Novel substituted pyrimidines as HCV replication (replicase) inhibitors
作者:Cecil D. Kwong、Jeremy L. Clark、Anita T. Fowler、Feng Geng、Hollis S. Kezar、Abhijit Roychowdhury、Robert C. Reynolds、Joseph A. Maddry、Subramaniam Ananthan、John A. Secrist、Neng-Yang Shih、John J. Piwinski、Cheng Li、Boris Feld、Hsueh-Cheng Huang、Xiao Tong、F. George Njoroge、Ashok Arasappan
DOI:10.1016/j.bmcl.2011.11.091
日期:2012.1
Compound I was identified as a HCV replication inhibitor from screening/early SAR triage. Potency improvement was achieved via modulation of substituent on the 5-azo linkage. Due to potential toxicological concern, the 5-azo linkage was replaced with 5-alkenyl or 5-alkynyl moiety. Analogs containing the 5-alkynyl linkage were found to be potent inhibitors of HCV replication. Further evaluation identified compounds 53 and 63 with good overall profile, in terms of replicon potency, selectivity and in vivo characteristics. Initial target engagement studies suggest that these novel carbanucleoside-like derivatives may inhibit the HCV replication complex (replicase). (C) 2011 Elsevier Ltd. All rights reserved.
Platinum(II)-Catalyzed Reaction of 2-Alkynylbenzoates or Benzothioates with Vinyl Ethers: A Concise Method for Synthesis of 1-Acyl-4-alkoxy- or 1-Acyl-4-alkylsulfanylnaphthalene Derivatives
A concise method for the preparation of 1-acyl-4-alkoxy- or 1-acyl-4-alkylsulfanyl naphthalenes has been developed by the reaction of o-ethynylbenzoates or benzothioates with vinyl ethers, in the presence of a catalytic amount of PtCl2. It is proposed that the reaction proceeds through [3 + 2]-cycloaddition of the platinum-containing carbonyl ylides followed by 1,2-alkyl migration.
Synthesis of Naphthalene Derivatives through Platinum(II)-Catalyzed Reaction of 2-Alkynylbenzoates with Vinyl Ethers
for the preparation of 1-acyl-4-alkoxy- or 1-acyl-4-alkylsulfanylnaphthalenes has been developed by the PtCl 2 -catalyzed reaction of O-ethynylbenzoates or benzothioates with vinyl ethers. Treatment of O-alkynylbenzoate derivatives with PtCl 2 generated the platinum(II)-containing carbonyl ylides as a key reactive intermediate and these species reacted with vinyl ethers to give substituted naphthalenes