Palladium(II)-Catalyzed Highly Enantioselective C–H Arylation of Cyclopropylmethylamines
摘要:
C-H arylation via a Pd(II)/Pd(IV) catalytic cycle has been one of the most extensively studied C-H activation reactions since the 1990s. Despite the rapid development of this reaction in the past two decades, an enantioselective version has not been reported to date. Herein, we report a Pd(II)-catalyzed highly enantioselective (up to 99.5% ee) arylation of cyclopropyl C-H bonds with aryl iodides using mono-N-protected amino acid (MPAA) ligands, providing a new route for the preparation of chiral cis-aryl-cyclopropylmethylamines. The enantiocontrol is also shown to override the diastereoselectivity of chiral substrates.
Palladium(II)-Catalyzed Highly Enantioselective C–H Arylation of Cyclopropylmethylamines
摘要:
C-H arylation via a Pd(II)/Pd(IV) catalytic cycle has been one of the most extensively studied C-H activation reactions since the 1990s. Despite the rapid development of this reaction in the past two decades, an enantioselective version has not been reported to date. Herein, we report a Pd(II)-catalyzed highly enantioselective (up to 99.5% ee) arylation of cyclopropyl C-H bonds with aryl iodides using mono-N-protected amino acid (MPAA) ligands, providing a new route for the preparation of chiral cis-aryl-cyclopropylmethylamines. The enantiocontrol is also shown to override the diastereoselectivity of chiral substrates.
INDAZOLE COMPOUNDS AS KINASE INHIBITORS AND METHOD OF TREATING CANCER WITH SAME
申请人:University Health Network
公开号:US20140371202A1
公开(公告)日:2014-12-18
The present teaching provide indazole compounds represented by Structural Formulae (I) or (I′) or a pharmaceutically acceptable salt thereof. Also described are pharmaceutical compositions and methods of use thereof as protein kinase inhibitors, such as TTK protein kinase, polo-like kinase 4 (PLK4) and Aurora kinases having anticancer activity against breast cancer cells, colon cancer cells, and ovarian cancer cells.
C-Terminal Modifications of Histidyl-<i>N</i>-benzylglycinamides To Give Improved Inhibition of Ras Farnesyltransferase, Cellular Activity, and Anticancer Activity in Mice
作者:Dennis J. McNamara、Ellen Dobrusin、Daniele M. Leonard、Kevon R. Shuler、James S. Kaltenbronn、John Quin、Scott Bur、Charles E. Thomas、Annette M. Doherty、Jeffrey D. Scholten、Karen K. Zimmerman、Barbara S. Gibbs、Richard C. Gowan、Michael P. Latash、Wilbur R. Leopold、Sally A. Przybranowski、Judith S. Sebolt-Leopold
DOI:10.1021/jm970470c
日期:1997.10.1
CYCLOALKYL INHIBITORS OF PROTEIN FARNESYLTRANSFERASE