abstract |
A compound having a structure represented by formula (I): and pharmaceutically acceptable salts, solvates and hydrates thereof, in which: (A) RA is (i) OR1; (ii) O (CH2) mC (> = O) R2; (iii) OC (> = O) R4; (iv) OS (O2) N (R3R3A); (v) O (CH2) nNHR5; (vi) N (H) S (O2) R6; (vii) OCH2CH2OCH2CH2C (> = O) R2; or (viii) OCH2CH2OCH2CH2NHR5; |