A Stille cyclisation approach to (−)-periplanone-B: studies in alkene-selective ring-closing metathesis and an improved chromium(II)-mediated synthesis of (E )-alkenylstannanes from aldehydes
A Stille cyclisation approach to (−)-periplanone-B: studies in alkene-selective ring-closing metathesis and an improved chromium(II)-mediated synthesis of (E )-alkenylstannanes from aldehydes
作者:David M. Hodgson、Anne M. Foley、Lee T. Boulton、Peter J. Lovell、Graham N. Maw
DOI:10.1039/a905560f
日期:——
A synthesis of the dienone 7 via an efficient intramolecular Stille cross-coupling reaction, an improved chromium(II)-mediated synthesis of (E)-alkenylstannanes from aldehydes using Bu3SnCHI2 in DMF, and a synthesis of the substituted (â)-dienone 25 via ring-closing alkene metathesis to give dihydropyran 22 are described. The synthesis of (â)-dienone 25 constitutes a formal synthesis of (â)-periplanone-B.