Novel 4H-1,2,4-triazol-3-yl cycloalkanols as potent antitubercular agents
摘要:
Enzymes of shikimate pathway, dehydroquinase and shikimate kinase represent comparatively newer targets for antitubercular research. Molecular hybridization approach was implemented by integrating the essential features of inhibitors acting on these enzymes of shikimate pathway. Considering the flexibility of alicyclic ring of reported dehydroquinase (DHQ) inhibitors and triazole ring, key feature of the virtual hits of Mtb shikimate kinase, a series of structurally novel, substituted 4H-1,2,4-triazol-3-yl cycloalkanols were designed as antimycobacterial agents. Docking studies of the molecules was carried out on the enzyme DHQ. All the synthesized compounds exhibited promising activity (MIC 0.59-15.5 mu g/ml) against H(37)Rv strains of Mycobacterium tuberculosis using resazurin microtiter assay. Five of the evaluated compounds exhibit MIC < 1 mu g/ml. CC50 values indicate compounds are non-toxic, with selectivity indices >28. These compounds could serve as leads for further optimization to obtain novel antimycobacterial agents.
STRUCTURE AND PROPERTIES OF CYCLIC COMPOUNDS: XI. DISSOCIATION CONSTANTS OF THE CYANOHYDRINS OF SOME METHYLCYCLOHEXANONES
作者:Owen H. Wheeler、Jacob Z. Zabicky
DOI:10.1139/v58-091
日期:1958.4.1
The dissociationconstants of the cyanohydrins of a series of methylcyclohexanones have been measured. The polymethylcyclohexanone cyanohydrins show increasing instability on substitution owing to the effects of "axial crowding". The cyanohydrins of 3- and 4-methylcyclohexanone were found to be more stable than that of cyclohexanone and to explain this a new concept of "equatorial interference" is