Process for producing 5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine-2-carboxylic acid
申请人:Daiichi Sankyo Company, Limited
公开号:US08058440B2
公开(公告)日:2011-11-15
5-Methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine-2-carboxylic acid of formula (5) or a salt thereof,
is prepared by reacting reacting 2-bromo-5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine of formula (3) or a salt thereof,
with a metal cyanide, to obtain 2-cyano-5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine of formula (4) or a salt thereof,
and hydrolyzing the 2-cyano-5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine of formula (4) or a salt thereof.
化合物5-甲基-4,5,6,7-四氢噻唑并[5,4-c]吡啶-2-羧酸(化学式(5))或其盐,是通过将化合物2-溴-5-甲基-4,5,6,7-四氢噻唑并[5,4-c]吡啶(化学式(3))或其盐与金属氰化物反应,得到化合物2-氰基-5-甲基-4,5,6,7-四氢噻唑并[5,4-c]吡啶(化学式(4))或其盐,然后水解化合物2-氰基-5-甲基-4,5,6,7-四氢噻唑并[5,4-c]吡啶(化学式(4))或其盐而制备得到的。