Enantioselective hydrogen atom transfer to α-sulfonyl radicals controlled by selective coordination of a chiral Lewis acid to an enantiotopic sulfonyl oxygen
摘要:
Enantioselective hydrogen atom transfer to a-sulfonyl radicals generated from the alkyl radical addition to 2-propenyl and 1-phenylethenyl sulfones in the presence of chiral Lewis acids affords products with high enantioselectivity. The stereochemical course is discussed with the transition states involving selective coordination of a chiral Lewis acid to an enantiotopic sulfonyl oxygen. (C) 2003 Elsevier Ltd. All rights reserved.
Synthesis and preliminary evaluation of benzimidazole derivatives as antimicrobial agents
摘要:
A series of 2-alkylsulphanylbenzimidazoles was synthesised and the compounds were evaluated for their in vitro antimicrobial activity. The structures of the compounds were confirmed by H-1-NMR and IR data, and their purity by elemental analysis. Antimycobacterial activities against Mycobacterium tuberculosis and non-tuberculous mycobacteria as well as antifungal activities against Candida albicans, Candida tropicalis, Candida krusei, Candida glabrata, Trichosporon beigelii, Trichophyton mentagrophytes and Aspergillus fumigatus were expressed as the corresponding MIC values. The substances exhibited appreciable antimycobacterial activity, in particular, against non-tuberculous mycobacteria. The activity of the most active compound in the set, 3,5-dinitro derivative 4t, exceeded that of the standard isoniazide against M. kansasii and M. avium. The antifungal activities of the compounds were relatively low. A weak antifungal effect was observed against the dermatophyte Trichophyton mentagrophytes. None of the compounds showed significant inhibitory activity against yeasts. (C) 2002 Editions scientifiques et medicales Elsevier SAS. All rights reserved.
The present invention provides compounds useful as inhibitors of c-Met tyrosine kinase. The invention also provides pharmaceutically acceptable compositions comprising the compounds of the invention and methods of using the compositions in the treatment of various proliferative disorders.
Inhibiting germination of clostridium perfringens spores to reduce necrotic enteritis
申请人:The Board of Regents of the Nevada System of Higher Education on Behalf of the University of Nevada
公开号:US10945996B2
公开(公告)日:2021-03-16
Provided herein are materials and methods useful for reducing, preventing, and/or inhibiting germination of C. perfringens spores, including methods for inhibiting C. perfringens germination to reduce necrotizing enteritis (NE, also referred to as necrotic enteritis) in animals. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
Angelini, Annali di Chimica, 1955, vol. 45, p. 162,164
作者:Angelini
DOI:——
日期:——
Lee, Tae Ryong; Kim, Kyongtae, Journal of Heterocyclic Chemistry, 1989, vol. 26, p. 747 - 751
作者:Lee, Tae Ryong、Kim, Kyongtae
DOI:——
日期:——
Inhibiting Germination of Clostridium Perfringens Spores to Reduce Necrotic Enteritis
申请人:Abel-Santos Ernesto
公开号:US20180000793A1
公开(公告)日:2018-01-04
Provided herein are materials and methods useful for reducing, preventing, and/or inhibiting germination of
C. perfringens
spores, including methods for inhibiting
C. perfringens
germination to reduce necrotizing enteritis (NE, also referred to as necrotic enteritis) in animals. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.