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US4678803A Optical isomers, processes for production thereof and pharmaceutical composition thereof 失效
光学异构体,其制备方法及其药物组合物

Optical isomers, processes for production thereof and pharmaceutical
composition thereof
摘要:
An optical isomer selected from the group consisting of (2'R),(3R)-3,4-dihydro-8-(2'-hydroxy-3'-isopropylamino)propoxy-3-nitroxy-2H-1-benzopyran, (2'S),(3R)-3,4-dihydro-8-(2'-hydroxy-3'-isopropylamino)propoxy-3-nitroxy-2H-1-benzopyran and acid addition salts of these isomers, process for producing these isomers and a pharmaceutical composition thereof useful for the treatment of cardiovascular diseases.
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