Synthesis of Enantiomerically Pure (Purin-6-yl)phenylalanines and Their Nucleosides, a Novel Type of Purine-Amino Acid Conjugates
作者:Petr Čapek、Radek Pohl、Michal Hocek
DOI:10.1021/jo051110x
日期:2005.9.1
Enantiomerically or diastereomerically pure 4-(purin-6-yl)phenylalanines, a novel type of stable amino acid-purine conjugates, were synthesized by palladium-catalyzed cross-coupling reactions of protected 4-boronophenylalanines or 4-(trimethylstanyl)phenylalanines with diverse 6-halopurines (9-benzyl-6-halopurines and 9-(tetrahydropyran-2-yl)-6-halopurines as well as acyl- and silyl-protected 6-halopurine
Synthesis and biological activity of novel potent endothelin-converting enzyme-1 inhibitors
作者:Fariborz Firooznia、Candido Gude、Kenneth Chan、Cynthia A. Fink、Ying Qiao、Yoshitaka Satoh、Nicholas Marcopoulos、Paula Savage、Michael E. Beil、Charles W. Bruseo、Angelo J. Trapani、Arco Y. Jeng
DOI:10.1016/s0960-894x(00)00657-0
日期:2001.2
Through directed screening of metalloprotease inhibitors. CGS 30084 (1) has been identified as a potent endothelin-converting enzyme-1 (ECE-1) inhibitor in vitro (IC50 = 77 nM). Herein we report the synthesis and biological activities of analogues derived from this lead. based on modifications of the biphenyl moiety. Compound 10. the thioacetate methyl ester prodrug derivative of compound 6m. was found to he an orally active and potent inhibitor of ECE-1 activity in rats. (C) 2001 Elsevier science Ltd. All rights reserved.