United States Patent [191 [11] Patent Number: 5,696,273 Andre Et A]
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USOO5696273A United States Patent [191 [11] Patent Number: 5,696,273 Andre et a]. [45] Date of Patent: Dec. 9, 1997 [54] METHOD FOR SYNTHESIZING OTHER PUBLICATIONS CUCURBITINE Pn'ce. Pathophysiology. Clinical Concepts of Disease Pro [75] Inventors: Patrice Andre. Neuvilles aux Bois; cess~ 19,36~ PP- 36-37- ‘ _ valérie Thiery_ Clery St Andre; Gémld Webster s New World Dictionary. 1988. p. 36. Guillaumet‘ 01-16mm an of France World Patents Index Latest. AN 87-32998? [47]. Derwent Publications Ltd.. London. GB. & JP. S. 62234013 (Osaka [73] Assignee: Parfums Christian Dior. Paris. France Yak'lhin Kmky) 14 Oct- 1937 Chemical Abstract. vol. 82. No. 23. 1975. p. 40. abstract _ 149446a. Pharmacological (anthelminthic) study of Cucur [21] APPL N°" 476’646 bita. ,A.E. Gonzalez a a1. [22] Filed; Jm 7, 1995 Scienta Sinica. vol. X. No. 7. 1961.T.-T. Sun et a1. “Chemi cal studies on cucurbita moschata duch". pp. 852-859. Related US. Application Data Journal of the Chemical Society. Chemical Communica tions. 1973. H]. Monteiro, “New synthesis of the ami [62] Division of Ser. No. 108,601 , ?led as PCT/FR92/00164 Feb. no-acid (+)-Cucurbitine”. p. 2. 24’ 1992, abandmed- Chemical and Pharmaceutical Bulletin. vol. 35. No. 9. Sep. [30] Foreign. Application. Pl'lol'lty. Data ..'. 5183;135:2149?' t.‘ nzym esandcatalsts.H.Pi y g Feb. 28, 1991 [FR] France ................................. .. 9102420 J. Fable. “Methoden der Organischen Chemie". vol. E5. Georg Thieme Verlag pp. 534-543. (1973). [5 .................... .. C071) 207/36 Derwent Publications Ltd. 52051033AN (Ogawa) 23 Apr.& 1977. [52] US. Cl. 548/531; 548/542; 548/550 world Patents Indcx Latest, 1937‘ AN 37473336 [39]_ [58] Field of Search 5481531. 542, Derwent Publications Ltd. 62087241 (Lion Corp.) 21 Apr. 5481550 1987. World Patents Index Latest. 1987. AN 87-105806 [15]. [56] References Cited Derwent Publications Ltd. 52051033 (Shiseido) 9 Mar. 1987. Us PATENT DOCUMENTS World Patents Index Latest. 1987. AN 97-032891 [05]. Derwent Publications Ltd. 62087241 (Shiseido) 19 Dec. 4,255,418 3/1981 1986 4,511,559 4/1985 4,621,746 11/1986 Primary Examiner-Floyd D. Higel 4,883,659 11/1989 Attorney Agent, or F inn-Sherman and Shalloway 4,942,153 7/1990 4,980,038 12/1990 [57] ABSTRACT 5,039,516 8/1991 5,113,507 6119” The invention relates to the use of cucurbitine or exu'acts of 5,128,139 7/1992 Cucurbitaceae pips for the preparation of a cosmetic or 5,164,182 11/1992 pharmaceutical. in particular dermatological, composition 5,165,935 11/1992 Andre .................................... .. 429/450 having an?a?cfgic activity 01- fol- [hc preparation of C05. metic or pharmaceutical compositions having a reduced risk FOREIGN PATENT DOCUMENTS of being a?crggnic. 2522500 9/1983 France. 2673626 9/1992 France ................................. .. 548/531 7 Claims, 2 Drawing Sheets U.S. Patent Dec. 9, 1997 Sheet 1 of 2 MickaeLis curve Initial rate AA/min 0 132 265 530 nmol histidine without effector ' —---- tritoqualine ----- cucurbitine FIG.1 US. Patent Dec. 9, 1997 Sheet 2 of 2 5,696,273 RIA assay nmol histamine liberated ‘601i I40" I20" I00" 80.. 60- 40‘ - 20 : : 1 5 i ‘ § 10 U \ 2 3 4 5 s 7 time (minutes) without effector —---— tritoqualine --- cucurbitine 5,696,273 1 2 METHOD FOR SYNTHESIZING enabling the allergenic potential of cosmetic or CUCURBITINE pharmaceutical. in particular dermatological. compositions to be decreased. This application is a division of application Ser. No. The object of the present invention is also to solve the new 08/108.601. ?led Sep. 28. 1993. now abandoned; which in technical problem that consists in providing an approach turn entered the National phase based on International enabling the synthesis of cucurbitine to be carried out by a Application PCT/FR92/O0l64 ?led Feb. 24. 1992. simple synthesis process. necessitating a miniruum number The present invention relates essentially to the use of of steps. in good yields. cucurbitine for the preparation of antiallergic cosmetic or The present invention enables all these technical problems pharmaceutical. in particular dermatological, compositions, to be solved simply. reliably and reproducibly of a cosmetic and to a process involving application thereof. 10 or pharmaceutical. in particular dermatological. composition Cucurbitine. or 3-amino-3-pyrrolidinecarboxylic acid. of having antiallergic activity. the following formula I: According to a particular variant of embodiment. the preparation in question is of a cosmetic or pharmaceutical. C OOH (1) in particular dermatological. composition intended for the 15 NH; prevention or symptomatic treatment of allergic manifestations. irrespective of their origin and their point of application, in particular the bronchi. skin and eye. Thus. the N said composition is intended. in particular. for the prevention l H or symptomatic treatment of allergic or exercise-induced bronchial asthma. hay-fever. spasmodic tracheitis and is a natural. water-soluble amino acid found in Cucurbita rhinitis. urticaria. other allergic eruptions. eczema. red ceae (see V. H. Mihranian et al.. LLOYDIA (1968). 31 (1) blotches or skin irritations of allergic pruritus. 23-29). Quincke’s oedema. allergic conjunc?vitis and also allergic Cucurbitine is known as an antiparasitic. especially as an reactions of medicinal anthelrnintic against Schistosoma japonicurn. (Morimoto Y. 25 In the more particular ?eld of cosmetology. the said et al.. Chem. Pharm. Bull. (1987) 35 (9) 3845-3849). Cucurbitine may be obtained by means of extraction in composition is intended advantageously for lines of products laevorotatory form. or synthetically in racemic form. Among which are hypoallergenic or for sensitive or irritable skins. the various methods of synthesis of cucurbitine, special Cucurbitine may be used either in free form. or in the form mention may be made of the synthesis method of H. .l. of one of its cosmetically or pharrnaceutically. in particular Monteiro. J. Chem. Soc.. Chem. Commun. (1973) 2. This dermatologically. acceptable salts or esters. The abovemen method leads to only relatively low yields of racemic tioned salts and esters may be prepared by conventional cucurbitine. Another synthesis method enables the two opti processes which are well known to a person skilled in the art. cal isomers of cucurbitine to be obtained separately. This is Among salts. the mono- and dihydrobromide and the mono the method of Morimoto et al.. Chem. Pharm. Bull. (1987) and dihydrochloride may be mentioned Among esters. the 35 (9) 3845-3849. which is a stereospeci?c enzymatic 35 methyl ester and the ethyl ester may be mentioned. method of synthesis by the use of a pig liver esterase. This According to an advantageous variant. the above method is. however, complicated. and necessitates a rela mentioned plant extract containing cucurbitine is an extract tively large number of steps. of Cucurbitaceae. especially of Cucurbita maxima Duch.. of It has now been discovered. unexpectedly. that cucurb Cucurbita pepo L. or of Cucurbita moschata Duch; itine inhibits the formation of histamine. a well-known preferably. it is an extract of pips or of fruit pulp. As a further mediator of allergies. and hence displays valuable hypohis preference. it is an extract of Cucurbitaceae pips. tarninaemic activity. This hypohistaminaernic activity According to a particular variant. the above-mentioned results from the inhibitory action of cucurbitine on histidine plant extract is an extract of Cucurbitaceae fruit pulp con decarboxylase. which is the enzyme responsible for the taining at least 0.5% by weight of curcubitine. conversion of histidine to histamine. As a result. the admin 45 According to an advantageous variant of embodiment. istration of cucurbitine contributes to decreasing the hista cucurbitine or one of its cosmetically or pharrnaceutically. in mine concentration in the blood serum and tissues. particular derrnatologically. acceptable salts or esters is This constitutes a considerable technical advance. since present at a concentration of 0.001% to 10%. and preferably allergic manifestations. in particular pulmonary and cutane 0.01 to 5%. by weight of the total composition. ous allergies. are nowadays causing many problems for 50 According to a second aspect. the present invention also therapists. who have a limited number of active substances relates to a cosmetic composition. characterized in that it at their disposal and. in addition. some of these substances comprises. as active ingredient. cucurbitine or one of its can display side-effects. Thus. a considerable need conse cosmetically acceptable salts or esters. or a plant extract quently exists for the development of a new preventive and containing it. where appropriate in a cosmetically acceptable curative composition for allergies. $5 excipient. vehicle or carrier. Thus. the main objective of the present invention is to According to an advantageous variant. the above solve the technical problem that consists in providing an mentioned plant extract is an extract of Cucurbitaceae as approach enabling the formation of histamine. a mediating de?ned above. agent in the context of allergic manifestations. to be inhib According to a preferred variant of embodiment. cucur ited in order to enable allergic manifestations to be pre bitine or one of its salts or esters is present in an amount vented and treated. which is effective for displaying antiallergic activity. espe According to another aspect. the main objective of the cially at a concentration of 0.001% to 10%. and preferably