专利号:US-5470973-A 优先权日:1994-10-03 标 题 :Synthesis of sulfonamide intermediates 发明人:HOFF ROMAN 权利人:ALCON LAB INC 摘要:Enantioselective syntheses of (S)-6-chloro-3,4-dihydro-2-(3-methoxypropyl)-2H-thieno[3,2-e]-1,2-thiazin-4-ol 1,1-dioxide and related compounds are described.
专利号:WO-9610573-A1 优先权日:1994-10-03 标 题:Enantioselective synthesis of sulfonamide intermediates
专利号:US-8344136-B2 优先权日:2008-06-16 标题:Process for the preparation of brinzolamide 发明人:FALCHI ALESSANDRO; DE LUCCHI OTTORINO; CASTELLIN ANDREA 权利人:PHF S A; FALCHI ALESSANDRO; DE LUCCHI OTTORINO; CASTELLIN ANDREA 摘要:The present invention relates to a process for the preparation of Brinzolamide, or 2H-thieno[3,2-e]-1,2-thiazin-6-sulfonamide, 4-(ethyl amino)-3,4-dihydro-2-(3-methoxypropyl)-, 1,1-dioxide, (4R)-via intermediates 2,3-dihydro-4H-thieno[3,2-e]-1,2-thiazin-4-ones, 1,1-dioxide. Further objects of the present invention are the intermediates mentioned above and other intermediates of the synthesis.