Patent ID: 8410105

Claim:
A compound of formula 1 or a pharmaceutically acceptable salt or hydrate: wherein: X is N; Y is O or S; W is N; R 1 , R 2 , and R 3 each independently is hydrogen or halogen; R 4 , R 5 , and R 6 each independently is hydrogen, halogen, C 1 ˜C 8 straight or branched alkyl, —C 1 -C 8 straight or branched alkoxy, nitro, cyano, —COOR 7 , —CH 2 —O—R 8 , —CH 2 COOR 7 , or —COR 7 ; Each R 7 independently is hydrogen or C 1 ˜C 8 straight or branched alkyl; and R 8 is hydrogen or cyano.