The Structures of Two Diosgenin Glycosides Isolated from the Subterranean Parts of Allium fistuiosum

파 지하부로부터 분리된 2종의 Diosgenin 배당체의 구조

The structures of dioscin(1) and saponin P-d(2), isolated from the subterranean part of Allium fistulosum, were determined as diosgenin 3-O-$\alpha$-L-rhamnopyranosyl (1longrightarrow2)-[$\alpha$-L-rhamnopyranosyl (1longrightarrow4)]-$\beta$-D-glucopyranoside (1, ) and diosgenin 3-O-$\alpha$-L-rhamnopyranosyl (1longrightarrow4)-$\alpha$-L-rhamnopyranosyl(1longrightarrow4)［$\alpha$-L-rhamno-pyranosyl (1longrightarrow2)]-$\beta$-D-glucopyranoside (2) by spectroscopic and chemical degradational methods. The prosa-pogenin(4), which was provided on partial hydrolysis of 2, was not reported in previous literature.

파 지하부로부터 분리된 2종의 diosgenin 배당체의 구조를 그의 분광학적 data와 화학적 실험 등의 방법으로 결정하였다. 그 결과, 이 두화합물의 구조는 diosgenin 3-O-$\alpha$-L-rhamnopyranosyl (1$\longrightarrow$2)-[$\alpha$-L-rhamnopyranosyl (1$\longrightarrow$4)]-$\beta$-D-glucopyranoside (1, dioscin)과 diosgenin 3-O-$\alpha$-L-rhamnopyranosyl (1$\longrightarrow$4)-$\alpha$-L-rhamnopyranosyl (1$\longrightarrow$4)]- [$\alpha$-L-rhamnopyranosyl (1$\longrightarrow$2]-$\beta$-D-glucopyranoside (2, saponin P-d)로서 기지 물질이나, saponin P-d를 부분가수분해하여 얻은 prosapogenin 중 compound 4는 문헌 미기재의 물질이다.