Conversion of curcumin into heterocyclic compounds as potent anti-diabetic and anti-histamine agents

Abstract

Potential biologically active derivatives of the Curcumin were prepared by the cyclocondensation reaction cyclohexanone 2, imino pyrimidine 3,pyrmidinones 4,7 thiopyrimidine 6 and 5, ,7pyranone when treated with acetylacetone, guanidine , urea ethylcyanoacetate , thiourea and ethylacetoacetate respectively. The structures of compounds (2-7) were elucidated by means of microanalysis as well as spectral measurements such as IR, ¹H-NMR,MS. The anti-diabetic potential of Curcumin derivatives were evaluated by assessing amylase inhibition assay, alsoinhibition of histamine releaseactivityof Curcumin derivatives were assessed by U937 human monocytes. The results for amylase inhibition activity revels that the Curcumin inhibits α-amylase in a concentration dependent manner. Compound 4 and 5 exhibited significant inhibitory activity against amylase enzyme and was comparable with that of acrabose. Also,compound5, 6 and 7 exhibited significant inhibitory activity against histamine. Our results concluded that Curcumin pyrmidinones and pyranone derivatives have highly effects as anti-diabetic and anti-histamine activities.