作者:Sadagopan Raghavan、Sheelamanthula Rajendar
DOI:10.1016/j.tetlet.2015.05.089
日期:2015.7
A stereoselective synthesis of the C1-C12 fragment of callystatin A is disclosed. The two stereocenters at C5 and C10 were created by an organocatalytic reaction and a diastereoselective alkylation, respectively. The trisubstituted double bond was introduced by a hydroxy directed hydrostannylation followed by the Negishi reaction. The lactone ring resulted from a ring-closing metathesis reaction. (C) 2015 Elsevier Ltd. All rights reserved.