Synthesis and Antifungal Activity of Novel 14-Membered Benzomacrolides, as Galbonolide Analogues
作者:Hiroki Sakoh、Shunji Sakuraba、Yuichi Sugimoto、Hideaki Imamura、Hideki Jona、Koji Yamada、Rie Bamba-Nagano、Terutaka Hashizume、Hajime Morishima
DOI:10.1248/cpb.52.163
日期:——
Asymmetric total synthesis of benzene analogues of galbonolide, a 14-membered antifungal macrolide, possessing a benzene ring instead of a conjugated diene structure, was achieved starting from chiral 1-aryl-1-propanol obtained by enzyme-catalyzed kinetic resolution with high enantioselectivity. Representatively, a method for the introduction of a methylthio and chloride function at the vinyl position was also established. The resulting analogues unfortunately exhibited very little antifungal potency in comparison with galbonolide A.
从通过酶催化动力学解析获得的手性 1- 芳基-1-丙醇开始,实现了具有苯环而非共轭二烯结构的 14 元抗真菌大环内酯 galbonolide 的苯类似物的不对称全合成,对映选择性极高。具有代表性的是,还建立了在乙烯基位置引入甲硫基和氯基功能的方法。遗憾的是,与加苯内酯 A 相比,所得到的类似物的抗真菌效力很低。