Synthesis, tubulin assembly, and antiproliferative activity against MCF7 and NCI/ADR-RES cancer cells of 10-O-acetyl-5′-hydroxybutitaxel

Bioorganic & Medicinal Chemistry Letters
2008.0

Abstract

A highly efficient kinetic resolution of racemic cis-4-(2-tert-butyldimethylsilyloxy-1,1-dimethyl)ethyl-3-tert-butyldimethylsilyloxy-azetidin-2-one with 7-O-triethylsilylbaccatin III was carried out to furnish 10-O-acetyl-5'-hydroxybutitaxel after removal of the silyl protecting groups. The compound was 50% as active as paclitaxel in a tubulin assembly assay and showed significantly decreased activity against MCF7 cell proliferation compared to paclitaxel.

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