Patent ID: 8198315

Claim:
A compound of the formula wherein a dashed line indicates the presence or absence of a covalent bond; Y is CO 2 R 2 , CON(R 2 ) 2 , CON(OR 2 )R 2 , CON(CH 2 CH 2 OH) 2 , CONH(CH 2 CH 2 OH), CH 2 OH, P(O)(OH) 2 , CONHSO 2 R 2 , SO 2 N(R 2 ) 2 , SO 2 NHR 2 , wherein R 2 is independently H, C 1 -C 6 alkyl, unsubstituted phenyl, or unsubstituted biphenyl; B is —CH(OH)—, —C(═O)—, —CH 2 CH(OH)—, or —CH 2 C(═O)—; and D is alkyl, aryl, heteroaryl, arylalkyl, or heteroarylalkyl.