Synthesis of 2-Hydroxymethyl-3,5-dimethyl-4-methoxypyridine : A Key Intermediate for Omeprazole
摘要:
A synthesis of 2-hydroxymethyl-3,5-dimethyl-4-methoxypyridine, a key intermediate for the preparation of gastric acid inhibiting compound omeprazole, is described. The procedure consists of preparation of pyrone, pyridone and pyridine derivatives sequentially.
Synthesis of 2-Hydroxymethyl-3,5-dimethyl-4-methoxypyridine : A Key Intermediate for Omeprazole
摘要:
A synthesis of 2-hydroxymethyl-3,5-dimethyl-4-methoxypyridine, a key intermediate for the preparation of gastric acid inhibiting compound omeprazole, is described. The procedure consists of preparation of pyrone, pyridone and pyridine derivatives sequentially.
Novel processes and intermediates are provided according to the general reaction scheme: Formula I, II, III, IV (I), (II), (III), (IV) utilizing a ruthenium catalyst in an oxidative cleavage of the triene 4 whereby an aldehyde may be produced and optionally taken on to a carboxylic acid 5: Formula V (V)