Marinisporolides, Polyene-Polyol Macrolides from a Marine Actinomycete of the New Genus <i>Marinispora</i>
作者:Hak Cheol Kwon、Christopher A. Kauffman、Paul R. Jensen、William Fenical
DOI:10.1021/jo801944d
日期:2009.1.16
Two new polyene macrolides, marinisporolides A and B (1, 2), were isolated from the saline culture of the marine actinomycete, strain CNQ-140, identified as a member of the new marine genus Marinispora. The marinisporolides are 34-membered macrolides composed of a conjugated pentaene and several pairs of 1,3-dihydroxyl functionalities. Marinisporolide A (1) contains a bicyclic spiro-bis-tetrahydropyran
从海洋放线菌 CNQ-140 菌株的盐水培养物中分离出两种新的多烯大环内酯类,marinisporolides A 和 B ( 1 , 2 ),该菌株被鉴定为新海洋属Marinispora的成员。marinisporolides 是由共轭戊烯和几对 1,3-二羟基官能团组成的 34 元大环内酯。Marinisporolide A ( 1 ) 包含双环螺双-四氢吡喃缩酮官能团,而 marinisporolide B ( 2 ) 是相应的半缩酮。这些新化合物的结构通过组合光谱和化学方法确定,包括广泛的 2D NMR 实验和13来自 Kishi 的通用核磁共振数据库的 C 核磁共振数据。化学修饰,包括甲醇分解、丙酮化物形成和改进的 Mosher 方法的应用,提供了这些分子的完整立体结构。三个额外的大环内酯类,marinisporolides CE ( 3-5 ),它们是 marinisporolide