Design, semi-synthesis and molecular docking of new antibacterial and antibiofilm triazole conjugates from hydroxy-triterpene acids and fluoroquinolones
作者:Besma Boulila、Mabrouk Horchani、Raphael Duval、Mohamed Othman、Adam Daïch、Hichem Ben Jannet、Anis Romdhane、Ata Martin Lawson
DOI:10.1039/d3nj02922k
日期:——
from isolated pentacyclic triterpene acids as natural products from olive pomace (Olea europaea L.). These conjugates were synthesized via a last step of Cu-catalyzed azide–alkyne cycloaddition (CuAAC) between propargylated quinolone/fluoroquinolones (QN/FQNs) and MA/OA azides to achieve new triazole derivatives in overall excellent yields. The latter hybrids were screened in vitro for their antibacterial
以橄榄果渣 ( Olea europaea L.) 的天然产物分离五环三萜酸为原料,设计并半合成了一系列具有有效抗菌和抗生物膜活性的山楂酸 (MA) 和齐墩果酸 (OA) 类似物。这些缀合物是通过铜催化的叠氮化物-炔环加成 (CuAAC) 的最后一步合成的,在炔丙基化喹诺酮/氟喹诺酮 (QN/FQNs) 和 MA/OA 叠氮化物之间进行,以总体优异的收率获得新的三唑衍生物。后者的杂交体在体外筛选其对两种革兰氏阳性菌(金黄色葡萄球菌和粪肠球菌)和两种革兰氏阴性菌(金黄色葡萄球菌和粪肠球菌)的抗菌和抗生物膜活性。大肠杆菌和铜绿假单胞菌)。结果表明,一些山楂酸衍生物对所有测试菌株均表现出显着的活性,其 MIC 值在 3.25–30 μg mL -1范围内。此外,评估的化合物具有中度至显着的抗生物膜活性,对金黄色葡萄球菌生物膜形成的抑制百分比高达 68.75% 。使用合成化合物抗菌活性对接研究的分
4-HYDROXYQUINOLINE-3-CARBOXAMIDES AND HYDRAZIDES AS ANTIVIRAL AGENTS
申请人:Pharmacia & Upjohn Company LLC
公开号:EP1042295B1
公开(公告)日:2005-09-07
Direct C–N bond cleavage of N-vinyl or N-allyl arylamines: a metal-free strategy for N-devinylation and N-deallylation
作者:Shilpi Balgotra、Vunnam Venkateswarlu、Ram A. Vishwakarma、Sanghapal D. Sawant
DOI:10.1016/j.tetlet.2015.05.042
日期:2015.7
A simple and convenient N-devinylation and N-deallylation strategy for N-vinyl and N-allyl arylamines in the presence of TFA/oxone is presented with the formation of selective ortho-hydroxylated and N-triflu-oroacylated arylamine product in good yields. This method is important for protection/deprotection of arylamines in organic synthesis and useful as a medicinal chemistry tool at late stage modifications in drug discovery programs. (c) 2015 Elsevier Ltd. All rights reserved.
Synthesis and biological evaluation of new nucleosides derived from trifluoromethoxy-4-quinolones
作者:Kristína Plevová、Katarína Briestenská、Françoise Colobert、Jela Mistríková、Viktor Milata、Frédéric R. Leroux
DOI:10.1016/j.tetlet.2015.07.031
日期:2015.9
The synthesis of new nucleoside derivatives from 6- and 7-trifluoromethoxy-4-quinolones is described. The present synthesis is a combination of the Gould–Jacobs reaction for the preparation of 4-quinolones and a modified Vorbrüggen reaction for the construction of nucleoside derivatives. The target compounds were tested against murine gammaherpesvirus MHV-68 type.
High affinity central benzodiazepine receptor ligands: synthesis and structure–activity relationship studies of a new series of pyrazolo[4,3- c ]quinolin-3-ones
tested as central benzodiazepinereceptorligands. Results from structure-affinity relationship studies were in full agreement with previously proposed pharmacophore models and, in addition, quantitative structure-activity analysis gave further significant insight into the main molecular determinants of high benzodiazepinereceptoraffinity. The intrinsic activity of some active ligands was also determined