Studies Directed Towards the Total Synthesis of (-)-Dictyostatin
作者:Jhillu S. Yadav、Vemula Rajender
DOI:10.1002/ejoc.200901448
日期:2010.4
The stereoselective synthesis of the three major fragments (C1-C9, C10-C17, and C19-C26) of an antimitotic marinemacrolide, (-)-dictyostatin, has been achieved with a desymmetrization strategy and Oppolzer syn and anti aldol protocols as the key reactions. Takai olefination and Sonogashira coupling reactions were successfully utilized to establish the 2Z,4E-dienoate portion of the C1-C9 fragment and
Studies directed towards the total synthesis of narbonolide: stereoselective synthesis of the C1–C15 chain
作者:Jhillu S. Yadav、Aala Kavita、Kovvuri V. Raghavendra Rao、Debendra K. Mohapatra
DOI:10.1016/j.tetlet.2013.04.023
日期:2013.6
A stereoselectivesynthesis of the C1–C15 chain of narbonolide, a 14-membered macrolactone belonging to the pikromycin family of antibiotics is described. The key steps involved in this synthesis are desymmetrization of bicyclic olefin with Brown’s asymmetric hydroboration, Evans aldol reaction, Takai olefination and Yamaguchi esterification to yield the corresponding ester.