The invention relates to cis- and trans-12, 13-cyclopropyl and 12,13-cyclobutyl epothilones of formula I to IV
1
wherein Ar is a radical represented by the following structure:
2
and the other radicals and symbols have the meanings as defined herein; to their chemical synthesis and biological evaluation; their use in the treatment of neoplastic diseases and to pharmaceutical preparations containing such compounds. The compounds described herein are potent tubulin polymerization promoters and cytotoxic agents.
Chemical Synthesis and Biological Evaluation of <i>cis</i>- and <i>trans</i>-12,13-Cyclopropyl and 12,13-Cyclobutyl Epothilones and Related Pyridine Side Chain Analogues
作者:K. C. Nicolaou、Kenji Namoto、Andreas Ritzén、Trond Ulven、Mitsuru Shoji、Jim Li、Gina D'Amico、Dennis Liotta、Christopher T. French、Markus Wartmann、Karl-Heinz Altmann、Paraskevi Giannakakou
DOI:10.1021/ja011338b
日期:2001.9.1
The design, chemical synthesis, and biologicalevaluation of a series of cyclopropyl and cyclobutyl epothiloneanalogues (3-12, Figure 1) are described. The synthetic strategies toward these epothilones involved a Nozaki-Hiyama-Kishi coupling to form the C15-C16 carbon-carbon bond, an aldol reaction to construct the C6-C7 carbon-carbon bond, and a Yamaguchi macrolactonization to complete the required