A Versatile Set of Aminooxy Amino Acids for the Synthesis of Neoglycopeptides
作者:Michael R. Carrasco、Ryan T. Brown
DOI:10.1021/jo034984x
日期:2003.11.1
N-alkylaminooxy amino acids have been synthesized in 22-56% overall yield from readily available amino acid precursors. Each amino acid can be efficiently incorporated into peptides using Boc-chemistry-based solid-phasepeptidesynthesis, and in three of the four cases the resulting peptides can be chemoselectively glycosylated at the aminooxy side chains to generate neoglycopeptides. The range of N-alkylaminooxy
Design and Structure−Activity Relationships of Potent and Selective Inhibitors of Blood Coagulation Factor Xa
作者:William R. Ewing、Michael R. Becker、Vincent E. Manetta、Roderick S. Davis、Henry W. Pauls、Helen Mason、Yong Mi Choi-Sledeski、Daniel Green、Don Cha、Alfred P. Spada、Daniel L. Cheney、Jonathan S. Mason、Sebastien Maignan、Jean-Pierre Guilloteau、Karen Brown、Dennis Colussi、Ross Bentley、Jeff Bostwick、Charles J. Kasiewski、Suzanne R. Morgan、Robert J. Leadley、Christopher T. Dunwiddie、Mark H. Perrone、Valeria Chu
DOI:10.1021/jm990040h
日期:1999.9.1
The discovery of a series of non-peptide factor Xa (FXa) inhibitors incorporating 3-(S)-amino-2-pyrrolidinone as a central template is described. After identifying compound 4, improvements in in vitro potency involved modifications of the liphophilic group and optimizing the angle of presentation of the amidine group to the S1 pocket of FXa. These studies ultimately led to compound RPR120844, a potent inhibitor of FXa (Ki = 7 nM) which shows selectivity for FXa over trypsin, thrombin, and several fibrinolytic serine proteinases. RPR120844 is an effective anticoagulant in both the rat model of FeCl2-induced carotid artery thrombosis and the rabbit model of jugular vein thrombus formation.