Design and Synthesis of C6−C8 Bridged Epothilone A
摘要:
A conformationally restrained epothilone A analogue (3) with a short bridge between methyl groups at C6 and C8 was designed and synthesized. Preliminary biological evaluation indicates 3 to be only weakly active (IC50 = 8.5 mu M) against the A2780 human ovarian cancer cell line.
The present invention provides 14-methyl epothilone compounds, along with intermediates thereto, methods for their preparation, compositions comprising the compounds, and methods for their use in the treatment of cancer and other diseases and conditions characterized by undesired cellular hyperproliferation.
A new bifunctional asymmetric catalyst containing a Lewis acid and a Lewis base (1) was developed and applied to the catalytic asymmetric cyanosilylation of aldehydes. The products were obtained generally with excellent enantiomeric excess. The experiments using the control catalyst (5) and the catalyst containing more electron-rich phosphine oxide (6) suggest that the catalyst 1 should promote the
Design and Synthesis of C6−C8 Bridged Epothilone A
作者:Weiqiang Zhan、Yi Jiang、Peggy J. Brodie、David G. I. Kingston、Dennis C. Liotta、James P. Snyder
DOI:10.1021/ol800422q
日期:2008.4.1
A conformationally restrained epothilone A analogue (3) with a short bridge between methyl groups at C6 and C8 was designed and synthesized. Preliminary biological evaluation indicates 3 to be only weakly active (IC50 = 8.5 mu M) against the A2780 human ovarian cancer cell line.