Stereoselective total synthesis of the (Z)-isomer of a novel phytotoxic nonenolide from Phomopsis sp. HCCB03520 and its C-6 epimer
作者:Cheruku Ravindra Reddy、Biswanath Das
DOI:10.1016/j.tetlet.2013.10.114
日期:2014.1
The (Z)-isomer of a phytotoxic nonenolide, (6S,7R,9R)-6,7-dihydroxy-9-propylnon-4-eno-9-lactone isolated from Phomopsis sp. HCCB03520 and its C-6 epimer have been synthesized through a common route starting from butyraldehyde. The synthesis involves enantioselective Maruoka allylation, Sharpless asymmetric epoxidation and intramolecular ring closing metathesis as the important steps.
植物毒性壬烯内酯的(Z)-异构体,(6 S,7 R,9 R)-6,7-二羟基-9-丙基非-4-eno-9-内酯,从Phomopsis sp。分离得到。HCCB03520及其C-6差向异构体是从丁醛开始的常规路线合成的。合成过程涉及对映选择性Maruoka烯丙基化,Sharpless不对称环氧化和分子内闭环复分解等重要步骤。