acid-catalyzed reductive α-alkylation of β-aminothiophenes was applied to the N-(thien-3-yl)acetamide and alkyl N-(thien-3-yl)carbamates. Without reduction, β-amino α-vinylthiophenes were obtained when α-branched aldehydes were used. β-(3-Aminothien-2-yl)α,β-unsaturatedketones, esters and nitriles were also prepared from the corresponding α-functionalized acetals. These amines are intermediates in the formation
Thienopyridine sulfonamides and their ophthalmological formulation
申请人:Merck & Co., Inc.
公开号:US04731368A1
公开(公告)日:1988-03-15
Thienopyridine sulfonamides are carbonic anhydrase inhibitors useful in the treatment of elevated intraocular pressure and disorders associated therewith such as glaucoma.
Biomimetic reduction with non water-sensivive NADH models
作者:J Cazin、G Dupas、J Bourguignon、G Quéguiner
DOI:10.1016/s0040-4039(00)84533-5
日期:——
Two NADHmodels were synthesized which are considerably less water-sensitive than classical-1,4 dihydronicotinamide derivatives such as N-benzyl-1,4 dihydronicotinamide (BNAH): these two models are reactive and more stable in the presence of water than previously reported models.