Design, synthesis, characterization, and biological evaluation of pyrido[1,2-a]pyrimidinone coumarins as promising anti-inflammatory agents
摘要:
Pursuing our recent interest regarding antimicrobial and anti-inflammatory activities of coumarin derivatives, we have synthesized a series of coumarin-linked pyridopyrimidinones by using Baylis Hillman adduct in aqueous condition with high purity. Pyrido[1,2-a]pyrimidin-2-ones are important class of heterocyclic compounds because of their use in medicinal and agro chemistry as active agents. All these newly synthesized compounds were evaluated for their antimicrobial and anti-inflammatory activity. Coumarin pyridopyrimidinones showed excellent anti-inflammatory activity against both MMP-2 and MMP-9 gelatinase zymography, whereas considerable good activity against Gram-positive and Gram-negative bacterial strains; however, antifungal activity observed in these series is more or less inactive. The active compounds of these series would be promising structural templates for the development of novel and more efficient anti-inflammatory agent.
Donor-acceptor pyran-2-ones: Absorption and fluorescence spectra of 4-substituted 2<i>H</i>-1-benzo/napthopyran-2-ones
作者:Rajesh S. Kenny、Uday C. Mashelkar
DOI:10.1002/jhet.5570430230
日期:2006.3
The absorptionspectra and emission spectra of 4-substituted2H-1-benzo/napthopyran-2-ones 3a-1 have been determined in THF and DMSO. The substituent at the 4-position of the 2H-benzo/napthopyran-2-one, establishes a compact conjugation pathway in which the pyran-2-one nucleus can act as an acceptor ring.
已经确定了在THF和DMSO中4-取代的2 H -1-苯并/萘并吡喃-2-酮3a-1的吸收光谱和发射光谱。在2 H-苯并/萘并吡喃-2-酮的4位上的取代基建立了紧密的共轭途径,其中吡喃-2-一核可充当受体环。
Effects of Base for the Efficient Synthesis of 4-Formylcoumarins and 4-Formylcarbostyrils
作者:Megharaja Holiyachi、Samundeeswari L. Shastri、Bahubali M. Chougala、Lokesh A. Shastri
DOI:10.1080/00397911.2014.981754
日期:2015.4.18
The first efficient transformation of 4-bromomethylcoumarins and 4-bromomethylcarbostyrils to 4-formylcoumarins and 4-formylcarbostyril under aqueous conditions has been achieved by modifying the Kornblum method, resulting in excellent yield. The experimental method is very simple and economical; no further purification is required and the experimental conditions have been optimized. All the isolated compounds were characterized by infrared, NMR, and mass spectroscopy, and some of the compounds have been analyzed by single-crystal x-ray analysis.
Gudimani, Parashuram; Holiyachi, Megharaja; Joshi, Shrinivas D., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2021, vol. 60, # 3, p. 418 - 432