Total synthesis of a second generation HIV protease inhibitor
摘要:
An efficient stereoselective preparation of HIV protease inhibitor (+)-1 was synthesized on multi-kilogram scale in 16 steps without the use of chromatography. The key steps include the diastereoselective alkylation of acetal 3, a diastereoselective iodo-hydroxylation to generate epoxide 6, and a reductive amination in the final coupling step that averts a non-productive Cyclic aminal intermediate. (C) 2003 Elsevier Ltd. All rights reserved.