4-acylamino(halogeno) alkyl-quinoline derivatives, their preparation and their use as melatonin agonists

摘要

PCT No. PCT/JP96/01759 Sec. 371 Date Dec. 10, 1996 Sec. 102(e) Date Dec. 10, 1996 PCT Filed Jun. 26, 1996 PCT Pub. No. WO97/01539 PCT Pub. Date Jan. 16, 1997A compound of the formula: wherein R1 represents hydrogen or an optionally substituted hydrocarbon group; R2 represents an optionally substituted hydrocarbon group, an optionally substituted amino group or a substituted hydroxyl group; X represents an optionally halogenated lower alkylene group; Y represents a substituent; n represents an integer of 0 to 6; and m represents 0 or 1; or a salt thereof, a process for producing it, an intermediate for the production, and a pharmaceutical composition containing it are provided.