PCT No. PCT / JP96 / 03097 Sec. 371 Date Apr. 24, 1998 Sec. 102(e) Date Apr. 24, 1998 PCT Filed Oct. 24, 1996 PCT Pub. No. WO97 / 15549 PCT Pub. Date May 1, 1997The present invention relates to
phenylethanolamine compounds represented by general formula [I]: (where R1 represents
hydrogen or
halogen; R2 represents
hydrogen, hydroxy, lower alkoxy, lower alkoxy substituted with one or two lower alkoxycarbonyl or carboxy groups, lower alkoxy substituted with lower alkylaminocarbonyl which may be substituted with lower alkoxy, lower alkoxy substituted with cyclic aminocarbonyl of 4 to 6 carbon atoms, lower alkoxycarbonyl or carboxy; R3 represents
hydrogen, hydroxy, lower alkoxy or lower alkoxy substituted with one or two lower alkoxycarbonyl or carboxy groups; R2 and R3 may be bonded to each other to form
methylenedioxy substituted with carboxy or lower alkoxycarbonyl; and m and n are 0 or 1), and their pharmacologically acceptable salts, which have a potent beta 3
adrenergic stimulating effect and high beta 3
adrenergic receptor selectivity, as well as to processes for their production and intermediates in their production.