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.
A palladium-catalyzed one-pot procedure for the synthesis of aryl ketones has been developed. Triazine esters when coupled with aryl boronic acids provided aryl ketones in moderate to excellent yields (up to 95%) in the presence of 1 mol % Pd(PPh3)2Cl2 for 30 min.
Rhodium-catalyzed Synthesis of 1-Arylisoquinoline Derivatives through Annulative Coupling of 3-Aryl-1,2-benzisoxazoles and Alkynes
作者:Teppei Noguchi、Yuji Nishii、Masahiro Miura
DOI:10.1246/cl.170618
日期:2017.10.5
annulative coupling of 3-aryl-1,2-benzisoxazoles and alkynes efficiently proceeds in the presence of a Cp*Rh(III) catalyst to produce 2-(1-isoquinolinyl)phenols of interest in medicinal chemistry as well as materials chemistry. The products may also be useful precursors of quinoline-based bidentateligands.
Ni and Cu-catalyzed one pot synthesis of unsymmetrical 1,3-di(hetero)aryl-1H-indazoles from hydrazine, o-chloro (hetero)benzophenones, and (hetero)aryl bromides
作者:Carson Wiethan、Christopher M. Lavoie、Andrey Borzenko、Jillian S. K. Clark、Helio G. Bonacorso、Mark Stradiotto
DOI:10.1039/c7ob00841d
日期:——
cyclization of in situ generated ortho-chlorobenzophenone hydrazone derivatives, to afford 3-(hetero)aryl-1H-indazoles, is documented for the first time. The product 1H-indazoles can be transformed subsequently in a one-pot procedure into 1,3-di(hetero)aryl-1H-indazoles via copper-catalyzed N-arylation with (hetero)aryl bromides.
TFAA/H<sub>3</sub>PO<sub>4</sub>-Mediated C-2 Acylation of Thiophene: A Direct Synthesis of Known and Novel Thiophene Derivatives of Pharmacological Interest
作者:P. Bindu、Shravan Reddy Naini、K. Shanmukha Rao、P. K. Dubey、Sarbani Pal
DOI:10.1002/jhet.1106
日期:2014.5
aliphatic and aromatic carboxylic acids were reacted with thiophene in the presence of trifluoroaceticanhydride and H3PO4 to give a variety of acylated thiophenes in good to excellent yields. The methodology was used to prepare known nonsteroidal anti‐inflammatory drug‐based novel compounds of potential pharmacological significances. Molecular modeling studies were carried out by using nonsteroidal
在三氟乙酸酐和H 3 PO 4的存在下,许多脂肪族和芳香族羧酸与噻吩反应,以良好或优异的收率得到各种酰化的噻吩。该方法用于制备具有潜在药理学意义的已知的基于非甾体抗炎药的新型化合物。分子建模研究是通过使用基于非甾体抗炎药的噻吩衍生物评估其环氧化酶在计算机上的抑制潜力而进行的。在对接研究和随后的体外测定的基础上,基于消炎痛的噻吩衍生物被鉴定为具有平衡选择性的新型环氧合酶2抑制剂。
In Situ Generation of Palladium Nanoparticles: Ligand-Free Palladium Catalyzed Pivalic Acid Assisted Carbonylative Suzuki Reactions at Ambient Conditions
作者:Qing Zhou、Shaohua Wei、Wei Han
DOI:10.1021/jo402366p
日期:2014.2.7
selective carbonylative Suzuki reactions of aryl iodides with arylboronic acids using an in situ generated nanopalladium system furnished products in high yields. The reactions were performed under ambientconditions and in the absence of an added ligand. The key to success is the addition of pivalic acid, which can effectively suppress undesired Suzuki coupling. The synthesis can be easily scaled up, and