Structure–activity relationship studies of 1-(4-chloro-2,5-dimethoxyphenyl)-3-(3-propoxypropyl)thiourea, a non-nucleoside reverse transcriptase inhibitor of human immunodeficiency virus type-1
摘要:
The reverse transcriptase (RT) of the human immunodeficiency virus type-1 (HIV-1) is still a prime target for drug development due to the continuing need to block drug-resistant RT mutants by new inhibitors. We have previously identified 1-(4-chloro-2,5-dimethoxyphenyl)-3-(3-propoxypropyl)thiourea, compound 1, as a potent RI inhibitor from an available chemical library. Here, we further modified this compound to study structure activity relationships when replacing various groups in the molecule. Different functional groups were systematically introduced on the aromatic ring and the aliphatic chain of the compound was modified. The effect of these modifications on viral infectivity was then evaluated. The most potent compound found was propyl 4-(amino-N-(4-chloro-2,5-dimethoxyphenyl)methanethioamino)butanoate, 45c, which inhibited infectivity with a calculated IC50 of about 1.1 mu M. Docking studies identified potential important interactions between the top scoring ligands and HIV-1 RT, and the predicted relative affinity of the ligands was found to be in agreement with the experimental results. (C) 2010 Elsevier Masson SAS. All rights reserved.
Sur les quinones dérivées du diphényle formées par oxydation d'éthers de benzohydroquinones substiuées
作者:Th. Posternak、W. Alcalay、R. Luzzati、A. Tardent
DOI:10.1002/hlca.19480310232
日期:——
Les quinones obtenues paroxydation d'éthers de benzhydroquinones substituées dérivent de la diphénoquinone-3,6 et noncomme on I'avait indiqué autrefois, de la diphénoquinone-6,6′.
A method for producing a biaryl compound, comprising reacting an aromatic organic compound with at least one compound selected from the group consisting of aromatic organoboron compounds and boroxine compounds, in the presence of a zero-valent nickel catalyst, phosphine ligand and base.
A method for producing a biaryl compound, comprising reacting an aromatic organic compound with at least one compound selected from the group consisting of aromatic organoboron compounds and boroxine compounds, in the presence of a zero-valent nickel catalyst, phosphine ligand and base.
Herein, we synthesized pillar[6]arene derivatives having alternate methylene and nitrogen bridges. Owing to the charge transfer emission, the solid-state photoluminescence quantum yield (ΦPL) was enhanced compared with that of the parent pillar[6]arene (ΦPL=0.063→ΦPL=0.36). Furthermore, it displayed a turn-off sensing toward nitrobenzene (NB) vapor; a fluorescence quenching was observed when exposed
Asymmetric Synthesis of α-Aryl Amino Acids; Aryne-Mediated Diastereoselective Arylation
作者:Elizabeth P. Jones、Peter Jones、Anthony G. M. Barrett
DOI:10.1021/ol1030469
日期:2011.3.4
An aryne-mediated alpha-arylation reaction of Schollkopf's bis-lactim ether is described. Arynes were generated via an ortho-lithiation approach, affording syn-arylated products in up to 94:6 dr with moderate to good yields and excellent regioselectivities. Hydrolysis provided a variety of substituted arylglycines containing a range of functional groups without racemization.