Abstract
A new series of disulfide-containing prodrugs of paclitaxel were designed, synthesized and evaluated against 6 cancer cell lines. Some of these prodrugs exhibited nearly equal or slightly better anticancer activity when compared to that of paclitaxel. These prodrugs contain water-soluble groups such as amino, carboxyl, hydroxyl, amino acids, etc., and exhibited 6–140fold increase in aqueous solubility when compared to paclitaxel. One of these prodrugs exhibited improved water solubility, better in vitro anticancer activity and significantly superior oral bioavailability in mice when compared to those of paclitaxel. Thus, we have identified a very promising lead compound for further optimization and evaluation as a potentially bioavailable water-soluble prodrug of paclitaxel.
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