Patent ID: 8809353

Claim:
A compound of formula IIIA or formula IIIB: or a pharmaceutically acceptable salt or derivative thereof, wherein: R YZ is C 1 -C 6 alkyl; R 3 is C 1 -C 4 alkyl; and R 5 is hydrogen or halo; provided that the following compounds are excluded: carbamic acid, [(3S)-1-[2-(2-hydroxyphenyl)-7-methyl-4-quinazolinyl]-3-pyrrolidinyl]-,1,1-dimethylethyl ester; carbamic acid, [(3R)-1-[2-(2-hydroxyphenyl)-7-methyl-4-quinazolinyl]-3-pyrrolidinyl]-,1,1-dimethylethyl ester; and carbamic acid, [(3R)-1-[2-(2-fluoro-6-hydroxyphenyl)-7-methyl-4-quinazolinyl]-3-pyrrolidinyl]-,1,1-dimethylethyl ester.