STUDIES ON THE CONSTITUENTS OFERYCIBE ELLIPTLLIMBA

Five compounds have been isolated from the stem of Erycibe elliptilimba Merr. et Chun. By spectral analyses and chemical reactions four of them have been identified as scopoletin(Ⅰ), scopolin(Ⅱ), Bao-Gong-Teng A(Ⅲ),and Bao-Gong-Teng C(Ⅳ). (Ⅰ) and (Ⅱ) can be used as antirheumatic and analgesic; while (Ⅲ) can be used as myotic. The fifth one, 2β, 7β-dihydroxynortropane, is a new alkaloid named erycibelline(Ⅴ). Forthe first time (Ⅳ)is obtained as a pure colorless oil. It has been found that although (Ⅳ) Showed no obvious biologic activity, its O-diacetyl derivative (Ⅳa) is a strong myotic.