钝叶桤叶树叶片中桤叶树宁A - C的结构

Structures of ryobunins A-C from the leaves of Clethra barbinervis.

作者信息

Sugimoto Sachiko, Matsunami Katsuyoshi, Otsuka Hideaki

机构信息

Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan.

出版信息

Chem Pharm Bull (Tokyo). 2013;61(5):581-6. doi: 10.1248/cpb.c12-01098.

DOI:10.1248/cpb.c12-01098

PMID:23649201

Abstract

From a MeOH extract of the leaves of Clethra barbinervis Sieb. et Zucc., ryobunins A-C, three new triterpene glucosides, i.e. one ursane, one seco-ursane and one oleanane-type glucoside, along with four known compounds were isolated. Their structures were elucidated based on chemical and spectral evidence.

摘要

从毛叶桤木叶的甲醇提取物中，分离得到了ryobunins A - C这三种新的三萜糖苷，即一种乌苏烷型、一种裂环乌苏烷型和一种齐墩果烷型糖苷，以及四种已知化合物。基于化学和光谱证据阐明了它们的结构。