Synthesis of some novel 1,2,4-triazole and 1,3,4-oxadiazole derivatives of biological interest
摘要:
In this study, a series of novel [1,2,4]-triazolo-[1,3,4]oxadiazole (8), [1,2,4]-triazolo-[1,3,4]oxadiazole thioethers (9a-b), [1,2,4]-triazolo-[1,3,4]oxadiazole arylidines (10a-g), and bis[1,2,4]-triazole (11) derivatives were prepared with the objective of developing better antimicrobial activity. The structures of the compounds were elucidated by spectral analysis. The newly synthesized compounds (8), (9a-b), (10a-g), and (11) were screened for their antimicrobial activity. Among all the tested compounds (10b) shows significant antibacterial activity.
Synthesis of some novel 1,2,4-triazole and 1,3,4-oxadiazole derivatives of biological interest
摘要:
In this study, a series of novel [1,2,4]-triazolo-[1,3,4]oxadiazole (8), [1,2,4]-triazolo-[1,3,4]oxadiazole thioethers (9a-b), [1,2,4]-triazolo-[1,3,4]oxadiazole arylidines (10a-g), and bis[1,2,4]-triazole (11) derivatives were prepared with the objective of developing better antimicrobial activity. The structures of the compounds were elucidated by spectral analysis. The newly synthesized compounds (8), (9a-b), (10a-g), and (11) were screened for their antimicrobial activity. Among all the tested compounds (10b) shows significant antibacterial activity.
Visible-Light Photoredox-Catalyzed Giese Reaction: Decarboxylative Addition of Amino Acid Derived α-Amino Radicals to Electron-Deficient Olefins
作者:Anthony Millet、Quentin Lefebvre、Magnus Rueping
DOI:10.1002/chem.201602257
日期:2016.9.12
A tin‐ and halide‐free, visible‐light photoredox‐catalyzed Giese reaction was developed. Primary and secondary α‐amino radicals were generated readily from aminoacids in the presence of catalytic amounts of an iridium photocatalyst. The reactivity of the α‐amino radicals has been evaluated for the functionalization of a variety of activated olefins.
mild approach for the decarboxylative aminomethylation of aryl sulfonates by the combination of photoredox and nickel catalysis through C−Obondcleavage is described for the first time. A wide range of aryl triflates as well as aryl mesylates, tosylates and alkenyl triflates afford the corresponding products in good to excellent yields.
Syntheses and Biological Activities of 3-[4-(Alkoxycarbonyl)phenyl]sydnones and their Derivatives
作者:Panchaling P. Pattanashetti、Ravindra K. Tikare、Devaraddi B. Dambal、Bharati V. Badami、Gurubasav S. Puranik
DOI:10.1002/ardp.19843170112
日期:——
Four new 3‐[4‐(alkoxycarbonyl)phenyl]sydnones have been synthesised. The hydrazide 4 is condensed with various aromatic aldehydes to obtain the corresponding Schiff bases. Antimicrobial activities of the sydnones and some Schiff bases are reported. Mass spectral fragmentation of 3[4‐(ethoxycarbonyl)phenyl]sydnone is discussed.
Visible-Light Photoredox-Catalyzed Intermolecular α-Aminomethyl/Carboxylative Dearomatization of Indoles with CO<sub>2</sub> and α-Aminoalkyl Radical Precursors
作者:Wanxu Gao、Qi Yang、Han Yang、Yang Yao、Junxue Bai、Jianwei Sun、Song Sun
DOI:10.1021/acs.orglett.3c03755
日期:2024.1.19
α-aminomethyl/carboxylative dearomatization of indoles with CO2 and α-aminoalkyl radical precursors, affording a series of functionalized indoline-3-carboxylic acids and lactams in good yields with high regioselectivity. This multicomponent reaction provides a green and facile method for the synthesis of diverse functionalized indolines by using CO2 as the carboxylic and carbonyl source.
TEMPO/O2 Synergistically Mediated BiBrO‐Photocatalyzed Decarboxylative Phosphorylation of N‐Arylglycines
作者:Wen-Tao Ouyang、Hong-Tao Ji、Yuan-Yuan Liu、Ting Li、Yan-Fang Jiang、Yu-Han Lu、Jun Jiang、Wei-Min He
DOI:10.1002/chem.202304234
日期:——
The TEMPO/air double-mediated BiBrO–photocatalyzed semi-heterogeneous decarboxylative phosphorylation of N-arylglycines with diarylphosphine oxides was developed. Various α-amino phosphinoxides can be efficiently synthesized.