Isolation and Identification of Cyclic Polyketides From
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Enediynes, Enyneallenes, Their Reactions, and Beyond
Advanced Review Enediynes, enyne-allenes, their reactions, and beyond Elfi Kraka∗ and Dieter Cremer Enediynes undergo a Bergman cyclization reaction to form the labile 1,4-didehy- drobenzene (p-benzyne) biradical. The energetics of this reaction and the related Schreiner–Pascal reaction as well as that of the Myers–Saito and Schmittel reac- tions of enyne-allenes are discussed on the basis of a variety of quantum chemical and available experimental results. The computational investigation of enediynes has been beneficial for both experimentalists and theoreticians because it has led to new synthetic challenges and new computational methodologies. The accurate description of biradicals has been one of the results of this mutual fertilization. Other results have been the computer-assisted drug design of new antitumor antibiotics based on the biological activity of natural enediynes, the investigation of hetero- and metallo-enediynes, the use of enediynes in chemical synthesis and C materials science, or an understanding of catalyzed enediyne reactions. " 2013 John Wiley & Sons, Ltd. How to cite this article: WIREs Comput Mol Sci 2013. doi: 10.1002/wcms.1174 INTRODUCTION symmetry-allowed pericyclic reactions, (ii) aromatic- ity as a driving force for chemical reactions, and (iii) review on the enediynes is necessarily an ac- the investigation of labile intermediates with biradical count of intense and successful interdisciplinary A character. The henceforth called Bergman cyclization interactions of very different fields in chemistry provided deeper insight into the electronic structure involving among others organic chemistry, matrix of biradical intermediates, the mechanism of organic isolation spectroscopy, quantum chemistry, biochem- reactions, and orbital symmetry rules. -
Bruxner Park Flora Reserve Working Plan
Bruxner Park Flora Reserve Working Plan Working Plan for Bruxner Park Flora Reserve No 3 Upper North East Forest Agreement Region North East Region Contents Page 1. DETAILS OF THE RESERVE 2 1.1 Introduction 2 1.2 Location 2 1.3 Key Attributes of the Reserve 2 1.4 General Description 2 1.5 History 6 1.6 Current Usage 8 2. SYSTEM OF MANAGEMENT 9 2.1 Objectives of Management 9 2.2 Management Strategies 9 2.3 Management Responsibility 11 2.4 Monitoring, Reporting and Review 11 3. LIST OF APPENDICES 11 Appendix 1 Map 1 Locality Appendix 1 Map 2 Cadastral Boundaries, Forest Types and Streams Appendix 1 Map 3 Vegetation Growth Stages Appendix 1 Map 4 Existing Occupation Permits and Recreation Facilities Appendix 2 Flora Species known to occur in the Reserve Appendix 3 Fauna records within the Reserve Y:\Tourism and Partnerships\Recreation Areas\Orara East SF\Bruxner Flora Reserve\FlRWP_Bruxner.docx 1 Bruxner Park Flora Reserve Working Plan 1. Details of the Reserve 1.1 Introduction This plan has been prepared as a supplementary plan under the Nature Conservation Strategy of the Upper North East Ecologically Sustainable Forest Management (ESFM) Plan. It is prepared in accordance with the terms of section 25A (5) of the Forestry Act 1916 with the objective to provide for the future management of that part of Orara East State Forest No 536 set aside as Bruxner Park Flora Reserve No 3. The plan was approved by the Minister for Forests on 16.5.2011 and will be reviewed in 2021. -
Protein Phosphatases 1 and 2A and Their Naturally Occurring Inhibitors: Current Topics in Smooth Muscle Physiology and Chemical Biology
J Physiol Sci (2018) 68:1–17 https://doi.org/10.1007/s12576-017-0556-6 REVIEW Protein phosphatases 1 and 2A and their naturally occurring inhibitors: current topics in smooth muscle physiology and chemical biology 1 2 3 1 Akira Takai • Masumi Eto • Katsuya Hirano • Kosuke Takeya • 4 5 Toshiyuki Wakimoto • Masaru Watanabe Received: 6 January 2017 / Accepted: 27 June 2017 / Published online: 5 July 2017 Ó The Author(s) 2017. This article is an open access publication Abstract Protein phosphatases 1 and 2A (PP1 and PP2A) Keywords Protein phosphorylation Á Protein phosphatase are the most ubiquitous and abundant serine/threonine 1 Á Protein phosphatase 2A Á Smooth muscle Á Phosphatase phosphatases in eukaryotic cells. They play fundamental inhibitors Á Signal transduction roles in the regulation of various cellular functions. This review focuses on recent advances in the functional studies of these enzymes in the field of smooth muscle physiology. Introduction Many naturally occurring protein phosphatase inhibitors with different relative PP1/PP2A affinities have been dis- Protein phosphatases 1 (PP1) and 2A (PP2A) are two of the covered and are widely used as powerful research tools. principal catalytic subunits that dephosphorylate proteins on Current topics in the chemical biology of PP1/PP2A inhi- serine and threonine residues in the cytosol of eukaryotic bitors are introduced and discussed, highlighting the cells. They are encoded by genes belonging to the PPP identification of the gene cluster responsible for the family and are abundantly expressed in all cell types. These biosynthesis of calyculin A in a symbiont microorganism enzymes achieve the substrate specificity and activity reg- of a marine sponge. -
Principles and Practice of Forest Landscape Restoration Case Studies from the Drylands of Latin America Edited by A.C
Principles and Practice of Forest Landscape Restoration Case studies from the drylands of Latin America Edited by A.C. Newton and N. Tejedor About IUCN IUCN, International Union for Conservation of Nature, helps the world find pragmatic solutions to our most pressing environment and development challenges. IUCN works on biodiversity, climate change, energy, human livelihoods and greening the world economy by supporting scientific research, managing field projects all over the world, and bringing governments, NGOs, the UN and companies together to develop policy, laws and best practice. IUCN is the world’s oldest and largest global environmental organization, with more than 1,000 government and NGO members and almost 11,000 volunteer experts in some 160 countries. IUCN’s work is supported by over 1,000 staff in 60 offices and hundreds of partners in public, NGO and private sectors around the world. www.iucn.org Principles and Practice of Forest Landscape Restoration Case studies from the drylands of Latin America Principles and Practice of Forest Landscape Restoration Case studies from the drylands of Latin America Edited by A.C. Newton and N. Tejedor This book is dedicated to the memory of Margarito Sánchez Carrada, a student who worked on the research project described in these pages. The designation of geographical entities in this book, and the presentation of the material, do not imply the expression of any opinion whatsoever on the part of IUCN or the European Commission concerning the legal status of any country, territory, or area, or of its authorities, or concerning the delimitation of its frontiers or boundaries. -
DPR Journal 2016 Corrected Final.Pmd
Bul. Dept. Pl. Res. No. 38 (A Scientific Publication) Government of Nepal Ministry of Forests and Soil Conservation Department of Plant Resources Thapathali, Kathmandu, Nepal 2016 ISSN 1995 - 8579 Bulletin of Department of Plant Resources No. 38 PLANT RESOURCES Government of Nepal Ministry of Forests and Soil Conservation Department of Plant Resources Thapathali, Kathmandu, Nepal 2016 Advisory Board Mr. Rajdev Prasad Yadav Ms. Sushma Upadhyaya Mr. Sanjeev Kumar Rai Managing Editor Sudhita Basukala Editorial Board Prof. Dr. Dharma Raj Dangol Dr. Nirmala Joshi Ms. Keshari Maiya Rajkarnikar Ms. Jyoti Joshi Bhatta Ms. Usha Tandukar Ms. Shiwani Khadgi Mr. Laxman Jha Ms. Ribita Tamrakar No. of Copies: 500 Cover Photo: Hypericum cordifolium and Bistorta milletioides (Dr. Keshab Raj Rajbhandari) Silene helleboriflora (Ganga Datt Bhatt), Potentilla makaluensis (Dr. Hiroshi Ikeda) Date of Publication: April 2016 © All rights reserved Department of Plant Resources (DPR) Thapathali, Kathmandu, Nepal Tel: 977-1-4251160, 4251161, 4268246 E-mail: [email protected] Citation: Name of the author, year of publication. Title of the paper, Bul. Dept. Pl. Res. N. 38, N. of pages, Department of Plant Resources, Kathmandu, Nepal. ISSN: 1995-8579 Published By: Mr. B.K. Khakurel Publicity and Documentation Section Dr. K.R. Bhattarai Department of Plant Resources (DPR), Kathmandu,Ms. N. Nepal. Joshi Dr. M.N. Subedi Reviewers: Dr. Anjana Singh Ms. Jyoti Joshi Bhatt Prof. Dr. Ram Prashad Chaudhary Mr. Baidhya Nath Mahato Dr. Keshab Raj Rajbhandari Ms. Rose Shrestha Dr. Bijaya Pant Dr. Krishna Kumar Shrestha Ms. Shushma Upadhyaya Dr. Bharat Babu Shrestha Dr. Mahesh Kumar Adhikari Dr. Sundar Man Shrestha Dr. -
Price List Aug.2020
MALILIKO Prices are subject to change without notice. ESSENTIAL OILS SD: Steam distilled CP: Cold pressed SE: Solvent extracted Name Botanical name Extract. Part of plant Country Price/5ml Method All Spice Pimenta dioica SD Berry Jamaica 7.00 Angelica seed, organic 10% Angelica archangelica SD Seed England Angelica root, organic 10% Angelica archangelica SD Root France 13.00 Aniseed, wild Pimpinella anisum SD Seed Spain Basil Holy, organic Ocimum sanctum SD Herb India 11.50 Basil Sweet, Linalool, organic Ocimum basilicum SD Herb Egypt 11.00 Bay Laurel Laurus noblis SD Leaf Spain 9.50 Bay Pimenta, wild Pimenta racemosa SD Leaf West Indies 6.50 Benzoin Styrax benzoin SE Resin Sumatra Bergamot, organic Citrus bergamia CP Peel Italy 13.50 Bergamot FCF, organic Citrus bergamia CP Peel Italy 12.00 Bergamot FCF Citrus bergamia CP Peel Italy 9.00 Bergamot mint, wild Mentha citrata SD Herb India 9.50 Birch Sweet, wild Betula lenta SD Bark USA 8.00 Black Pepper Piper nigrum SD Dried fruit India 13.00 Black Pepper, organic Piper nigrum SD Dried fruit Madagascar 11.00 Black Pepper Piper nigrum SD Dried fruit India 7.00 Black Spruce, wild Picea mariana SD Needle Canada 8.00 Cajeput, organic Melaleuca leucadendron SD Leaf Vietnam 6.00 Cajeput Melaleuca leucadendron SD Leaf China 5.00 Camphor White Cinnamomum camphora SD Wood,branch China 5.00 Carrot seed Daucus carota SD Seed France 14.00 Cedar wood Atlas Cedrus atlantica SD Wood Morocco 6.00 Cedar wood Himalayan, wild Cerdrus deodora SD Wood India/Himalaya 5.50 Cedar wood Virginiana, wild Juniperus virginiana SD Wood USA 5.50 Chamomile German, org. -
Gori River Basin Substate BSAP
A BIODIVERSITY LOG AND STRATEGY INPUT DOCUMENT FOR THE GORI RIVER BASIN WESTERN HIMALAYA ECOREGION DISTRICT PITHORAGARH, UTTARANCHAL A SUB-STATE PROCESS UNDER THE NATIONAL BIODIVERSITY STRATEGY AND ACTION PLAN INDIA BY FOUNDATION FOR ECOLOGICAL SECURITY MUNSIARI, DISTRICT PITHORAGARH, UTTARANCHAL 2003 SUBMITTED TO THE MINISTRY OF ENVIRONMENT AND FORESTS GOVERNMENT OF INDIA NEW DELHI CONTENTS FOREWORD ............................................................................................................ 4 The authoring institution. ........................................................................................................... 4 The scope. .................................................................................................................................. 5 A DESCRIPTION OF THE AREA ............................................................................... 9 The landscape............................................................................................................................. 9 The People ............................................................................................................................... 10 THE BIODIVERSITY OF THE GORI RIVER BASIN. ................................................ 15 A brief description of the biodiversity values. ......................................................................... 15 Habitat and community representation in flora. .......................................................................... 15 Species richness and life-form -
Principles and Practice of Forest Landscape Restoration Case Studies from the Drylands of Latin America Edited by A.C
Principles and Practice of Forest Landscape Restoration Case studies from the drylands of Latin America Edited by A.C. Newton and N. Tejedor About IUCN IUCN, International Union for Conservation of Nature, helps the world find pragmatic solutions to our most pressing environment and development challenges. IUCN works on biodiversity, climate change, energy, human livelihoods and greening the world economy by supporting scientific research, managing field projects all over the world, and bringing governments, NGOs, the UN and companies together to develop policy, laws and best practice. IUCN is the world’s oldest and largest global environmental organization, with more than 1,000 government and NGO members and almost 11,000 volunteer experts in some 160 countries. IUCN’s work is supported by over 1,000 staff in 60 offices and hundreds of partners in public, NGO and private sectors around the world. www.iucn.org Principles and Practice of Forest Landscape Restoration Case studies from the drylands of Latin America Principles and Practice of Forest Landscape Restoration Case studies from the drylands of Latin America Edited by A.C. Newton and N. Tejedor This book is dedicated to the memory of Margarito Sánchez Carrada, a student who worked on the research project described in these pages. The designation of geographical entities in this book, and the presentation of the material, do not imply the expression of any opinion whatsoever on the part of IUCN or the European Commission concerning the legal status of any country, territory, or area, or of its authorities, or concerning the delimitation of its frontiers or boundaries. -
Trade-Offs Between Drought Survival and Rooting Strategy of Two South American Mediterranean Tree Species: Implications for Dryland Forests Restoration
Forests 2015, 6, 3733-3747; doi:10.3390/f6103733 OPEN ACCESS forests ISSN 1999-4907 www.mdpi.com/journal/forests Article Trade-Offs between Drought Survival and Rooting Strategy of Two South American Mediterranean Tree Species: Implications for Dryland Forests Restoration Juan F. Ovalle 1, Eduardo C. Arellano 1,2,* and Rosanna Ginocchio 1,2 1 Center of Applied Ecology & Sustainability, Avenida Libertador Bernardo O’Higgins 340, Santiago 8320000, Chile; E-Mails: [email protected] (J.F.O.); [email protected] (R.G.) 2 Departamento de Ecosistemas y Medio Ambiente, Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Santiago 8320000, Chile * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel.: +56-2-2354-1216. Academic Editors: M. Altaf Arain and Eric J. Jokela Received: 18 August 2015 / Accepted: 10 October 2015 / Published: 15 October 2015 Abstract: Differences in water-acquisition strategies of tree root systems can determine the capacity to survive under severe drought. We evaluate the effects of field water shortage on early survival, growth and root morphological variables of two South American Mediterranean tree species with different rooting strategies during two growing seasons. One year-old Quillaja saponaria (deep-rooted) and Cryptocarya alba (shallow-rooted) seedlings were established under two watering treatments (2 L·week−1·plant−1 and no water) in a complete randomized design. Watering improved the final survival of both species, but the increase was only significantly higher for the shallow-rooted species. The survival rates of deep- and shallow-rooted species was 100% and 71% with watering treatment, and 96% and 10% for the unwatered treatment, respectively. -
Chec List What Survived from the PLANAFLORO Project
Check List 10(1): 33–45, 2014 © 2014 Check List and Authors Chec List ISSN 1809-127X (available at www.checklist.org.br) Journal of species lists and distribution What survived from the PLANAFLORO Project: PECIES S Angiosperms of Rondônia State, Brazil OF 1* 2 ISTS L Samuel1 UniCarleialversity of Konstanz, and Narcísio Department C.of Biology, Bigio M842, PLZ 78457, Konstanz, Germany. [email protected] 2 Universidade Federal de Rondônia, Campus José Ribeiro Filho, BR 364, Km 9.5, CEP 76801-059. Porto Velho, RO, Brasil. * Corresponding author. E-mail: Abstract: The Rondônia Natural Resources Management Project (PLANAFLORO) was a strategic program developed in partnership between the Brazilian Government and The World Bank in 1992, with the purpose of stimulating the sustainable development and protection of the Amazon in the state of Rondônia. More than a decade after the PLANAFORO program concluded, the aim of the present work is to recover and share the information from the long-abandoned plant collections made during the project’s ecological-economic zoning phase. Most of the material analyzed was sterile, but the fertile voucher specimens recovered are listed here. The material examined represents 378 species in 234 genera and 76 families of angiosperms. Some 8 genera, 68 species, 3 subspecies and 1 variety are new records for Rondônia State. It is our intention that this information will stimulate future studies and contribute to a better understanding and more effective conservation of the plant diversity in the southwestern Amazon of Brazil. Introduction The PLANAFLORO Project funded botanical expeditions In early 1990, Brazilian Amazon was facing remarkably in different areas of the state to inventory arboreal plants high rates of forest conversion (Laurance et al. -
Annona Muricata L. = Soursop = Sauersack Guanabana, Corosol
Annona muricata L. = Soursop = Sauersack Guanabana, Corosol, Griarola Guanábana Guanábana (Annona muricata) Systematik Einfurchenpollen- Klasse: Zweikeimblättrige (Magnoliopsida) Unterklasse: Magnolienähnliche (Magnoliidae) Ordnung: Magnolienartige (Magnoliales) Familie: Annonengewächse (Annonaceae) Gattung: Annona Art: Guanábana Wissenschaftlicher Name Annona muricata Linnaeus Frucht aufgeschnitten Zweig, Blätter, Blüte und Frucht Guanábana – auch Guyabano oder Corossol genannt – ist eine Baumart, aus der Familie der Annonengewächse (Annonaceae). Im Deutschen wird sie auch Stachelannone oder Sauersack genannt. Inhaltsverzeichnis [Verbergen] 1 Merkmale 2 Verbreitung 3 Nutzen 4 Kulturgeschichte 5 Toxikologie 6 Quellen 7 Literatur 8 Weblinks Merkmale [Bearbeiten] Der Baum ist immergrün und hat eine nur wenig verzweigte Krone. Er wird unter normalen Bedingungen 8–12 Meter hoch. Die Blätter ähneln Lorbeerblättern und sitzen wechselständig an den Zweigen. Die Blüten bestehen aus drei Kelch- und Kronblättern, sind länglich und von grüngelber Farbe. Sie verströmen einen aasartigen Geruch und locken damit Fliegen zur Bestäubung an. Die Frucht des Guanábana ist eigentlich eine große Beere. Sie wird bis zu 40 Zentimeter lang und bis zu 4 Kilogramm schwer. In dem weichen, weißen Fruchtfleisch sitzen große, schwarze (giftige) Samen. Die Fruchthülle ist mit weichen Stacheln besetzt, welche die Überreste des weiblichen Geschlechtsapparates bilden. Die Stacheln haben damit keine Schutzfunktion gegenüber Fraßfeinden. Verbreitung [Bearbeiten] Die Stachelannone -
Endiandric Acid Derivatives and Other Constituents of Plants from the Genera Beilschmiedia and Endiandra (Lauraceae)
Biomolecules 2015, 5, 910-942; doi:10.3390/biom5020910 OPEN ACCESS biomolecules ISSN 2218-273X www.mdpi.com/journal/biomolecules/ Review Endiandric Acid Derivatives and Other Constituents of Plants from the Genera Beilschmiedia and Endiandra (Lauraceae) Bruno Ndjakou Lenta 1,2,*, Jean Rodolphe Chouna 3, Pepin Alango Nkeng-Efouet 3 and Norbert Sewald 2 1 Department of Chemistry, Higher Teacher Training College, University of Yaoundé 1, P.O. Box 47, Yaoundé, Cameroon 2 Organic and Bioorganic Chemistry, Chemistry Department, Bielefeld University, P.O. Box 100131, 33501 Bielefeld, Germany; E-Mail: [email protected] 3 Department of Chemistry, University of Dschang, P.O. Box 67, Dschang, Cameroon; E-Mails:[email protected] (J.R.C.); [email protected] (P.A.N.-E.) * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel.: +2376-7509-7561. Academic Editor: Jürg Bähler Received: 3 March 2015 / Accepted: 6 May 2015 / Published: 14 May 2015 Abstract: Plants of the Lauraceae family are widely used in traditional medicine and are sources of various classes of secondary metabolites. Two genera of this family, Beilschmiedia and Endiandra, have been the subject of numerous investigations over the past decades because of their application in traditional medicine. They are the only source of bioactive endiandric acid derivatives. Noteworthy is that their biosynthesis contains two consecutive non-enzymatic electrocyclic reactions. Several interesting biological activities for this specific class of secondary metabolites and other constituents of the two genera have been reported, including antimicrobial, enzymes inhibitory and cytotoxic properties. This review compiles information on the structures of the compounds described between January 1960 and March 2015, their biological activities and information on endiandric acid biosynthesis, with 104 references being cited.