作者:Masataka Moriyasu、Noriyoshi Nakatani、Momoyo Ichimaru、Yumi Nishiyama、Atsushi Kato、Simon G. Mathenge、Francis D. Juma、Patrick B. Chalo Mutiso
DOI:10.1007/s11418-010-0498-2
日期:2011.4
A chemical investigation of the chloroform extract of the roots of Uvaria welwitschii (Annonaceae), an African traditional medicine taken for stomach ache, led to the isolation of eight new compounds, named welwitschins A–H (1–8), together with five known compounds (9–13). The structural elucidation by spectroscopic studies of the compounds isolated is described. All new compounds were flavonoids having a 2-hydroxy-3,4,6-trimethoxyphenyl moiety in the A-ring, and unsubstituted phenyl in the B-ring. Four of them (1–4) were monomeric flavonoids while the others (5–8) were dimeric flavonoids. The cytotoxicity of the isolated compounds against human promyelocytic leukemia HL-60 cells was investigated.
Uvaria welwitschii(Annonaceae)是一种治疗胃痛的非洲传统药物,通过对其根部氯仿提取物进行化学研究,分离出了 8 种新化合物,命名为 welwitschins A-H (1-8),以及 5 种已知化合物 (9-13)。本文介绍了通过光谱研究对分离出的化合物进行结构阐释的情况。所有新化合物均为黄酮类化合物,其 A 环为 2-羟基-3,4,6-三甲氧基苯基,B 环为未取代的苯基。其中四种(1-4)为单体类黄酮,其他(5-8)为二聚体类黄酮。研究了分离出的化合物对人类早幼粒细胞白血病 HL-60 细胞的细胞毒性。