Patent ID: 8580779

Claim:
A compound having Formula I, its enantiomers, diastereoisomers, tautomers or a pharmaceutically acceptable salt thereof, wherein: R 1 is H or substituted or unsubstituted C 1-6 alkyl; R 2 is H or substituted or unsubstituted C 1-6 alkyl; R 3 is C—R 7 ; R 4 is C—R 8 ; R5 is unsubstituted C 1-6 alkyl; R 6 is 2-benzofuran; R 15 is C—R 16 ; R 17 is C—R 18 ; R 7 is H or chlorine; R 8 is H or chlorine; R 16 is H, substituted or unsubstituted C 1-6 alkyl, halogen, —CO 1-3 alkyl, CN, C 2-6 alkenyl, C 2-6 alkynyl, C(O)R 19 , NR 20 R 21 or hydroxyl; R 18 is H, substituted or unsubstituted C 1-6 alkyl, halogen, —CO 1-3 alkyl, CN, C 2-6 alkenyl, C 2-6 alkynyl, C(O)R 22 , NR 23 R 24 or hydroxyl; R 19 is H or substituted or unsubstituted C 1-6 alkyl; R 20 is H or substituted or unsubstituted C 1-6 alkyl; R 21 is H or substituted or unsubstituted C 1-6 alkyl; R 22 is H or substituted or unsubstituted C 1-6 alkyl; R 23 is H or substituted or unsubstituted C 1-6 alkyl; R 24 is H or substituted or unsubstituted C 1-6 alkyl.