallised from ethanol. The present work is carried out with a view to impart For the preparation of 2-alkyl-5-mercapto-1,3,4- [15] value addition targets by-products, acid oil and oil oxadiazole a solution of a fatty acid hydrazide recovered from spent bleaching earth (ORSBE) used (0.01 M) in 10 ml of ethanol, a solution of carbon for soya bean oil. The fatty hydrazides are further derivatized to obtain new antibacterial and antifungal N N N NH NH2NH2 CS2/KOH RCOOC2H5 RCONHNH2 agents. (A) R C C-SH R C C=S O O (B) The by-products of oil processing industries- acid oil KSCN RCONHNH2 RCONHNHCSNH2 and ORSBE were procured from Ashwin Vanaspti (A) (C) Ltd, Samlaya. Analysis of oils for physicochemical characteristics was tested by standard BIS methods NaOH/I /KI KOH/C H OH and it gave: sp.gr at 30°, 0.915 and 0.921; acid value, 2 2 5 130.38 and 18.82; iodine value, 115.51 and 123.24; N N N N N NH R C R C R C C=S saponification value, 182.75 and 186.01 for acid oil C NH2 C SH and ORSBE, respectively. The fatty acid composition O N N (E) H H of oils was determined by gas liquid chromatography (D) (GLC) of methyl esters using capillary column (2 Fig. 1: Preparation of fatty hydrazides and their alkyl derivatives. A- Fatty hydrazide, B- 2-alkyl-5-mercapto-1,3,4-oxadiazole, C- m×0.32 mm) packed with 50% cynopropyl phenyl thiosemicarbazide, D- 3-alkyl-5-mercapto-1,2,4-4H-triazoles, E- polysiloxane (BP225) at 2200 with nitrogen as carrier 2-alkyl-5-amino-1,3,4-oxadiazole March - April 2009 Indian Journal of Pharmaceutical Sciences 145 www.ijpsonline.com disulfide (2 g) in 3 ml of water and 1 g of potassium TABLE 1: PHYSICO-CHEMICAL PROPERTIES OF hydroxide were refluxed for 7-8 h until the H S is HYDRAZIDES AND THEIR derivatives 2 Sample Melting Yield Nitrogen ceased. The contents were cooled and acidified with code point0 % Content (%) dilute hydrochloric acid. The separated solid was Calculated Found filtered, collected, washed with water, dried and II 81.0 82.1 9.52 8.68 recrystallised from ethanol. A IIB 76.8 74.6 11.90 10.34 II 71.8 72.0 8.33 9.24 [16] F For the preparation of fatty acid thiosemicarbazide IIG 86.9 76.3 12.54 12.55 II 74.5 84.2 13.17 11.78 a solution of a fatty acid hydrazide (0.02 M) in H V 79.3 69.3 9.52 9.89 methanol (50 ml), potassium thiocynate (0.03 M) A VB 76.1 72.5 11.90 10.86 and hydrochloric acid 3 ml were mixed added with VF 73.2 81.2 8.33 8.94 VG 84.7 78.3 12.54 10.58 constant stirring. The mixture was immediately V 78.1 72.6 13.17 12.18 evaporated to dryness on a steam bath and heated for H IIA- Fatty hydrazide of acid oil, IIB-thiosemicarbazide of acid oil, IIF -2-alkyl- 5-mercapto-1,3,4-oxadiazole of acid oil, II - 3-alkyl-5-mercapto-1,2,4-4H- an additional hour with another 50 ml ethanol.
Load more

Recommended publications
  • Synthesis of Hydrazide-Hydrazone Derivatives and Their Evaluation of Antidepressant, Sedative and Analgesic Agents R
    R M Mohareb et al, /J. Pharm. Sci. & Res. Vol.2(4), 2010, 185-196 Synthesis of hydrazide-hydrazone derivatives and their evaluation of antidepressant, sedative and analgesic agents 1,2 1 2 3 R. M. Mohareb , K. A. El-Sharkawy , M. M. Hussein and H. M. El-Sehrawi 1Faculty of Pharmacy, Organic Chemistry Department, October University for Modern Sciences and Arts (MSA) – El-Wahat Road – 6 October City – Egypt. 2Department of Chemistry, Faculty of Science, Cairo University, Giza, A. R. Egypt. 3Faculty of Pharmacy (Girls), Pharmaceutical Chemistry Department, Al-Azhar University, Nasr City, Cairo, A.R. Egypt. Abstract: The reaction of cyanoacetylhydrazine (1) with -bromo(4-methoxyacetophenone) (2) gave the hydrazide- hydrazone derivative 3. Compound 3 reacted with either potassium cyanide or potassium thiocyanide to give the cyanide or thiocyanide derivatives 4a or 4b respectively. The reaction of compound 3 with either hydrazine hydrate or phenylhydrazine gave the hydrazine derivatives 6a or 6b respectively. The latter compounds underwent a series of heterocyclization when react with different reagents to give 1,3,4-triazine and pyridine derivatives. The antidepressant, sedative and analgesic activities of the newly synthesized products were evaluated. Keywords: Antidepressant. hydrazide-hydrazone. pyridine. sedative. 1,3,4-triazine, Introduction: Micro Analytical Data Unit at Cairo We report here the synthesis of a series of University, Giza, Egypt. hydrazide-hydrzones via the reaction of Synthetic pathways are presented in cyanoacetylhydrazine 1 with -bromo(4- Schemes 1-2 and physicochemical, methoxyacetophenone) 2. The hydrazide- spectral data for the newly synthesized hydrazones have been demonstrated to compounds are given in Tables 1 and 2.
    [Show full text]
  • The. Reactions Op Semicarbazones, Thiosbmicarbazonbs
    THE. REACTIONS OP SEMICARBAZONES, THIOSBMICARBAZONBS AMD RELATED COMPOUNDS, IMCLTJDIMG THE ACTION OF AMINES ON AMINOCARBOCARBAZONES. A THESIS PRESENTED BY JOHN MCLEAN B.So. IN FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY OF THE UNIVERSITY OF GLASGOW. / MAY *936. THE ROYAL TECHNICAL COLLEGE, GLASGOW. ProQuest Number: 13905234 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a com plete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. uest ProQuest 13905234 Published by ProQuest LLC(2019). Copyright of the Dissertation is held by the Author. All rights reserved. This work is protected against unauthorized copying under Title 17, United States C ode Microform Edition © ProQuest LLC. ProQuest LLC. 789 East Eisenhower Parkway P.O. Box 1346 Ann Arbor, Ml 48106- 1346 This research was carried out in the Royal Technical College, Glasgow, under the supervision of Professor F.J. Wilson, whose helpful advice was greatly appreciated by the author. CONTENTS. Page General Introduction, PART 1. The Action of Amines on Amino Carhocarbazones. Introduction... ..... ,..................... 4 Benzylamine......... Theoretical.............. 11 ......... Experimental............. 15 Aniline............. Theoretical............ 21 ............. Experimental............ 22 B-Naphthylamine..... Theoretical............... 27
    [Show full text]
  • Design and Biological Evaluation of Biphenyl-4-Carboxylic Acid Hydrazide-Hydrazone for Antimicrobial Activity
    Acta Poloniae Pharmaceutica ñ Drug Research, Vol. 67 No. 3 pp. 255ñ259, 2010 ISSN 0001-6837 Polish Pharmaceutical Society DESIGN AND BIOLOGICAL EVALUATION OF BIPHENYL-4-CARBOXYLIC ACID HYDRAZIDE-HYDRAZONE FOR ANTIMICROBIAL ACTIVITY AAKASH DEEP1*, SANDEEP JAIN2, PRABODH CHANDER SHARMA3 PRABHAKAR VERMA4, MAHESH KUMAR4, and CHANDER PARKASH DORA1 1Department of Pharmaceutical Sciences, G.V.M. College of Pharmacy, Sonepat-131001, India 2Department of Pharm. Sciences, Guru Jambheshwar University of Science and Technology, Hisar-125001, India 3Institute of Pharmaceutical Sciences, Kurukshetra University, Kurukshetra-136119, India 4Institute of Pharmaceutical Sciences, Maharishi Dayanand University, Rohtak-124001, India Abstract: Seven biphenyl-4-carboxylic acid hydrazide-hydrazones have been synthesized. These hydrazone derivatives were characterized by CHN analysis, IR, and 1H NMR spectral data. All the compounds were eval- uated for their in vitro antimicrobial activity against two Gram negative strains (Escherichia coli and Pseudomonas aeruginosa) and two Gram positive strains (Bacillus subtilis and Staphylococcus aureus) and fun- gal strain Candida albicans and Aspergillus niger. All newly synthesized compounds exhibited promising results. Keywords: synthesis, hydrazide-hydrazones, antimicrobial activity Development of novel chemotherapeutic EXPERIMENTAL agents is an important and challenging task for the medicinal chemists and many research programs are Melting points were determined in open capil- directed towards the design and synthesis of new lary tubes and are uncorrected. Infra-red spectra drugs for their chemotherapeutic usage. Hydrazone were recorded on Perkin Elmer Spectrum RXI FTIR compounds constitute an important class for new spectrophotomer in KBr phase. 1H NMR spectra drug development in order to discover an effective were run on BRUKER spectrometer (300 MHz) compound against multidrug resistant microbial using TMS as an internal standard.
    [Show full text]
  • Toxicological Profile for Hydrazines. US Department Of
    TOXICOLOGICAL PROFILE FOR HYDRAZINES U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES Public Health Service Agency for Toxic Substances and Disease Registry September 1997 HYDRAZINES ii DISCLAIMER The use of company or product name(s) is for identification only and does not imply endorsement by the Agency for Toxic Substances and Disease Registry. HYDRAZINES iii UPDATE STATEMENT Toxicological profiles are revised and republished as necessary, but no less than once every three years. For information regarding the update status of previously released profiles, contact ATSDR at: Agency for Toxic Substances and Disease Registry Division of Toxicology/Toxicology Information Branch 1600 Clifton Road NE, E-29 Atlanta, Georgia 30333 HYDRAZINES vii CONTRIBUTORS CHEMICAL MANAGER(S)/AUTHOR(S): Gangadhar Choudhary, Ph.D. ATSDR, Division of Toxicology, Atlanta, GA Hugh IIansen, Ph.D. ATSDR, Division of Toxicology, Atlanta, GA Steve Donkin, Ph.D. Sciences International, Inc., Alexandria, VA Mr. Christopher Kirman Life Systems, Inc., Cleveland, OH THE PROFILE HAS UNDERGONE THE FOLLOWING ATSDR INTERNAL REVIEWS: 1 . Green Border Review. Green Border review assures the consistency with ATSDR policy. 2 . Health Effects Review. The Health Effects Review Committee examines the health effects chapter of each profile for consistency and accuracy in interpreting health effects and classifying end points. 3. Minimal Risk Level Review. The Minimal Risk Level Workgroup considers issues relevant to substance-specific minimal risk levels (MRLs), reviews the health effects database of each profile, and makes recommendations for derivation of MRLs. HYDRAZINES ix PEER REVIEW A peer review panel was assembled for hydrazines. The panel consisted of the following members: 1. Dr.
    [Show full text]
  • Synthesis, Characterization of New Hydrazone Derivatives Containing Heterocyclic Meioty Ahmed A
    Saheeb & Damdoom (2020): Synthesis and characterization of new hydrazine compound Oct 2020 Vol. 23 Issue 16 Synthesis, Characterization of new Hydrazone derivatives containing heterocyclic meioty Ahmed A. Saheeb1 and Wasan k.Damdoom2 1Col. of Agric. , University of Summer , Iraq. 2Col. of pharmacy, National of Science and Technology, Thi-Qar, Iraq. *Corresponding author: [email protected], [email protected] ( Damdoom) Abstract The present work includes synthesis and characterization of new hydrazine, compound (F1) derived from ethyl benzoate. Firstly, benzoate hydrazide [A1] has been synthesized from the condensation of ethyl benzoate with hydrazine. Then the benzoate hydrazide was reacted with phenylisothiocynate to prepare [B1]. Cyclization reaction of product [B1] with sodium hydroxide produced terazole derivative [C1].On the other hand, alkylation reaction of compound [C1] with chloroethylacetate in the presence of Sodium acetatetrihydrate as a catalyst resulted [D]. The acid hydrazide derivative [E1] has been synthesized by the reaction of compound [D1] with hydrazine hydrate. Finally, hydrazone derived [F1] was synthesized by the condensation reaction of the acid hydrazide [E1] with isatin. The synthesized compound was characterized by, FT-IR, 1H-NMR, 13C-NMR and Mass spectra. Compound (F2) derived from Methyl-4-hydroxybenzoate react with ethylchloroacetate ton prepare (A2) this compound react with hydrazine by reflux and used ethanol as as asolvent to give (B2). The hyrazone [C2] was synthesized by the condensation of 4-(2-hydrazino-2-oxoethoxy) benzohydrazide, and add 5 drops of acetic acid. Then the mixture refluxed for 8 hours (monitored by TLC). The hydrazone was precipitated, filtered and recrystallized from ethanol) to get white solid.
    [Show full text]
  • Synthesis of 1,1-Dialkyhydrazines and Their Hydroxyl Radical Degradation in Aqueous Environments
    Western Michigan University ScholarWorks at WMU Master's Theses Graduate College 8-2012 Synthesis of 1,1-Dialkyhydrazines and their Hydroxyl Radical Degradation in Aqueous Environments Benjamin F. Strong Follow this and additional works at: https://scholarworks.wmich.edu/masters_theses Part of the Environmental Chemistry Commons Recommended Citation Strong, Benjamin F., "Synthesis of 1,1-Dialkyhydrazines and their Hydroxyl Radical Degradation in Aqueous Environments" (2012). Master's Theses. 33. https://scholarworks.wmich.edu/masters_theses/33 This Masters Thesis-Open Access is brought to you for free and open access by the Graduate College at ScholarWorks at WMU. It has been accepted for inclusion in Master's Theses by an authorized administrator of ScholarWorks at WMU. For more information, please contact [email protected]. SYNTHESIS OF 1,1-DIALKYLHYDRAZINES AND THEIR HYDROXYL RADICAL DEGRADATION IN AQUEOUS ENVIRONMENTS by Benjamin F. Strong A Thesis Submitted to the Faculty ofthe Graduate College in partial fullilment ofthe requirements for the Degree ofMaster of Science Department ofChemistry Advisor: James J. Kiddle, Ph.D. Western Michigan University Kalamazoo, Michigan August 2012 THE GRADUATE COLLEGE WESTERN MICHIGAN UNIVERSITY KALAMAZOO, MICHIGAN Date June 21, 2012 WE HEREBY APPROVE THE THESIS SUBMITTED BY Benjamin F. Strong ENTITLED Synthesis of 1,1-dialkylhydrazines and their Hydroxyl Radical Degradation in Aqueous Environments AS PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE Master of Science DEGREE OF Chemistry (Department) James J. Kiddle Thesis Committee Chair Chemistry Blht Q(m (Program) Elke Schitffers Thesis Committee Member \ Andre Venter Thesis Committee Member APPROVED Date AjQL<=k ?OiZ Dean of The Graduate College SYNTHESIS OF 1,1-DIALKYLHYDRAZINES AND THEIR HYDROXYL RADICAL DEGRADATION IN AQUEOUS ENVIRONMENTS Benjamin F.
    [Show full text]
  • Synthesis and Characterization of Some Biologically Important 1-Isopropyl Indazolyl Thiadiazole, Triazole and Oxadiazole by Coventional and Nonconventional Methods
    SYNTHESIS AND CHARACTERIZATION OF SOME BIOLOGICALLY IMPORTANT 1-ISOPROPYL INDAZOLYL THIADIAZOLE, TRIAZOLE AND OXADIAZOLE BY COVENTIONAL AND NONCONVENTIONAL METHODS S.B. Kale, M.S. More and B.K.Karale* P.G. Department of Chemistry, S.S.G.M. College, Kopargaon, Ahmednagar - 423601 (M.S.), India e-mail: bkkarale@y ahoo. com Abstract: Compound 1 on treatment with SOCl2 followed by hydrazine hydrate gave acid hydrazide 2. Variously substituted phenyl isothicyanates with acid hydrazide 2 gave thiosemicarbazides 3. These thiosemicarbazides 3 on treatment with Cone. H2S04 and dil. NaOH gave thiadiazoles 4 and triazoles 5 respectively. Compound 3 on treatment with I2 in KI, in presence of NaOH gives oxadiazole 6. Introduction According to the literature survey, indazole compounds are associated with various physiological and biological properties and thus find important use in medicine. Indazole compounds are capable of mediating tyrosine kinase signal transduction and their by inhibit unwanted cell proliferation1,2. Indazole derivatives are examined for analgesic-anti-inflammatory activity3. A ruthenium co-ordination complex (Rulnd) is one the most effective anticancer4 ruthenium compound; poisoning5 of Topoisomerase II by indazole complex is analysed. Indazole ring was used as the initial template to test the hypothesis in order to increase potency as Leukotriene receptor antagonists6, 7' 8.Indazole containing inhibitor series for SAH/MTA nucleosidase are inhibitors with broad spectrum antimicrobial activity9. Indazole derivatives are used as anti-inflammatory agents10, anticancer10,11 agents and also used as sunscreens12. Thiosemicarbazide are found to be associated with antibacterial13, antifungal14 herbicidal15, antiacetyl Cholinesterase16 and antituburcular17 activities. Compounds containing 1,3,4-thiadiazole nucleus have been reported to a variety of biological activities like fungitoxic18, CNS stimulant19,anticholinergic20, hypoglycemia21, and anticonvulsant22,23.
    [Show full text]
  • Synthesis and Bioactivity of Hydrazide-Hydrazones with the 1-Adamantyl-Carbonyl Moiety
    molecules Article Synthesis and Bioactivity of Hydrazide-Hydrazones with the 1-Adamantyl-Carbonyl Moiety Van Hien Pham 1 , Thi Phuong Dung Phan 2, Dinh Chau Phan 3,* and Binh Duong Vu 1,* 1 Drug R&D Center, Vietnam Military Medical University. No.160, Phung Hung str., Phuc La ward, Ha Dong district, Hanoi 100000, Vietnam; [email protected] 2 Department of Pharmaceutical Chemistry, Hanoi University of Pharmacy. No. 15, Le Thanh Tong Str., Hoan Kiem district, Hanoi 100000, Vietnam; [email protected] 3 Hanoi University of Science and Technology. No.1, Dai Co Viet str., Bach Khoa ward, Hai Ba Trung district, Hanoi 100000, Vietnam * Correspondence: [email protected] (D.C.P.); [email protected] (B.D.V.); Tel.: +84-983-425-460 (B.D.V.); Fax: +84-243-688-4077 (B.D.V.) Academic Editor: Simona Collina Received: 3 October 2019; Accepted: 4 November 2019; Published: 5 November 2019 Abstract: Reaction of 1-adamantyl carbohydrazide (1) with various substituted benzaldehydes and acetophenones yielded the corresponding hydrazide-hydrazones with a 1-adamantane carbonyl moiety. The new synthesized compounds were tested for activities against some Gram-negative and Gram-positive bacteria, and the fungus Candida albicans. Compounds 4a, 4b, 5a, and 5c displayed potential antibacterial activity against tested Gram-positive bacteria and C. albicans, while compounds 4e and 5e possessed cytotoxicity against tested human cancer cell lines. Keywords: adamantane derivatives; hydrazide-hydrazone; antimicrobial; cytotoxicity activity 1. Introduction The hydrazide-hydrazones derivatives, which play an important role in organic and medicine chemistry, have attracted a large number of researchers over the years because of their promising biological activities, including antimicrobial [1–4], anticancer [5–7], antituberculosis [2,8–10], antiviral [11], and anticonvulsant [2] activities.
    [Show full text]
  • UC Berkeley UC Berkeley Previously Published Works
    UC Berkeley UC Berkeley Previously Published Works Title Synthesis of well-defined polyethylene-polydimethylsiloxane-polyethylene triblock copolymers by diimide-based hydrogenation of polybutadiene blocks Permalink https://escholarship.org/uc/item/7dk4d4pb Journal Macromolecules, 47(13) ISSN 0024-9297 Authors Petzetakis, N Stone, GM Balsara, NP Publication Date 2014-07-08 DOI 10.1021/ma500686k Peer reviewed eScholarship.org Powered by the California Digital Library University of California Article pubs.acs.org/Macromolecules Synthesis of Well-Defined Polyethylene−Polydimethylsiloxane− Polyethylene Triblock Copolymers by Diimide-Based Hydrogenation of Polybutadiene Blocks † ‡ † § Nikos Petzetakis, Gregory M. Stone, and Nitash P. Balsara*, , † Department of Chemical & Biomolecular Engineering, University of California, Berkeley, California 94720, United States ‡ Malvern Instruments Inc., 117 Flanders Road, Westborough, Massachusetts 01581, United States § Materials Sciences Division & Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, United States *S Supporting Information ABSTRACT: Polyethylene, PE, is a crystalline solid with a relatively high melting temperature, and it exhibits excellent solvent resistance at room temperature. In contrast, polydimethylsiloxane, PDMS, is a rubbery polymer with an ultralow glass transition temperature and poor solvent resistance. PE−PDMS block copolymers have the potential to synergistically combine these disparate properties.
    [Show full text]
  • Synthesis and Trypanocidal Activity of Salicylhydrazones and P-Tosylhydrazones of S-(+)-Carvone and Arylketones on African Trypanosomiasis
    Journal of Applied Pharmaceutical Science Vol. 5 (06), pp. 001-007, June, 2015 Available online at http://www.japsonline.com DOI: 10.7324/JAPS.2015.50601 ISSN 2231-3354 Synthesis and trypanocidal activity of salicylhydrazones and p-tosylhydrazones of S-(+)-carvone and arylketones on African trypanosomiasis Bienvenu GLINMA 1.2.4, Fernand A. GBAGUIDI 1.2.3*, Urbain C. KASSEHIN 3, Salomé D.S. KPOVIESSI1, Alban HOUNGBEME 2, Horrhus D. HOUNGUE3, Georges C. ACCROMBESSI 1 and Jacques H. POUPAERT3 1Laboratoire de Chimie Organique Physique et de Synthèse, Département de Chimie, Faculté des Sciences et Techniques, Université d’Abomey-Calavi, 01 BP 4521 Cotonou, République Bénin. 2Laboratoire de Pharmacognosie/Institut de Recherche et d’Expérimentation en Médecine et Pharmacopée Traditionnelles (IREMPT) / Centre Béninois de la Recherche Scientifique et Technique (CBRST)/ UAC, 01 BP 06 Oganla Porto-Novo. 3Laboratoire de Chimie Pharmaceutique Organique, Ecole de Pharmacie, Faculté des Sciences de la Santé, Université d'Abomey-Calavi, Campus du Champ de Foire, 01 BP 188, Cotonou, Bénin. 4Louvain Drug Research Institute (LDRI), School of Pharmacy, Université Catholique de Louvain, B1 7203 Avenue Emmanuel Mounier 72, B-1200 Brussels, Belgique. ABSTRACT ARTICLE INFO Article history: Hydrazones are nowadays considered to be good candidates for various pharmaceutical applications. Here, we Received on: 06/03/2015 have synthesized two series of hydrazones: salicylhydrazones (GS1-4) and p-tosylhydrazones (GT1-4) from S- Revised on: 09/04/2015 (+)-carvone and three aryketones with good yields (57-91%). Molecules were characterized by elemental Accepted on: 22/04/2015 analyses; TLC, NMR 1H, NMR 13C and MS. Submitted, in vitro, to their antiparasitic testing on Trypanosoma Available online: 27/06/2015 brucei brucei, and toxicity on Artemia salina Leach, all compounds except GT2 showed significant antitrypanosomal activity IC50 ranging from 1 to 34 micromolar (µM).
    [Show full text]
  • Photo- and Acid-Degradable Polyacylhydrazone–Doxorubicin
    polymers Article Photo- and Acid-Degradable Polyacylhydrazone– Doxorubicin Conjugates Maria Psarrou 1, Martha Georgia Kothri 2 and Maria Vamvakaki 1,3,* 1 Department of Materials Science and Technology, University of Crete, Vasilika Vouton, 700 13 Heraklion, Crete, Greece; [email protected] 2 School of Medicine, University of Crete, Vasilika Vouton, 700 13 Heraklion, Crete, Greece; [email protected] 3 Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, Vasilika Vouton, 700 13 Heraklion, Crete, Greece * Correspondence: [email protected]; Tel.: +30-2810-545019 Abstract: Light-mediated polymer degradation has attracted considerable attention in various applications, including photo-patterning, tissue engineering and photo-triggered drug delivery. In this study, we report the synthesis and characterization of a new, linear, main-chain photo- and acid- degradable copolymer based on acylhydrazone linkages. The polymer was synthesized via a step- growth copolymerization of adipic acid dihydrazide with a bifunctional poly(ethylene glycol) bearing benzaldehyde end-groups, under mild acidic conditions, to afford a hydrophilic PEG-alt-adipic acid (PEG-alt-AA) alternating copolymer. The synthesized polymer was characterized by size exclusion chromatography, proton nuclear magnetic resonance and attenuated total reflection-Fourier transform infrared spectroscopies. The main-chain photo- and acid-induced degradation of the copolymer in dimethylsulfoxide and water, respectively, was verified by UV-vis spectroscopy at light intensities Citation: Psarrou, M.; Kothri, as low as 0.1 mW cm−2 at λ = 254 nm. Next, a model anticancer drug, doxorubicin (DOX), was M.G.; Vamvakaki, M. Photo- and Acid-Degradable Polyacylhydrazone– chemically linked to the polymer chain end(s) via acylhydrazone bond(s), resulting in amphiphilic Doxorubicin Conjugates.
    [Show full text]
  • A New Series of Hydrazide-Hydrazones Based 2-Oxonicotinonitriles As Antimicrobial Agents: Design, Synthesis and Antimicrobial Evaluation
    A new series of hydrazide-hydrazones based 2-oxonicotinonitriles as antimicrobial agents: Design, synthesis and antimicrobial evaluation H.A. El-Sayed1*, A. H. Moustafa1#, M. Abd El-Moneim3, H. M. Awad2 and A. Esmat3 1Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, Egypt. 2Department of Tanning Materials and Leather Technology, National Research Centre, Dokki 12622, Cairo, Egypt. 3Department of Chemistry, Faculty of Science, Port Said University, Port Said, Egypt Una nueva serie de 2-oxonicotinonitrilos a base de hidrazida-hidrazonas como agentes antimicrobianos: Diseño, síntesis y evaluación antimicrobiana Una nova sèrie de 2-oxonicotinonitrilos a base de hidrazida-hidrazonas com agents antimicrobians: Disseny, síntesi i avaluació antimicrobiana RECEIVED: 6 JANUARY 2018; REVISED: 15 MARCH 2018; ACCEPTED: 5 APRIL 2018 lizados a excepción de los compuestos 4b, 5c, 5d y SUMMARY 6b que mostraban una actividad moderada hacia el B. subtilus. Regiospecific alkylation of 2-oxonicotinonitriles 1a,b with ethyl bromoacetate followed by hydrozinol- Palabras clave: 2-Oxonicotinonitrilo; alquilación; ysis afforded acetic acid hydrazides3a,b . The latter hidrazida ácida; hidrazida-hidrazona; antimicrobia- compounds were condensed with a variety of carbonyl na. containing compounds to give the target compounds of hydrazones 4a,b, 5a,b, 6a-h and 7a,b. The antimi- RESUM crobial activity of the new synthesized compounds do not showed activity against tested micro-organisms Alquilació regioespecífica de 2-oxonicotinonitrilos except compounds 4b, 5c, 5d and 6b showed moder- 1a,b amb bromoacetato de etilo seguida de la hidra- ate activity towards B. subtilus zinolisis permès per les hidrazides d’àcid acètic 3a,b. Aquests últims compostos es condensaven amb una Keywords: 2-Oxonicotinonitrile; alkylation; acid varietat de compostos que tenen carbonil, per donar hydrazide; hydrazide-hydrazone; antimicrobial.
    [Show full text]