Studies on coumarins from the root of Angelica pubescens Maxim. IV. Structures of angelol-type prenylcoumarins.
作者:KIMIYE BABA、YOUKO MATSUYAMA、MITSUGI KOZAWA
DOI:10.1248/cpb.30.2025
日期:——
The root of Angelica pubescens MAXIM. (Umbelliferae) afforded seven new coumarins, angelols B-H (2-8), together with a known coumarin, angelol A (formerly simply called angelol). The structures of these coumarins were determined on the basis of spectral and chemical evidence as 6-(1-acyloxy-2, 3-dihydroxy-3-methylbutyl)-7-methoxycoumarins and 6-(2-acyloxy-1, 3-dihydroxy-3-methylbutyl)-7-methoxycoumarins and 6-(2-acyloxy-1, 3-dihydroxy-3-methylbutyl)-7-methoxycoumarins. Furthermore, in the course of this investigation we revised the reported structure of angelol A (1)
毛当归的根。 (伞形科)提供了七种新的香豆素,当归醇 B-H (2-8),以及一种已知的香豆素,当归醇 A(以前简称为当归醇)。这些香豆素的结构根据光谱和化学证据确定为 6-(1-酰氧基-2, 3-二羟基-3-甲基丁基)-7-甲氧基香豆素和 6-(2-酰氧基-1, 3-二羟基) -3-甲基丁基)-7-甲氧基香豆素和6-(2-酰氧基-1,3-二羟基-3-甲基丁基)-7-甲氧基香豆素。此外,在本研究过程中,我们修改了报道的当归醇 A 的结构 (1)