NOVEL SULFONIC ACIDE DERIVATIVE AND MEDICINAL USE THEREOF.

摘要

A sulfonamide derivative represented by general formula (I) and a thromboxane A2 receptor antagonist containing the same as the active ingredient, wherein R1 represents (i) -COOR2 wherein R2 represents (1) hydrogen, (2) a pharmacologically acceptable cation, or (3) a C1-C14 alkyl, or (ii) -C(=O)-R3 wherein R3 represents a C1-C4 alkyl; A represents (i) -(CH2)n -wherein n represents an integer of 0 to 3, (ii) -CH=CH-, or (iii) -O-C(R4)(R5)- wherein R4 and R5 may be the same or different from each other and each represents (1) hydrogen or (2) a C1-C4 alkyl, and W represents -NH- or -O-. This compound has an excellent thromboxane A2 receptor antagonism and hence can be used as a highly active and persistent thromboxane A2 receptor antagonist.