作者:Yanping Chen、Celine Gambs、Yoshito Abe、Paul Wentworth,、Kim D. Janda
DOI:10.1021/jo034765b
日期:2003.11.1
The first total synthesis of FR-901375, a novel bicyclic depsipeptide isolated from the fermentation broth of Pseudomonas chloroaphis No. 2522, has been achieved. The synthetic approach involves 13 reaction steps and is achieved in 12% overall yield. The key points in the successful synthetic strategy are a concise asymmetric synthesis of the key building block (3R,4E)-3-hydroxy-7-mercapto-4-heptenoic
已经实现了FR-901375的首次全合成,这是一种从绿假单胞菌第2522号发酵液中分离出的新型双环二肽。合成方法涉及13个反应步骤,总产率为12%。成功的合成策略中的关键点是关键结构单元(3R,4E)-3-羟基-7-巯基-4-庚烯酸的简明不对称合成,温和的Mitsunobu宏观内酯化步骤以及I(2)-介导的脱保护作用,同时形成二硫键。