Synthesis and helical properties of aromatic multilayered oligoureas
摘要:
Several aromatic multilayered oligoureas with different chain lengths and different numbers of chiral N-substituents were synthesized, and their helical conformation and induced handedness were examined by means of CD spectroscopy. Introduction of one chiral N-substituent is enough to induce handedness, and all the oligoureas examined exist predominantly as helical structures with all-S axial chirality. The hexaureas 6 and 7 had similar CD intensity to the tetraureas 4 and 5, and had larger CD intensity than diurea 8. The results indicate that the effect of a chiral N-substituent at the central benzene ring in inducing well-ordered handedness at the terminal positions of hexaureas 6 and 7 is relatively weak, even though these compounds mainly take the form of aromatic multilayered foldamers. (C) 2011 Elsevier Ltd. All rights reserved.
[EN] INHIBITORS OF HEPATITIS C VIRUS RNA-DEPENDENT RNA POLYMERASE, AND COMPOSITIONS AND TREATMENTS USING THE SAME<br/>[FR] INHIBITEURS DE L'ARN POLYMERASE ARN-DEPENDANTE DU VIRUS DE L'HEPATITE C ET COMPOSITIONS ET TRAITEMENTS UTILISANT CETTE POLYMERASE
申请人:PFIZER
公开号:WO2003095441A1
公开(公告)日:2003-11-20
Compounds of formula (I) are hepatitis C virus (HCV) RNA-dependent RNA polymerase (RdRp) inhibitors, and are useful in therapeutic and prophylactic treatment of persons infected with hepatitis C virus.
Copper catalyzed coupling of aryl chlorides, bromides and iodides with amines and amides
作者:Hanhui Xu、Christian Wolf
DOI:10.1039/b823407h
日期:——
A copper(I) catalyzed procedure for carbon–nitrogen bond formation utilizing aryl halides and either amines, including amino acids and diphenylamine, or aliphatic and aromatic amides is described.
Reductive<i>N</i>-Monoalkylation of Primary Aromatic Amines
作者:Giancarlo Verardo、Angelo G. Giumanini、Paolo Strazzolini、Marco Poiana
DOI:10.1055/s-1993-25813
日期:——
Primary aromatic amines 1 with a variety of ring substituents are easily converted to their N-monoalkyl derivatives 3 by a simple variation of the sodium borohydride/sulfuric acid/carbonyl compound procedure previously described for their N-permethylations. The procedure is suitable for the α-monodeuterium labelling of the new N-substituent.
Inhibitors of hepatitis C virus RNA-dependent RNA polymerase, and compositions and treatments using the same
申请人:Agouron Pharmaceuticals, Inc.
公开号:US20040023958A1
公开(公告)日:2004-02-05
Compounds of formula I are hepatitis C virus (HCV) RNA-dependent RNA polymerase (RdRp) inhibitors, and are useful in therapeutic and prophylactic treatment of persons infected with hepatitis C virus.
1
式 I 的化合物是丙型肝炎病毒(HCV)RNA 依赖性 RNA 聚合酶(RdRp)抑制剂,可用于丙型肝炎病毒感染者的治疗和预防。
1