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US 2010/0076192 A1Published application
PROCESS FOR PRODUCING 5-METHYL-4,5,6,7-TETRAHYDROTHIAZOLO[5,4-c]PYRIDINE-2-CARBOXYLIC ACID
AssigneeDaiichi Pharmaceutical Co., Ltd.
InventorsHiroshi Nagasawa, Koji Sato, Tsutomu Yagi, Yasuo Kitani
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Abstract
5-Methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine of formula (6) or a salt thereof, is prepared by reacting 2-amino-5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine of formula (2) or a salt thereof, with an alkali metal nitrite in the presence of a reducing agent in an aqueous solution of an acidic compound.
Claims3
A process for producing 5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine of formula (6) or a salt thereof, comprising:
- reacting 2-amino-5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine of formula (2) or a salt thereof,
- with an alkali metal nitrite in the presence of a reducing agent in an aqueous solution of an acidic compound.
Dependencies are inferred from the claim text.