New pyridine derivatives as potential antimicrobial agents
摘要:
A set of pyridine derivatives bearing a substituted alkylthio chain or a piperidyl ring in position 2 or 4 were synthesized, and their antimycobacterial and antifugal activities were evaluated. Chemical structures were confirmed by IR and NMR data, and by elemental analysis. Minimum inhibitory concentrations (MIC) were used for the evaluation of microbiological activity in vitro. The compounds were moderately active against both Mycobacterium tuberculosis and nontuberculous mycobacteria. The most active compound was 2-cyanomethylthiopyridine-4-carbonitrile (7) with MTC against Mycobacterium kansasii in the range of 8-4 mu mol/l. The antifungal activities of the compounds were relatively low. (C) 1999 Elsevier Science S.A. All rights reserved.
A study of the photochemically induced reaction of pyridine-2,4-dicarbonitrile with primary and secondary amines. A direct synthesis of aminocyano-pyridines
作者:Rosanna Bernardi、Tullio Caronna、Sergio Morrocchi、Maurizio Ursini、Bruno M. Vittimberga
DOI:10.1039/p19900000097
日期:——
A novel synthesis of alkylaminopyridinecarbonitriles by a photoinitiated substitution reaction between pyridine-2,4-dicarbonitrile and certain amines is described. The mechanism is discussed.
A set of pyridine derivatives bearing a substituted alkylthio chain or a piperidyl ring in position 2 or 4 were synthesized, and their antimycobacterial and antifugal activities were evaluated. Chemical structures were confirmed by IR and NMR data, and by elemental analysis. Minimum inhibitory concentrations (MIC) were used for the evaluation of microbiological activity in vitro. The compounds were moderately active against both Mycobacterium tuberculosis and nontuberculous mycobacteria. The most active compound was 2-cyanomethylthiopyridine-4-carbonitrile (7) with MTC against Mycobacterium kansasii in the range of 8-4 mu mol/l. The antifungal activities of the compounds were relatively low. (C) 1999 Elsevier Science S.A. All rights reserved.
Synthesis and Biological Activity of Piperidinothiosemicarbazones Derived from Aminoazinecarbonitriles
significant activity against the standard strain (minimum inhibitory concentration (MIC) 2–4 μg/mL) and even greater activity against the resistant M. tuberculosis strain (MIC 0.5–4 μg/mL). Additionally, the effects of compounds 8–9 were entirely selective (MIC toward other microorganisms ≥ 1000 μg/mL) and non-toxic (IC50 to HaCaT cells 5.8 to >50 μg/mL). The antimycobacterial activity of pyrazine