作者:Lifeng Wan、Marcus A. Tius
DOI:10.1021/ol062919e
日期:2007.2.1
The allene ether version of the Nazarov cyclization was used to construct the cyclopentane dione portion of madindolines A and B. The racemic cyclopentane dione from the Nazarov cyclization was converted to an enol ether that was combined with the chiral, nonracemic hydroxyfuroindoline in a Mannich reaction. Deprotection and oxidation led to (+)-madindoline A and (+)-madindoline B. [reaction: see text]
Nazarov环化的烯丙醚版本用于构建马丹多啉A和B的环戊烷二酮部分。将Nazarov环化的外消旋环戊烷二酮转化为烯醇醚,在曼尼希反应中将其与手性,非外消旋的羟基呋喃二氢吲哚结合。脱保护和氧化导致(+)-madindoline A和(+)-madindolineB。[反应:见正文]。