[EN] 2'-SUBSTITUTED NUCLEOSIDE DERIVATIVES AND METHODS OF USE THEREOF FOR THE TREATMENT OF VIRAL DISEASES<br/>[FR] DÉRIVÉS DE NUCLÉOSIDE 2'-SUBSTITUÉS ET PROCÉDÉS D'UTILISATION DE CEUX-CI POUR LE TRAITEMENT DE MALADIES VIRALES
申请人:MERCK SHARP & DOHME
公开号:WO2012142085A1
公开(公告)日:2012-10-18
The present invention relates to 2'-Substituted Nucleoside Derivatives of Formula (I): and pharmaceutically acceptable salts thereof, wherein A, B, X, R1, R2 and R3 are as defined herein. The present invention also relates to compositions comprising at least one 2'-Substituted Nucleoside Derivative, and methods of using the 2'-Substituted Nucleoside Derivatives for treating or preventing HCV infection in a patient.
Formal synthesis of (+)-lactacystin from <scp>l</scp>-serine
作者:Philip C. Bulman Page、Ross L. Goodyear、Yohan Chan、Alexandra M. Z. Slawin、Steven M. Allin
DOI:10.1039/c9ra07244f
日期:——
A formal, stereocontrolledsynthesis of lactacystin has been completed from t-Bu-O-L-serine, providing the keyintermediate 13, also useful for the generation of a range of C-9 analogues.
由t - Bu -O -L-丝氨酸完成了 lactacystin 的正式立体控制合成,提供了关键中间体13,也可用于生成一系列 C-9 类似物。
Direct Sulfide-Catalyzed Enantioselective Cyclopropanations of Electron-Deficient Dienes and Bromides
作者:Qing-Zhu Li、Xiang Zhang、Rong Zeng、Qing-Song Dai、Yue Liu、Xu-Dong Shen、Hai-Jun Leng、Kai-Chuan Yang、Jun-Long Li
DOI:10.1021/acs.orglett.8b01537
日期:2018.6.15
A catalytic highly regioselective, diastereoselective, and enantioselective cyclopropanation of electron-deficient dienes and bromides via direct sulfide organocatalysis is reported. A variety of vinylcyclopropanes featuring a quaternary chiral center were synthesized in up to 99% yield and up to 98:2 enantiomeric ratio (er). These products could be facilely transformed to various interesting molecules
Copper-Catalyzed Intermolecular Difunctionalization of Styrenes with Thiosulfonates and Arylboronic Acids via a Radical Relay Pathway
作者:Qingjin Liang、Patrick J. Walsh、Tiezheng Jia
DOI:10.1021/acscatal.9b04887
日期:2020.2.21
intermolecular difunctionalization strategy of styrenes with methyl thiosulfonates and arylboronic acids has been developed. This method provides an efficient and straightforward avenue to a broad range of 2,2-diarylethyl sulfone derivatives from readily available methyl thiosulfonates and commercially available styrene and arylboronic acid derivatives. The diverse substrate scope attests to the high
Unsymmetrical disulfide and sulfenamide synthesis via reactions of thiosulfonates with thiols or amines
作者:Nobukazu Taniguchi
DOI:10.1016/j.tet.2017.02.047
日期:2017.4
The reactivity of thiosulfonates with nucleophilic reagents was investigated. When reactions of thiosulfonates with thiols were performed, unsymmetricaldisulfides were obtained in excellent yields. This procedure could employ numerous aryl or alkyl thiols. On the other hand, reactions of thiosulfonates with amines proceeded in the presence of a copper catalyst. The procedure was performed efficiently