Abstract A short and efficient enantio- and diastereoselectivesynthesis of different representatives from the class of dihydro-α-pyrone natural products, including both enantiomers of goniothalamin, massoia lactone, parasorbic acid, and some derivatives is presented. It is based on the application of enantiopure α-chiral allylboronic esters in allyl additions. A short and efficient enantio- and diastereoselective
作者:Debendra K. Mohapatra、Gonela Umamaheshwar、M. Mallikarjuna Rao、Deivasigamani Umadevi、Jhillu S. Yadav
DOI:10.1039/c3ra44478c
日期:——
efficient total synthesis of botryolide B was achieved in 9 longest linear steps with 22% overall yield via esterification of a carboxylic acid with an alcohol fragment and a ringclosingmetathesis (RCM) reaction as pivotal steps to construct the macrolactonering system. Our novel approach for the synthesis of the 2-alkene-1,5-diol fragment was achieved by a ringclosingmetathesis reaction followed