Patent ID: 8178551

Claim:
A compound of Formula (I) or a pharmaceutically acceptable salt thereof: wherein, A is a direct bond or oxygen; R 1 is selected from the group consisting of hydrogen, —C(O)OC 1-10 alkyl, substituted —C(O)OC 1-10 alkyl, —C(O)OC 1-4 alkyl-Ar and substituted —C(O)OC 1-4 alkyl-Ar, Ar being selected from the group consisting of phenyl, naphthyl, furyl, pyridyl, thienyl, thiazolyl, isothiazolyl, pyrazolyl, triazolyl, tetrazolyl, imidazolyl, imidazolidinyl, benzofuranyl, indolyl, thiazolidinyl, isoxazolyl, oxadiazolyl, thiadiazolyl, morpholinyl, piperidinyl, piperazinyl, pyrrolyl, and pyrimidinyl, all of which are optionally substituted by one or more Z groups, Z being independently selected from the group consisting of C 1-4 alkyl, C 1-4 alkoxy, —(CH 2 ) m C(O)OR 3 , C(O)NR 3 R 4 , —CN, —(CH 2 ) n OH, —NO 2 , F, Cl, Br, I, —NR 3 R 4 and NHC(O)R 3 , wherein m is 0 to 4, n is 0 to 4, R 3 is hydrogen, C 1-6 alkyl or substituted C 1-6 alkyl, and R 4 is selected from the group consisting of C 1-6 alkyl, substituted C 1-6 alkyl, —CH 2 Ar and Ar, Ar being as defined above; and R 2 is selected from the group consisting of C 1-10 alkyl, substituted C 1-10 alkyl, C 3-10 carbocycle, substituted C 3-10 carbocycle, (CH 2 ) n -phenyl and substituted (CH 2 ) 17 -phenyl, wherein n is 0 to 4.