The present invention relates to a compound of the formula (I)wherein R1 is benzofuranyl substituted by halogen, or styryl substituted by halogen; R2 is substituted hydroxy, substituted mercapto or substituted sulfonyl; and X is or pharmaceutically acceptable salts thereof. The compound (1) of the present invention and pharmaceutically acceptable salts thereof possess a strong inhibitory activity on the production of nitric oxide (NO), and are useful for prevention and/or treatment of NO-mediated diseases in human being and animals.
1
This invention provides a piperidine compound of the formula.
wherein
R1 is hydrogen or trihalomethyl,
R2 is hydrogen or protected carboxy,
R3 is heterocyclic group or aryl which may have halogen, and
hydroxy, O and pharmaceutically acceptable salt thereof.
This compound possesses hypotensive activity and are useful as anti-hypertensive agent. The invention further relates to processes for the preparation of this compound and pharmaceutical composition comprising compound of the above formula.