Synthesis of 2-Acyl substituted chromanes and intermediates thereof
申请人:——
公开号:US20030233002A1
公开(公告)日:2003-12-18
Novel processes for producing enantiomerically enriched and enantiomerically pure compositions of 2-acyl substituted chromane compounds, and 2-acylchromane compounds that are intermediates for producing platelet aggregation inhibitors and/or are themselves potent platelet aggregation inhibitors are disclosed. Further disclosed are processes for producing salts such as acid addition salts for such enantiomerically enriched compositions.
PROCESS FOR PRODUCING 2-(TETRAZOL-5-YL)-4-OXO-4H-BENZOPYRANS
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0716088A1
公开(公告)日:1996-06-12
There is disclosed a process for producing a 2-(tetrazol-5-yl)-4-oxo-4H-benzopyran of general formula (1):
which comprises reacting a hydroxyacetophenone of general formula (2):
with a tetrazole compound of general formula (3):
in the presence of a base in a solvent composed mainly of at least one selected from hydrocarbons, halogenated hydrocarbons and alcohols, and then treating the reaction mixture under acidic conditions.
[EN] SYNTHESIS OF 2-ACYL SUBSTITUTED CHROMANES AND INTERMEDIATES THEREOF<br/>[FR] SYNTHESE DE CHROMANES A SUBSTITUTION 2-ACYLE ET DES INTERMEDIAIRES DE CEUX-CI
申请人:COR THERAPEUTICS INC
公开号:WO2001092250A2
公开(公告)日:2001-12-06
Novel processes for producing enantiomerically enriched and enantiomerically pure compositions of 2-acyl substituted chromane compounds, and 2-acylchromane compounds that are intermediates for producing platelet aggregation inhibitors and/or are themselves potent platelet aggregation inhibitors are disclosed. Further disclosed are processes for producing salts such as acid addition salts for such enantiomerically enriched compositions.