布拉楚因 A 和 B，一种来自. 的新的三萜内酯。

Brahucins A and B, new triterpene lactones from .

机构信息

Department of Applied Chemistry, University of Karachi, Karachi 75270, Pakistan.

International Centre for Chemical and Biological Sciences, HEJ Research Institute of Chemistry, University of Karachi, Karachi 75270, Pakistan.

出版信息

J Asian Nat Prod Res. 2021 Nov;23(11):1037-1042. doi: 10.1080/10286020.2020.1839431. Epub 2020 Dec 14.

DOI:10.1080/10286020.2020.1839431

PMID:33307789

Abstract

Brahucins A () and B (), the new oleanane-type triterpene lactones, have been isolated from the EtOAc-soluble fraction of Boiss, along with betulinic acid (), oleanolic acid (), 3--(-D-glucopyranosyl) oleanolic acid (), vanillic acid () and caffeic acid (), reported for the first time from this species. The structures of these compounds were elucidated by spectroscopic studies including MS, IR, 1D and 2D NMR.

摘要

Brahucins A()和 B()是从 Boiss 的 EtOAc 可溶部分中分离得到的新的齐墩果烷型三萜内酯，此外还分离得到了白桦脂酸()、齐墩果酸()、3--(-D-吡喃葡萄糖基)齐墩果酸()、香草酸()和咖啡酸()，这些化合物均为该种首次报道。通过包括 MS、IR、1D 和 2D NMR 在内的光谱研究阐明了这些化合物的结构。