Talosins A and B: New Isoflavonol Glycosides with Potent Antifungal Activity from Kitasatospora kifunensis MJM341
作者:Won-Gon Kim、Tae Mi Yoon、Hyung Jin Kwon、Joo Won Suh
DOI:10.1038/ja.2006.85
日期:2006.10
In our screening program for new antifungal agents from microbial secondary metabolites, two new isoflavonol glycosides with potent antifungal activity, talosins A and B, were isolated from the culture broth of Kitasatospora kifunensis MJM341. Talosins A and B were determined to be genistein 7-α-L-6-deoxy-talopyranoside and genistein 4â²,7-di-α-L-6-deoxy-talopyranoside, respectively, by spectroscopic studies. They are the first flavonoid glycosides incorporating 6-deoxy-talose as a sugar component.
在从微生物次生代谢产物中筛选新型抗真菌剂的过程中,我们从 Kitasatospora kifunensis MJM341 的培养液中分离出了两种具有强效抗真菌活性的新型异黄酮醇苷--塔罗素 A 和 B。通过光谱研究,塔罗素 A 和 B 分别被确定为染料木素 7-δ±-L-6- 脱氧吡喃塔罗苷和染料木素 4â²,7-二δ±-L-6-脱氧吡喃塔罗苷。它们是首个以 6-脱氧塔罗糖作为糖成分的黄酮苷类化合物。