Novel 1-[2-(Diarylmethoxy)ethyl]-2-methyl-5-nitroimidazoles as HIV-1 Non-Nucleoside Reverse Transcriptase Inhibitors. A Structure−Activity Relationship Investigation
摘要:
1-[2-(Diarylmethoxy)ethyl]-2-methyl-5-nitroimidazoles (DAMNIs) is a novel family of HIV-1 non-nucleoside reverse transcriptase inhibitors (NNRTIs) active at submicromolar concentration. Replacement of one phenyl ring of 1-[2-(diphenylmethoxy)ethyl]-2-methyl-5-nitroimidazole (4) with heterocyclic rings, such as 2-thienyl or 3-pyridinyl, led to novel DAMNIs with increased activity. In HIV-1 WT cell-based assay the racemic 1-{2-{alpha-(thiophen-2-yl)phenylmethoxylethyl}-2-methyl-5-nitroimidazole (7) (EC50 = 0.03 mu M) proved 5 times more active than compound 4. Docking experiments showed that the introduction of a chiral center would not affect the binding of both (R)-7 and (S)-7. The internal scoring function of the Autodock program calculated the same inhibition constant (K-i = 7.9 nM) for the two enantiomers. Compounds 7 (ID50 = 8.25 mu M) were found more active than efavirenz (ID50 = 25 mu M) against the viral RT carrying the K103N mutation, suggesting for these compounds a potential use in efavirenz based anti-AIDS regimens.
Oligothiophene-Linked Bisnaphthopyrans: Sequential and Temperature-Dependent Photochromism
作者:Weili Zhao、Erick M. Carreira
DOI:10.1002/chem.200600958
日期:2007.3.16
Photochromic bisnaphthopyrans linked with oligothiophenes were synthesized and their photochromic behavior studied. Sequential and temperature-dependentphotochromism was observed in the oligothiophene linked bisnaphthopyrans. The kinetics of photo and thermal processes in bisnaphthopyrans in comparison with naphthopyrans were studied. Substituent and linking effects on the photochromic properties
Continuous flow synthesis of diaryl ketones by coupling of aryl Grignard reagents with acyl chlorides under mild conditions in the ecofriendly solvent 2-methyltetrahydrofuran
作者:Chuan-Tao Zhang、Rui Zhu、Zheng Wang、Bing Ma、Adrian Zajac、Marcin Smiglak、Chun-Nian Xia、Steven L. Castle、Wen-Long Wang
DOI:10.1039/c8ra07447j
日期:——
efficient continuous flow sequential synthesis of diaryl ketones was achieved by coupling of aryl Grignard reagents with acyl chlorides in the bio-derived “green” solvent 2-methyltetrahydrofuran (2-MeTHF) undermild reaction conditions (ambient temperature, 1 hour), allowing a safe and on-demand generation of 2-(3-benzoylphenyl)propionitrile with a productivity of 3.16 g hour−1.
作者:Greg W. Ebert、Deborah R. Pfennig、Scott D. Suchan、Thomas A. Donovan
DOI:10.1016/s0040-4039(00)77593-9
日期:1993.4
We wish to report the generation of remarkablystable o-halophenlycopper reagents at room temperature by the direct oxidative addition of activated copper to o-flouro-and o-choloriodobenzene. The reagents will undergo substitution reactions with suitable organic halides at 25°C.
Synthesis and sequential photochromism of thiophene-linked bis-pyrans
作者:Xiuhong Lu、Qian Dong、Xiaochun Dong、Weili Zhao
DOI:10.1016/j.tet.2015.04.068
日期:2015.6
Novel bis[3H]-naphtho[2,1-b]pyrans 1a-1g and bis[2H]-naphtho[1,2-b]pyrans 2a-2g were prepared efficiently. Such thiophene-linked bispyrans display distinct color change under continuous UV irradiation with up to 110 am of bathochromic shift between the finally generated colored forms and initially generated forms. They also show high colorability, as well as good fatigue-resistance. (C) 2015 Elsevier Ltd. All rights reserved.