Patent ID: 7601874

Claim:
A compound of formula (Ia): wherein: the A, C or D ring is independently fully saturated; C1, C4, C11, C12, C15 and C16 are each independently substituted with two hydrogens; C9 and C14 are each independently substituted with hydrogen; R 1 is —OR 7 ; R 2 is —R 8 —OR 7 ; R 3 is —R 10 —N(R 7 ) 2 ; R 4a and R 4b together form alkylidene or haloalkylidene; R 5 is alkyl; R 6 is hydrogen, —R 8 —OR 7 or —R 8 —N(R 7 ) 2 ; each R 7 is independently selected from the group consisting of hydrogen, —R 10 —OR 9 , —R 10 —N(R 9 ) 2 , alkyl, optionally substituted cycloalkyl, optionally substituted cycloalkylalkyl, optionally substituted aryl, optionally substituted aralkyl, optionally substituted heterocyclylalkyl, optionally substituted heteroaryl and optionally substituted heteroarylalkyl; each R 8 is independently selected from the group consisting of a direct bond, a straight or branched alkylene chain, and a straight or branched alkenylene chain; each R 9 is independently selected from the group consisting of hydrogen, alkyl, aryl and aralkyl; and each R 10 is independently selected from the group consisting of a straight or branched alkylene and a straight or branched alkenylene chain, as a single stereoisomer, a mixture of stereoisomers, or as a racemic mixture of stereoisomers; or a pharmaceutically acceptable salt.