| 摘要 |
The present invention is directed to double prodrugs containing polymeric-based transport forms. These polymeric prodrugs are preferably of formula (I) wherein: L1 is a bifunctional linking moiety; in formula (a) B is H, a leaving group, a residue of an amine-containing moiety, or a residue of a hydroxyl-containing moiety; Y1-4 are independently O, S, or NR12; R1, R4, R9, R10 and R12, are independently selected from the group consisting of hydrogen C1-6 alkyls, C3-12 branched alkyls, C3-8 cycloalkyls, C1-6 substituted alkyls, C3-8 substituted cycloalkyls, aryls, substituted aryls, aralkyls, C1-6 heteroalkyls, substituted C1-6 heteroalkyls; R2, R3, R5 and R6 are independently selected from the group consisting of hydrogen, C1-6 alkyls, C1-6 alkoxy, phenoxy, C1-8 heteroalkyls, C1-8 heteroalkoxy, substituted C1-6 alkyls, C3-8 cycloalkyls, C3-8 substituted cycloalkyls, aryls, substituted aryls, aralkyls, halo-, nitro-, cyano-, carboxy-, C1-6 carboxyalkyls and C1-6 alkyl carbonyls; Ar is a moiety which when included in Formula (I) forms a multi-substituted aromatic hydrocarbon or a multi-substituted heterocyclic group; (m), (r), (s), (t), (u) and (v) are independently zero or one; (p) is zero or a positive integer; and R11 is a substantially non-antigenic polymer. The first prodrug is generated when the polymeric portion of the double prodrug is cleaved and the parent molecule is generated rapidly thereafter in vivo, preferably as a result of a 1,6 or 1,4 benzyl elimination-reaction. Methods of preparing the compounds and methods of treatment are also disclosed.
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