[EN] MACROCYCLIC BROAD SPECTRUM ANTIBIOTICS<br/>[FR] ANTIBIOTIQUES MACROCYCLIQUES À LARGE SPECTRE
申请人:RQX PHARMACEUTICALS INC
公开号:WO2018149419A1
公开(公告)日:2018-08-23
Provided herein are antibacterial compounds, wherein the compounds in some embodiments have broad spectrum bioactivity. In various embodiments, the compounds act by inhibition of bacterial type 1 signal peptidase (SpsB), an essential protein in bacteria. Pharmaceutical compositions and methods for treatment using the compounds described herein are also provided.
A facile approach for the synthesis of 3,4‐dihydropyrimidin‐2(1H)‐ones was developed by a tandem multi‐component reaction (MCR) in onepot. This approach involves two steps, lipase‐catalyzed in situ generation of acetaldehyde and the Biginelli reaction in turn. Several control experiments were performed using acetaldehydes directly to explore the possible mechanism of this procedure. Moreover, owing
Fabrication of porous ultrathin carbon nitride nanosheet catalysts with enhanced photocatalytic activity for N- and O-heterocyclic compound synthesis
作者:Yancong Li、Jiliang Ma、Zhendong Liu、Dongnv Jin、Gaojie Jiao、Yanzhu Guo、Qiang Wang、Jinghui Zhou、Runcang Sun
DOI:10.1039/d0nj05101b
日期:——
simple and efficient photocatalytic method for the synthesis of dihydropyrimidinones (DHPMs) and their derivatives via porous ultrathin carbon nitride nanosheets (p-CNNs) without solvents was demonstrated. The yields of 3,4-dihydropyrimidin-2(1H)-ones/thiones and their derivatives were up to 97.0%. Furthermore, the yield of 5-ethoxycarbonyl-6-methyl-4-phenyl-3,4-dihydropyrimidin-2(1H)-one in the 10th
通过无溶剂的多孔超薄氮化碳纳米片(p-CNNs)合成了一种简单高效的光催化方法,用于合成二氢嘧啶酮(DHPM)及其衍生物。3,4-二氢嘧啶-2(1 H)-酮/硫酮及其衍生物的产率高达97.0%。此外,5-乙氧基羰基-6-甲基-4-苯基-3,4-二氢嘧啶-2(1 H)-第10个周期中的1个保留了其第1个值的98.9%。考虑到环境和经济利益,这项工作表现出各种优点,包括优异的产量,环境友好性,便宜性以及避免使用溶剂和金属基光催化剂。此外,p-CNN的优异性能和对环境无害的反应体系也通过光催化合成12-苯基-9,9-二甲基-8,9,10,12-四氢苯并[ a ] xanthen-11进行了检验。-一个和5-苯基-1(4-甲氧基苯基)-3 [(4-甲氧基-苯基)-氨基] -1 H-吡咯-2(5 H)-一个。这项工作为在温和的反应条件下使用无金属的光催化剂进行三组分反应铺平了道路。
One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones Catalyzed by Acidic Ionic Liquids Under Solvent-Free Conditions
作者:Jianzhou Gui、Dan Liu、Chan Wang、Feng Lu、Jingzhao Lian、Heng Jiang、Zhaolin Sun
DOI:10.1080/00397910902774042
日期:2009.9.8
Abstract The acidic ionic liquids were new catalysts for the one-pot Biginelli reaction coupling of aldehyde, 1,3-dicarbonyl compound, and urea to afford the corresponding dihydropyrimidinones in good yields under solvent-freeconditions. The catalysts could be recycled and reused five times without a noticeable decrease in catalytic activity.
(C<sub>5</sub>H<sub>6</sub>N<sub>4</sub>O)(C<sub>5</sub>H<sub>5</sub>N<sub>4</sub>O)<sub>3</sub>(C<sub>5</sub>H<sub>4</sub>N<sub>4</sub>O)[Bi<sub>2</sub>Cl<sub>11</sub>]Cl<sub>2</sub>as a simple and efficient catalyst in Biginelli reaction
作者:Xiang Zhang、Xiaoyu Gu、Yuhua Gao、Shipeng Nie、Hongfei Lu
DOI:10.1002/aoc.3590
日期:2017.4
A highly efficient and facile procedure for the one‐pot three‐component synthesis of 3,4‐dihydropyrimidin‐2‐(1H)ones/thiones from the one‐pot condensation of aldehyde, β‐dicarbonyl compound and urea/thiourea was developed. The methodology is applicable to a wide range of substrates with high yield in the presence of (C5H6N4O)(C5H5N4O)3(C5H4N4O)[Bi2Cl11]Cl2. The complex is an air‐stable, environmentally
开发了一种高效,简便的方法,该方法可通过醛,β-二羰基化合物和尿素/硫脲的一锅缩合反应一锅三组分合成3,4-二氢嘧啶-2-(1 H)酮/硫酮。该方法适用于(C 5 H 6 N 4 O)(C 5 H 5 N 4 O)3(C 5 H 4 N 4 O)[Bi 2 Cl 11 ] Cl 2。该络合物是一种对空气稳定,对环境友好且可回收的催化剂,可以有效催化Biginelli反应。该催化剂具有高催化效率和低催化剂载量,并且可以循环十次而活性损失很小。