Cyclic amide bioisosterism: Strategic application to the design and synthesis of HCV NS5B polymerase inhibitors
摘要:
Conformational modeling has been successfully applied to the design of cyclic bioisosteres used to replace a conformationally rigid amide bond in a series of thiophene carboxylate inhibitors of HCV NS5B polymerase. Select compounds were equipotent with the original amide series. Single-point mutant binding studies, in combination with inhibition structure-activity relationships, suggest this new series interacts at the Thumb-II domain of NS5B. Inhibitor binding at the Thumb-II site was ultimately confirmed by solving a crystal structure of 8b complexed with NS5B. (C) 2010 Elsevier Ltd. All rights reserved.
Cyclic amide bioisosterism: Strategic application to the design and synthesis of HCV NS5B polymerase inhibitors
作者:Hanbiao Yang、Robert T. Hendricks、Nidhi Arora、Dov Nitzan、Calvin Yee、Matthew C. Lucas、Yanli Yang、Amy Fung、Sonal Rajyaguru、Seth F. Harris、Vincent J.P. Leveque、Julie Q. Hang、Sophie Le Pogam、Deborah Reuter、Gisele A. Tavares
DOI:10.1016/j.bmcl.2010.06.008
日期:2010.8
Conformational modeling has been successfully applied to the design of cyclic bioisosteres used to replace a conformationally rigid amide bond in a series of thiophene carboxylate inhibitors of HCV NS5B polymerase. Select compounds were equipotent with the original amide series. Single-point mutant binding studies, in combination with inhibition structure-activity relationships, suggest this new series interacts at the Thumb-II domain of NS5B. Inhibitor binding at the Thumb-II site was ultimately confirmed by solving a crystal structure of 8b complexed with NS5B. (C) 2010 Elsevier Ltd. All rights reserved.
Ambient-Temperature Cobalt-Catalyzed Cycloaddition Strategies to Aromatic Boronic Esters
作者:Anne-Laure Auvinet、Joseph P. A. Harrity、Gerhard Hilt
DOI:10.1021/jo1004907
日期:2010.6.4
The room-temperature cobalt-catalyzed [4 + 2] cycloaddition of alkynylboronates and 1,3-dienes provides a convenient and general method for the synthesis of benzene-based aromatic boronicesters. Two complementary aromatization strategies involving in situ elimination and DDQ oxidation were explored, with the latter finding more generality. Finally, the potential of this technique to generate highly