1977 Volume 25 Issue 1 Pages 163-165
Three kinds of pregnane derivatives G5, G6, and G7 were isolated from the aerial parts of Dioscorea tenuipes FRANCH. et SAVAT. They were characterized as 2β, 3α, 4β-trihydroxy-5β-pregn-16-en-20-one (IV) and its 2-(VII) and 4-monoacetates (VIII), respectively, which are corresponding to coexisting diotigenin (I) and its monoacetates (II and III).