Mechanistic studies on the diastereoselective halohydroxylation of γ-δ unsaturated carboxamides
摘要:
Evidence is presented that the diastereoselective iodohydroxylation of the the gamma-delta unsaturated amide 2 proceeds without involvement of iminium ion 12 directly to the tetrahedral intermediate 17 and its subsequent endocyclic cleavage to 3. Copyright (C) 1996 Elsevier Science Ltd
Highly diastereoselective reaction of a chiral, non-racemic amide enolate with (S)-glycidyl tosylate. Synthesis of the orally active HIV-1 protease inhibitor L-735,524
作者:David Askin、Kan K Eng、Kai Rossen、Robert M Purick、Kenneth M Wells、R.P Volante、Paul J Reider
DOI:10.1016/s0040-4039(00)75787-x
日期:1994.1
Reaction of chiral amideenolate Li-1 with (S)-glycidyl tosylate 11 affords the epoxide 3 in 72% yield with high diastereoselectivity. Epoxide 3 is converted to the orally-active HIV-1 protease inhibitor L-735,524 in 71% isolated yield.