Chiral acetylenic sulfoxide in alkaloid synthesis. Total synthesis of (R)-(+)-carnegine.
作者:Albert W. Lee、W.H. Chan、Yu-Kai Lee
DOI:10.1016/0040-4039(91)80426-7
日期:1991.11
Remarkable diastereoselectivity was observed in the cyclization of β-aminovinyl sulfoxide 5a prepared from chiralacetylenicsulfoxide 1a in acidic medium. The cyclized product 6a was then converted to (R)-(+)-carnegine.