Patent ID: 8318702

Claim:
A compound of formula (I) or a salt thereof: (wherein the symbols are as defined below: —X— represents (1) a group of formula (II), or (2) a group of formula (III) —R 5 represents (1) —H, (2) —OH, (3) halogen, (4) lower alkyl which may be substituted with one or more halogens, (5) O-lower alkyl which may be substituted with one or more halogens, (6) —S-lower alkyl, (7) cyano, (8) amino which may be substituted with one or two lower alkyls, or (9) cyclic amino which may be substituted with one or more groups selected from the group consisting of lower alkyl, oxo, —OH, —O-lower alkyl, and amino which may be substituted with one or two lower alkyls (provided that the triazine ring to which —R 5 is attached is attached to the nitrogen atom in the cyclic amino), —R 6a , —R 6b , —R 6c and —R 6d , which may be the same or different, each represent (1) —H, (2) halogen, (3) lower alkyl which may be substituted with one or more halogens, (4) O-lower alkyl which may be substituted with one or more halogens, (5) —S-lower alkyl, or (6) cyano, —W represents a group represented by -A-B, -A- is —S(═O) 2 — —B is isopropyl, —R 1a , —R 1b , R 1c and —R 1d are each —H, —R 2 is —O-methyl, —R 4 is —H and —R 3 is 4-(4-methylpiperazin-1-yl)piperidin-1-yl.