NOVEL PROCESSES FOR THE PREPARATION OF SUBSTITUTED PROPENONE DERIVATIVES
申请人:SHIONOGI & CO., LTD.
公开号:EP1186599A1
公开(公告)日:2002-03-13
The present invention provides industrial and commercial processes for the preparation of 2-acyl-5-benzylfuran derivatives, 1,2,4-triazole-3-carboxylic acid ester derivatives and propenone derivatives having anti-HIV activities and usuful crystals thereof.
wherein R1, R2 and R4 each is independently hydrogen or the like; A is CR6 or N; R6 is hydrogen or the like; Q is a protecting group; and L is a leaving group.