Chemoselective oxidation of 1-alkenylisatins with m-chloroperbenzoic acid. Synthesis of new derivatives of isatoic anhydride
摘要:
Oxidation of alkyl- and alkenylisatins with m-chloroperbenzoic acid proceeds with high chemoselectivity leading to the formation of 1-substituted isatoic anhydrides (benzo[d][1,3]oxazine-2,4-diones) without epoxidation of the double bond of the alkenyl substituent. This result is in accordance with the data of DFT quantum chemical calculations using the B3LYP functional in conjunction with the basis set of atomic orbitals 6-31G(d,p). The structure of the synthesized heterocyclic compounds was proved by NMR and X-ray diffraction data.
Identification and development of the 1,4-benzodiazepin-2-one and quinazoline-2,4-dione scaffolds as submicromolar inhibitors of HAT
作者:Rachel L. Clark、Carol J. Clements、Michael P. Barrett、Simon P. Mackay、Rajendra P. Rathnam、George Owusu-Dapaah、John Spencer、Judith K. Huggan
DOI:10.1016/j.bmc.2012.08.049
日期:2012.10
A library of 1,4-benzodiazepines has been synthesised and evaluated for activity against Trypanosoma brucei, a causative parasite of Human African Trypanosomiasis (HAT). The most potent of these derivatives has an MIC value of 0.97 μM. Herein we report the design, synthesis and biological evaluation of the abovementioned compounds.
[EN] PYRIMIDO [4,5-B]QUINOLINE-4,5 (3H,10H)-DIONES AS NONSENSE MUTATION SUPPRESSORS<br/>[FR] PYRIMIDO [4,5-B]QUINOLINE-4,5 (3H,10H)-DIONES UTILISÉS EN TANT QUE SUPPRESSEURS DE MUTATION NON-SENS
申请人:NOVARTIS AG
公开号:WO2014091446A1
公开(公告)日:2014-06-19
The invention relates to compound of the formula (I); or a salt thereof, wherein the substituents are as defined in the specification; to its preparation, to its use as medicament and to medicaments comprising it.
The one-pot total synthesis of evodiamine and itsanalogues is achieved using a three-component reaction. Through continuous biscyclization, various readily available substrates with good functional group tolerance were easily incorporated into biologically active quinazolinocarboline backbones. The use of triethoxymethane as a cosolvent was crucial for this quick and straightforward transformation
作者:Can Li、Cong-Shuai Wang、Tian-Zhen Li、Guang-Jian Mei、Feng Shi
DOI:10.1021/acs.orglett.8b03604
日期:2019.2.1
A Brønstedacid-catalyzed (4 + 3) cyclization of N,N′-cyclic azomethine imines with isatoic anhydrides has been discovered, which constructs seven-membered nitrogenous heterocyclic frameworks with overall high yields (up to 98% yield). This reaction represents a rarely reported (4 + 3) cyclization of N,N′-cyclic azomethine imines, which involves the reassembly of a C–N bond. In addition, this reaction
Solid-phase combinatorial synthesis of 4-hydroxyquinolin-2(1H)-ones
作者:Mui Mui Sim、Cheng Leng Lee、A. Ganesan
DOI:10.1016/s0040-4039(98)01320-3
日期:1998.8
cleavage with concomitant decarboxylation produces β-keto nitriles. In the case of isatoic anhydrides, the resin-bound acylated intermediates undergo cyclative cleavage upon heating, leading to 4-hydroxyquinolin-2(1H)-ones.