Studies on the constituents of asclepiadaceae plants. LXVI The structures of three new glycosides, cynapanosides A, B, and C, from the Chinese drug "Xu-Chang-Qing," Cynanchum paniculatum Kitagawa.

1 January 1986

journal article
research article
Published by Pharmaceutical Society of Japan in CHEMICAL & PHARMACEUTICAL BULLETIN

Vol. 34 (11) , 4500-4507
https://doi.org/10.1248/cpb.34.4500

Abstract

Three new glycosides named cynapanosides A (1), B (2), and C (3) which contain a new aglycone, glaucogenin D (10), were isolated from Cynanchum paniculatum, in addition to the known compounds, cynatratoside B (5) and 3β, 14-dihydroxy-14β-pregn-5-en-20-one (13). Their structures were elucidated by spectroscopic and chemical methods. The results led us to propose a structure revision of glaucogenin B (11).

Keywords

ASCLEPIADACEAE

This publication has 1 reference indexed in Scilit:

Studies on the constituents of Asclepiadaceae plants. LVIII. The structures of five glycosides, cynatratoside-A, -B, -C, -D, and -E, from the Chinese drug "Pai-Wei," Cynanchum atratum BUNGE.
CHEMICAL & PHARMACEUTICAL BULLETIN, 1984