Stryphnosides A-F, six new triterpene glycosides from the pericarps of Stryphnodendron fissuratum |
| |
Authors: | Akihito Yokosuka Sachiko Kawakami Yoshihiro Mimaki |
| |
Affiliation: | a Laboratory of Medicinal Pharmacognosy, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1, Horinouchi, Hachioji, Tokyo 192-0392, Japan b Instituto Biológico, Av. Conselheiro Rodrigues Alves, 1252, CEP 04014-002 São Paulo, SP, Brazil |
| |
Abstract: | Six new triterpene glycosides stryphnosides A-F (1-6) were isolated from the pericarps of Stryphnodendron fissuratum (Leguminosae). The structures of 1-6 were determined on the basis of extensive spectroscopic analysis, including two-dimensional (2D) NMR data, and the results of hydrolytic cleavage. The sugar moieties of 3-6 are very unique in structure having not only novel sugar sequences but also the terminal α-l-arabinopyranosyl unit with a 1C4 conformation. Stryphnosides C (3)-F (6) are the first representative of naturally occurring glycosides with the 1C4 terminal α-l-arabinopyranosyl group. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|