2-Aethyl-1-hydroxy-cyclopentancarbonitril;Cyanhydrin v. 2-Aethyl-cyclopentanon;2-Ethyl-1-hydroxycyclopentane-1-carbonitrile;2-ethyl-1-hydroxycyclopentane-1-carbonitrile
Hydroxynitrile lyase-catalyzed addition of HCN to 2-substituted cyclopentanones
作者:Christoph Kobler、Franz Effenberger
DOI:10.1016/j.tetasy.2004.10.010
日期:2004.11
stereoselectivity of hydroxynitrile lyases (HNLs) catalyzed addition of HCN to a variety of monosubstituted cyclopentanones yielding the corresponding cyanohydrins is presented. With PaHNL from bitter almond as catalyst, the HCN addition to 2-alkyl cyclopentanones 1b–d is highly (R)-selective, leading to the cis-(1R,2S)- and trans-(1R,2R)-diastereomers. The addition to the sterically less demanding methyl compound
Inhibitors of cysteine proteases and methods of use thereof
申请人:Pardes Biosciences, Inc.
公开号:US11124497B1
公开(公告)日:2021-09-21
The disclosure provides compounds with warheads and their use in treating medical diseases or disorders, such as viral infections. Pharmaceutical compositions and methods of making various compounds with warheads are provided. The compounds are contemplated to inhibit proteases, such as the 3C, CL- or 3CL-like protease. Exemplary compounds provided include Formula II-I, where R3, RB are provided herein: