A Convergent Synthesis of a Twelve-Membered Macrolide Natural Product, (6R,12S)-6-Hydroxy-12-methyl-1-oxacyclododecane-2,5-dione
作者:Palakodety Radha Krishna、Pendyala Venkata Arun Kumar
DOI:10.1002/hlca.201200064
日期:2012.9
A new polyketide metabolite, the twelve‐membered macrolide 1, isolated from the endophytic fungal strain Cladosporium tenuissimum LR 463 of Maytenus hookeri, whose structure had been determined as (6R,12S)‐6‐hydroxy‐12‐methyl‐1‐oxacyclododecane‐2,5‐dione, was synthesized for the first time by a convergent strategy via Yamaguchi esterification of 2 with 3 and ring‐closing metathesis (RCM) to afford
一种新的聚酮化合物代谢物,即十二元大环内酯1,从Maytenus hookeri的内生真菌菌株Cladosporium tenuissimum LR 463中分离出来,其结构被确定为(6 R,12 S)‐6‐羟基‐12‐甲基‐1‐ oxacyclododecane -2,5-二酮,是首次由会聚策略合成经由山口的酯化2与3和闭环复分解(RCM)反应,得到环酯1这是最终转化为目标分子。然而,总的合成表明天然产物的指定结构是不正确的。