Tetrahydroisoquinolin-2-yl derivatives as thromboxane A2 antagonists
申请人:SMITH KLINE & FRENCH LABORATORIES
LIMITED
公开号:EP0300725A1
公开(公告)日:1989-01-25
The invention provides compounds of the formula (I):
and salts thereof; wherein
A is a group NR³SO₂ or SO₂NR³;
Ra is an acyclic hydrocarbon group having from 1 to 4 linear carbon atoms;
Rb is a bond or an acyclic hydrocarbon group having from 1 to 3 linear carbon atoms, provided that the total number of linear carbon atoms in Ra and Rb taken together does not exceed four and that the carbon atom in Ra which is adjacent to the isoquinoline ring nitrogen atom is saturated;
the group
is a monocyclic group having between three and seven ring members and containing up to three heteroatoms;
Y is CO₂H or a group hydrolysable to CO₂H;
R¹ is phenyl optionally substituted by one or more substituents chosen from the group comprising halogen, C₁₋₄alkyl, C₁₋₆acyl, C₁₋₄alkoxy, nitro and trifluoromethyl;
R² is hydrogen or one or more C₁₋₄alkyl substituents located at the 1, 3 and 4 positions of the isoquinoline ring; and
R³ is hydrogen or C₁₋₆alkyl.
Also provided are compositions containing the compounds of the formula (I), a process for their preparation and their use as thromboxane A₂ antagonists.