The total synthesis and an unambiguous structure confirmation of stevastelin B 1, a novel 15-membered cyclic depsipeptide, are described; the fatty acid moiety in 1, prepared stereoselectively from L-quebrachitol was converted into the amino carboxylic acid, whose macrolactamization by Shioiriâs procedure effectively constructed the cyclic structure of 1.
关于新颖的15元环状缩肽stevastelin B 1的全程合成及其明确结构确认的描述如下:通过从L-白梨醇选择性制备的
脂肪酸部分,转化为
氨基酸羧酸,按照Shioiri的程序进行大环内酰胺化,有效地构建了1的环状结构。