Design, synthesis and biological evaluation of benzo[1.3.2]dithiazolium ylide 1,1-dioxide derivatives as potential dual cyclooxygenase-2/5-lipoxygenase inhibitors
摘要:
3-(4-Bromophenyl)-6-nitrobenzo[1.3.2]dithiazolium ylide 1,1-dioxide (5) was discovered as a new prototype for dual inhibitors of cyclooxygenase-2 (COX-2) and 5-lipoxygenase (5-LOX). Thus, the structure-activity relationships of benzo[1.3.2]dithiazolium ylide 1,1-dioxide skeleton were carried out. The 6-NO2 group played an essential role in the inhibitory activity. In addition, moderate-sized lipophilic substituents at the para-position of the 3-aryl moiety were required for dual COX-2/5-LOX inhibitory activity. Among the identified potent dual inhibitors, 3-(4-tbutylphenyl) derivative 30c (IC50 values of 0.27 mu M and 0.30 mu M against COX-2 and 5-LOX, respectively) and 3-(4-biphenyl) derivative 30f (IC50 values of 0.50 mu M and 0.15 mu M against COX-2 and 5-LOX, respectively) were the most potent dual COX-2/5-LOX inhibitors. Intraperitoneal administration of 30c at 100 mg/kg demonstrated potent acute anti-inflammatory activity. As a result, benzo[1.3.2]dithiazolium ylide 1,1-dioxide represented a novel scaffold for the exploitation in developing dual COX-2/5-LOX inhibitors. (C) 2011 Elsevier Ltd. All rights reserved.
本文报道了金催化的邻炔基苯磺酰胺与芳基重氮盐的双官能化。在用蓝色 LED 照射后,苯磺舒坦产物通过氨基芳基化形成,伴随着 N 2的释放。在没有辐照的情况下,芳基重氮盐作为有效的亲电试剂,促进乙烯基-Au(I) 中间体的亲电脱氢,然后互变异构化得到N-芳基取代的 α-亚氨基 ( E )-腙。6 -endo-dig和 5 -exo-dig环化的区域选择性非常好。
Functionalization of α‐C(sp
<sup>3</sup>
)−H Bonds in Amides Using Radical Translocating Arylating Groups
作者:Niklas Radhoff、Armido Studer
DOI:10.1002/anie.202013275
日期:2021.2.15
α‐C−H arylation of N‐alkylamides using 2‐iodoarylsulfonyl radical translocating arylating (RTA) groups is reported. The method allows the construction of α‐quaternary carbon centers in amides. Various mono‐ and disubstituted RTA‐groups are applied to the arylation of primary, secondary, and tertiary α‐C(sp3)−H‐bonds. These radical transformations proceed in good to excellent yields and the cascades
[EN] METHODS FOR PREPARING FUSED BICYCLIC 2, 4-DIAMINOPYRIMIDINE DERIVATIVES<br/>[FR] PROCÉDÉS DE PRÉPARATION DE DÉRIVÉS DE 2, 4-DIAMINOPYRIMIDINE BICYCLIQUES FUSIONNÉS
申请人:CEPHALON INC
公开号:WO2016105529A1
公开(公告)日:2016-06-30
The present disclosure is directed to improved methods useful for the preparation of, for example, 2-[[5-chloro-2-[[(6S)-6-[4-(2-hydroxyethyl)piperazin-l-yl]-l-methoxy-6,7,8,9- tetrahydro-5Hbenzo[7]annulen-2-yl]amino]pyrimidin-4-yl]amino]-N-methyl-benzamide (CEP- 37440).
METHODS FOR PREPARING FUSED BICYCLIC 2, 4-DIAMINOPYRIMIDINE DERIVATIVES
申请人:CEPHALON, INC.
公开号:US20170369451A1
公开(公告)日:2017-12-28
The present disclosure is directed to improved methods useful for the preparation of, for example, 2-[[5-chloro-2-[[(6S)-6-[4-(2-hydroxyethyl)piperazin-1-yl]-1-methoxy-6,7,8,9-tetrahydro-5Hbenzo[7]annulen-2-yl]amino]pyrimidin-4-yl]amino]-N-methyl-benzamide (CEP-37440).
PROCESS FOR PREPARATION OF CARBONYL COMPOUND AND PRO-OXIDANT FOR PREPARATION OF CARBONYL COMPOUND
申请人:Ishihara Kazuaki
公开号:US20100041917A1
公开(公告)日:2010-02-18
The invention provides a process for the preparation of a carbonyl compound in high efficiency by oxidizing an alcohol. The process for the preparation of a carbonyl compound of the present invention includes a step of oxidizing an alcohol in the presence of a compound of the formula (I) or a derivative or a salt thereof, and an oxidant,
wherein R
1
and R
2
independently represent hydrogen, a halogen, a nitro or acidic group, or an alkyl or alkoxy group, each of which optionally has a substituent, or R
1
and R
2
combine the two carbon atoms to which they are boned to form an aromatic ring.
NEGATIVE DISPERSION RETARDATION PLATE AND ACHROMATIC CIRCULAR POLARIZER
申请人:Geivandov Arthur
公开号:US20120113380A1
公开(公告)日:2012-05-10
The present invention relates generally to the field of organic chemistry and particularly to the nematic lyotropic liquid crystal solution and negative dispersion retardation plate for application in 3D liquid crystal displays. The negative dispersion retardation plate comprises a substrate, and at least one optically anisotropic retardation layer comprising a multi-component guest-host composition coated onto the substrate.