Patent ID: 8481547

Claim:
A compound of formula (I) wherein a is an integer from 0 to 1; R 1 is selected from the group consisting of halogen, C 1-4 alkyl, —CH 2 —OH, C 1-4 alkoxy, phenyl, 5 to 6 membered heteroaryl, benzo[d][1,3]dioxolyl, —CO 2 H, —C(O)—NR A R B , —C(O)—NH—(C 1-4 alkyl)-O—(C 1-4 alkyl), —C(O)—NH-phenyl, —C(O)—NH—CH 2 -phenyl, —C(O)—NH—C 3-6 cycloalkyl and —CH 2 —NH—C 3-6 cycloalkyl; wherein R A and R B are each independently selected from the group consisting of hydrogen and C 1-4 alkyl; and wherein the phenyl, whether alone or as part of a substituent group is optionally substituted with one or more substituents independently selected from halogen, hydroxy, C 1-4 alkyl, fluorinated C 1-4 alkyl, C 1-4 alkoxy and fluorinated C 1-4 alkoxy; X is selected from the group consisting of O and S; L is selected from the group consisting of —NH—CH 2 CH 2 —N(R C )— and wherein R C is selected from the group consisting of hydrogen, methyl and ethyl; R 2 is selected from the group consisting of C 1-4 alkyl, C 2-4 alkenyl, C 2-4 alkynyl, —CH 2 -thienyl and —CH 2 -furyl; or a pharmaceutically acceptable salt thereof.