Patent ID: 7144877

Claim:
A compound represented by the formula (x) wherein: R 1 is selected from the group consisting of hydrogen and OH; R 2 is selected from the group consisting of hydrogen and OH; —O—D is a drug containing at least one hydroxyl wherein O is derived from the hydroxyl moiety of the drug; Q is CH 2 or O; V and V* are independently NR 7 , O, S or CR 8 R 9 ; R 10 is R 8 or (CR 8 R 9 ) r Z′; Z′ is selected from the group consisting of CO 2 H, SO 3 H, OSO 3 H, SO 2 H, P(O)(OR 6 )(OH), OP(O)(OR 6 )(OH) and pharmaceutically acceptable salts thereof; m is 0 or 1; n is 0, 1, 2, 3 or 4; p is 0, 1 or 2, providing that when m is 0 then p is not 0; each q is independently 1, 2, 3 or 4; r is 0 or 1; R 6 is selected from the group consisting of alkyl, substituted alkyl, substituted aryl and substituted aryl; each R 7 , R 8 and R 9 is independently hydrogen, alkyl, substituted alkyl, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, cycloalkyl, substituted cycloalkyl, heterocycle, substituted heterocycle, aryl, substituted aryl, heteroaryl, substituted heteroaryl or R 8 and R 9 together with the atoms to which they are attached form a cycloalkyl, substituted cycloalkyl, heterocycle or substituted heterocyclic ring, or, when R 7 and R 9 are present and attached to adjacent atoms, then R 7 and R 9 together with the atoms to which they are attached form a cycloalkyl, substituted cycloalkyl, heterocycle or substituted heterocyclic ring.