来自埃及三叶草种子的化学成分。

Chemical constituents from the seeds of Trifolium alexandrinum.

作者信息

Sharaf M

机构信息

Department of Phytochemistry and Plant Systematics, National Research Centre, Cairo, Egypt.

出版信息

Nat Prod Res. 2008 Dec;22(18):1620-3. doi: 10.1080/14786410701869226.

DOI:10.1080/14786410701869226

PMID:19085418

Abstract

The ethanolic extract of the seeds of Trifolium alexandrinum afforded a new naturally occurring compound identified as methyl-alpha-glucose. The known compounds quercetin, kaempferol, apigenin 7-O-beta-D-glucoside and the nucleoside xanthosine were also isolated. The isolated compounds were identified by spectroscopic (UV, (1)H-, (13)C-NMR, DEPT, HMQC and HMBC) and spectrometric (ESI-MS/MS) analyses. The spectroscopic data of the isolated nucleoside were reported for the first time as a natural isolate.

摘要

埃及三叶草种子的乙醇提取物得到了一种新的天然化合物，鉴定为甲基-α-葡萄糖。还分离出了已知化合物槲皮素、山奈酚、芹菜素7-O-β-D-葡萄糖苷和核苷黄嘌呤核苷。通过光谱分析（紫外、¹H-、¹³C-核磁共振、DEPT、HMQC和HMBC）和质谱分析（电喷雾串联质谱）对分离出的化合物进行了鉴定。首次报道了分离出的核苷作为天然分离物的光谱数据。