N-(2-cyanoethyl)-6-fluoroalkyl-2h-1-benzopyran derivatives

摘要

PCT No. PCT/JP94/00682 Sec. 371 Date Jun. 7, 1995 Sec. 102(e) Date Jun. 7, 1995 PCT Filed Apr. 25, 1994 PCT Pub. No. WO94/25021 PCT Pub. Date Nov. 10, 1994Described herein are benzopyran derivatives represented by the formula: <IMAGE> (I) wherein R, X and Y represent any of the following combinations: - R X Y - C2F5 O H - C2F5 S H - CF3 S F - C2F5 S F - C3F7 S F - and pharmaceutically acceptable salts thereof. These compounds have an excellent potassium channel activity and are also excellent from the aspect of safety.