Metabolites of the Fungistatic Agent 2β-Methoxyclovan-9α-ol by Macrophomina phaseolina
作者:Syed Ghulam Musharraf、Asma Najeeb、Rahat Azher Ali、Abida Amir Ali、Muhammad Iqbal Choudhary
DOI:10.1021/jf104314f
日期:2011.4.13
Demethoxylation, regioselective oxidation at C-9 and C-13, and inversion of the configuration at C-9 of compound 1 afforded six oxidative metabolites, 2β-methoxyclovan-9-one (2), clovan-2β,9β-diol (3), clovan-2β,9α-diol (4), clovan-2β,13-diol-9-one (5), 2β-methoxyclovan-9α,13-diol (6), and clovan-2β,9β,13-triol (7). Compounds 5−7 are described here for the first time, and their structures were deduced by
2β-methoxyclovan-9α醇(生物转化1),针对抑真菌剂灰霉病,与进行了研究Macrophomina phaseolina。脱甲氧基化,在C-9和C-13处的区域选择性氧化以及化合物1在C-9处的构型反转提供了六种氧化代谢产物,2β-甲氧基clovan- 9-one(2),clovan-2β,9β-二醇(3),clovan-2β,9α-二醇(4),clovan-2β,13-diol-9-one(5),2β-甲氧基clovan- 9α,13-二醇(6)和clovan-2β,9β,13-三醇(7)。化合物5 - 7本文首次进行了描述,其结构是通过不同的光谱技术推论得出的。新的代谢物的抗真菌活性5 - 7也进行了评价对灰霉病。