Seto,H. et al., Chemical and pharmaceutical bulletin, 1976, vol. 24, p. 1552 - 1554
作者:Seto,H. et al.
DOI:——
日期:——
Constituents of asclepiadaceae plants. XXXIII. Component of Marsdenia tomentosa Decne. Structure of tomentosin.
作者:HIDEO SETO、KOJI HAYASHI、HIROSHI MITSUHASHI
DOI:10.1248/cpb.23.1552
日期:——
A new polyoxypregnane derivative, tomentosin (12β-O-tigloyl-20-O-acetyl-tomentogenin) was isolated from the stem of Marsdenia tomentosa. Tomentosin is the first example of the diester possessing a tomentogenin skeleton to be isolated from the Asclepiadaceae plant, and it did not undergo any internal acyl migration which occurrs on mild alkaline hydrolysis of C-12β, 20-diester of sarcostin and other polyoxypregnane derivatives.