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Introduction. Chuanliansu(1), C_(30)H_(38)O_(11)·3H_2O, isolated from the bark of Melia toosendan S. et Z., is an active anthelimintic against ascaris (Chung, 1975; Shu, 1980). In the course-of our systematic investigation on the relationship between the structure and biological activity of its analogues (Ochi, 1976; Arnoux, 1980), we have undertaken an X-ray structural, determination of the title compound. The’molecule belongs to the triterpene group with a furan ring and a hemiacetai bridge between C(19) and C(28). Its colorless crystals have been obtained by slow evaporation of an alcohol-water solution.
Chuanliansu (1), C_ (30) H_ (38) O_ (11) · 3H_2O, isolated from the bark of Melia toosendan S. et Z., an an active anthelimintic against ascaris (Chung, 1975; Shu, 1980) . In the course-of our systematic investigation on the relationship between the structure and biological activity of its analogues (Ochi, 1976; Arnoux, 1980), we have undertaken an X-ray structural, determination of the title compound. The’molecule belongs to the triterpene group with a furan ring and a hemiacetai bridge between C (19) and C (28). Its colorless crystals have been obtained by slow evaporation of an alcohol-water solution.