Flavones and New Isoflavone Derivatives from Microorganisms: Isolation and Structure Elucidation
作者:Rajendra P. Maskey、Ratnakar N. Asolkar、Michael Speitling、Volker Hoffman、Iris Grün-Wollny、Werner F. Fleck、Hartmut Laatsch
DOI:10.1515/znb-2003-0713
日期:2003.7.1
GW39/1530) were known only from plant sources. Additionally, three new isoflavonoids were obtained, namely 4',7-bis-(β-cymaropyranosyl)-genistein (le) and 4'-hydroxy-6,7-methoxyisoflavone (2c) from the actinomycete isolate HKI 129-L, and genistein-4'-(6"-methyl)-salicylate (1d) from Streptomyces sp. isolate GW27/2506. 1d is the first natural 4'-ester of an isoflavonoid and an aromatic acid. For the
在我们对来自陆地和海洋来源的放线菌和其他细菌进行化学筛选的过程中,一些提取物显示出无色的中极带,在 254 nm 处具有强紫外线吸收,并且与茴香醛/硫酸呈棕色至灰色。对这些菌株的处理导致了许多异黄酮的分离。Daidzein (la) 和染料木素 (1b) 非常广泛,但是,像 kakkatin (2b, Streptomyces sp. GW39/1530) 这样的化合物仅从植物来源中得知。此外,从放线菌分离株 HKI 129-L 中获得了三种新的异黄酮,即 4',7-双-(β-cymaropyranosyl)-染料木黄酮 (le) 和 4'-羟基-6,7-甲氧基异黄酮 (2c),和来自链霉菌属分离株 GW27/2506 的 genistein-4'-(6"-methyl)-salicylate (1d)。1d 是第一个天然的 4' -异黄酮和芳香酸的酯。首次从细菌中分离出两种黄酮类化合物,芹菜素