One-pot hydrosilylation–protodesilylation of functionalized diarylalkynes: a highly selective access to Z-stilbenes. Application to the synthesis of combretastatin A-4
作者:Anne Giraud、Olivier Provot、Abdallah Hamzé、Jean-Daniel Brion、Mouâd Alami
DOI:10.1016/j.tetlet.2007.12.057
日期:2008.2
An efficient stereoselective synthesis of Z-stilbenes has been developed from diarylalkynes via a new hydrosilylation-protodesilylation process. The scope and limitation of this method is presented to stereo selectively prepare a wide range of (Z)-stilbenes in a one-pot way is presented. A concise application to the preparation of combretastatin A-4 (CA-4), a vascular targeting agent inhibitor of tubulin polymerisation is described. (C) 2007 Elsevier Ltd. All rights reserved.