Radical-mediated dehydrative preparation of cyclic imides using (NH<sub>4</sub>)<sub>2</sub>S<sub>2</sub>O<sub>8</sub>–DMSO: application to the synthesis of vernakalant
作者:Dnyaneshwar N Garad、Subhash D Tanpure、Santosh B Mhaske
DOI:10.3762/bjoc.11.113
日期:——
efficient and new dehydrating reagent for a convenient one-pot process for the synthesis of miscellaneous cyclic imides in high yields starting from readily available primary amines and cyclic anhydrides. A plausible radical mechanism involving DMSO has been proposed. The application of this facile one-pot imide forming process has been demonstrated for a practical synthesis of vernakalant.
[EN] CYCLIC PHOSPHATE SUBSTITUTED NUCLEOSIDE DERIVATIVES AND METHODS OF USE THEREOF FOR THE TREATMENT OF VIRAL DISEASES<br/>[FR] DÉRIVÉS DE NUCLÉOSIDES CYCLIQUES À SUBSTITUTION PHOSPHATE ET LEURS PROCÉDÉS D'UTILISATION POUR LE TRAITEMENT DE MALADIES VIRALES
申请人:MERCK SHARP & DOHME
公开号:WO2017223020A1
公开(公告)日:2017-12-28
The present invention relates to Cyclic Phosphate Substituted Nucleoside Derivatives of Formula (I), and pharmaceutically acceptable salts thereof, wherein A, B, Q, V, R1, R2 and R3 are as defined herein. The present invention also relates to compositions comprising a Cyclic Phosphate Substituted Nucleoside Derivative, and methods of using the Cyclic Phosphate Substituted Nucleoside Derivatives for treating or preventing HCV infection in a patient.
medicine with a broad range of pharmacological functions. Goodyeroside A, an epimer of kinsenoside, remains less explored. In this report we chemically synthesized kinsenoside, goodyeroside A and their analogues with glycan variation, chirality inversion at chiral center(s), and bioisosteric replacement of lactone with lactam. Among these compounds, goodyeroside A and its mannosyl counterpart demonstrated
人参皂苷是来自草药的主要生物活性成分,具有广泛的药理功能。Goodyeroside A 是kinsenoside 的一种差向异构体,仍然很少被探索。在本报告中,我们化学合成了人参皂苷、Goodyeroside A 及其类似物,具有聚糖变异、手性中心的手性反转以及内酰胺对内酯的生物等排置换。在这些化合物中,goodyeroside A 及其甘露糖基对应物表现出优异的抗炎功效。此外,还发现枸杞苷 A 通过抑制 NF-κB 信号通路有效抑制炎症。还探索了构效关系,以进一步开发更有前途的人参皂苷类似物作为候选药物。