鲁贝辛I和J，从红果米仔兰（楝科）茎皮中提取的进一步柠檬苦素衍生物。

Rubescins I and J, further limonoid derivatives from the stem bark of Trichilia rubescens (Meliaceae).

作者信息

Tsamo Armelle Tontsa, Melong Raduis, Mkounga Pierre, Nkengfack Augustin Ephrem

机构信息

a Faculty of Science, Department of Organic Chemistry , University of Yaounde I , Yaounde , Cameroon.

b Faculty of Science, Department of Chemistry , Tshwane University of Technology , Pretoria , South Africa.

出版信息

Nat Prod Res. 2019 Jan;33(2):196-203. doi: 10.1080/14786419.2018.1443087. Epub 2018 Mar 3.

DOI:10.1080/14786419.2018.1443087

PMID:29502449

Abstract

Two new tetranorterpenoid derivatives named rubescins I (1) and J (2), were isolated along with six known compounds including rubescin D (3), lichexanthone (4), scopoletin (5), scopoletin O-glycoside (6), β-sitosterol (7) and stigmasterol (8) from the stem bark of Trichilia rubescens (Meliaceae). The structures of the compounds were determined by means of MS, different NMR and by comparison with related data reported in the literature.

摘要

从楝科米仔兰属植物红果米仔兰的茎皮中分离得到了两种新的四降三萜衍生物，分别命名为红果米仔兰素I（1）和J（2），同时还得到了六种已知化合物，包括红果米仔兰素D（3）、地衣黄酮（4）、东莨菪素（5）、东莨菪素O-糖苷（6）、β-谷甾醇（7）和豆甾醇（8）。通过质谱、不同的核磁共振技术并与文献报道的相关数据进行比较，确定了这些化合物的结构。