Design, synthesis and biological evaluation of novel non-azole derivatives as potential antifungal agents
摘要:
A series of 3-substituted quinazolinones, 2-substituted quinoxalines and 2-substituted benzopyrans were synthesized and evaluated for their antifungal activity in vitro. The new compounds revealed excellent in vitro antifungal activity with broad spectrum. The structure-activity relationships (SARs) of the derivatives were analyzed. Compound 9A2 exhibits better antifungal activity against 5 tested fungi in vitro than fluconazole, especially against Trichophyton rubrum and Microsporum gypseum. This study provides a series of novel lead compounds for the development of non-azole antifungal agents. (C) 2015 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
KHMDS Enhanced SmI2-Mediated Reformatsky Type α-Cyanation
摘要:
A novel combination of SmI2, KHMDS, and TsCN can be utilized to introduce a cyano group into structurally diverse and highly sensitive 2-alkyl-chroman-4-ones. Subsequent oxidation allows the formed 2-alkyl-3-cyanochromones to be isolated in yields ranging from 49 to 77%. In addition, alpha-bromoketones and esters were found to undergo equally effective alpha-cyanation.
Synthesis of Flavanone and Quinazolinone Derivatives from the Ruthenium-Catalyzed Deaminative Coupling Reaction of 2′-Hydroxyaryl Ketones and 2-Aminobenzamides with Simple Amines
作者:Krishna Gnyawali、Pandula T. Kirinde Arachchige、Chae S. Yi
DOI:10.1021/acs.orglett.1c03870
日期:2022.1.14
deaminative coupling reaction of 2′-hydroxyaryl ketones with simple amines to form 3-substituted flavanone products. The analogous deaminative coupling reaction of 2-aminobenzamides with branched amines directly formed 3,3-disubstituted quinazolinone products. The catalytic method efficiently installs synthetically useful flavanone and quinazolinone core structures without employing any reactive reagents.
Synthesis and Evaluation of Substituted Chroman-4-one and Chromone Derivatives as Sirtuin 2-Selective Inhibitors
作者:Maria Fridén-Saxin、Tina Seifert、Marie Rydén Landergren、Tiina Suuronen、Maija Lahtela-Kakkonen、Elina M. Jarho、Kristina Luthman
DOI:10.1021/jm3005288
日期:2012.8.23
A series of substituted chromone/chroman-4-one derivatives has been synthesized and evaluated as novel inhibitors of SIRT2, an enzyme involved in aging-related diseases, e.g., neurodegenerative disorders. The analogues were efficiently synthesized in a one-step procedure including a base-mediated aldol condensation using microwave irradiation. The most potent compounds, with inhibitory concentrations in the low micromolar range, were substituted in the 2-, 6-, and 8-positions. Larger, electron-withdrawing substituents in the 6- and 8-positions were favorable. The most potent inhibitor of SIRT2 was 6,8-dibromo-2-pentylchroman-4-one with an IC50 of 1.5 mu M. The synthesized compounds show high selectivity toward SIRT2 over SIRT1 and SIRT3 and represent an important starting point for the development of novel SIRT2 inhibitors.
Design, synthesis and biological evaluation of novel non-azole derivatives as potential antifungal agents
A series of 3-substituted quinazolinones, 2-substituted quinoxalines and 2-substituted benzopyrans were synthesized and evaluated for their antifungal activity in vitro. The new compounds revealed excellent in vitro antifungal activity with broad spectrum. The structure-activity relationships (SARs) of the derivatives were analyzed. Compound 9A2 exhibits better antifungal activity against 5 tested fungi in vitro than fluconazole, especially against Trichophyton rubrum and Microsporum gypseum. This study provides a series of novel lead compounds for the development of non-azole antifungal agents. (C) 2015 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
KHMDS Enhanced SmI<sub>2</sub>-Mediated Reformatsky Type α-Cyanation
A novel combination of SmI2, KHMDS, and TsCN can be utilized to introduce a cyano group into structurally diverse and highly sensitive 2-alkyl-chroman-4-ones. Subsequent oxidation allows the formed 2-alkyl-3-cyanochromones to be isolated in yields ranging from 49 to 77%. In addition, alpha-bromoketones and esters were found to undergo equally effective alpha-cyanation.