Enantioselective synthesis of (S)-3,7-dimethyl-2-oxo-6-octene-1,3-diol: a Colorado potato beetle pheromone
摘要:
The recent identification of a male-produced aggregation pheromone [(S)-3,7-dimethyl-2-oxo-6-octene1,3-diol, (S)-CPB] offers a new tool for Colorado potato beetle (CPB) management. We developed a novel synthetic approach to produce CPB pheromone in seven steps and 46.54% overall yield. Grignard reaction, oxidation, and stereoselective methylation using organometallic reagent are the key steps in the commercially viable total synthesis, generating CPB pheromone in 98.6% enantiomeric purity and gram quantity. Published by Elsevier Ltd.
Synthesis of the Major Oxepane Segment of Zoapatanol
作者:Jhillu S. Yadav、Uttam Dash、Nagesh Guguloth、Debendra K. Mohapatra
DOI:10.1002/hlca.201200364
日期:2013.4
A linear synthesis of the major oxepane fragment of zoapatanol, showing the induction of uterine contractions, and cervical dilation and uterine bleeding (by the concentrated zoapatle tea) in early human pregnancy, isolated from the leaves of MexicanzoapatleplantMontanoatomentosa, is described from known intermediate involving Sharpless asymmetric epoxidation, bis‐epoxide opening reaction with