Synthesis, anti-HIV activity, integrase enzyme inhibition and molecular modeling of catechol, hydroquinone and quinol labdane analogs
作者:Rohan Pawar、Tiyasa Das、Sanjay Mishra、Nutan、Boskey Pancholi、Satish K. Gupta、Sujata V. Bhat
DOI:10.1016/j.bmcl.2013.11.014
日期:2014.1
Labdane analogs with o-quinol, catechol and hydroquinone moiety have been synthesized using Diels-Alder reaction of methyl 3,4-dioxocyclohexa-1,5-diene-carboxylate, 3,4-dioxocyclohexa-1,5-dienecarboxylic acid and 3,6-dioxocyclohexa-1,4-dienecarboxylic acid with mono terpene 1,3-dienes, namely ocimene and myrcene. The resulting molecules and their derivatives were evaluated for their anti-HIV-1 activity using TZM-bl cell based virus infectivity assay. Two molecules 13 and 18 showed anti-HIV activity with IC50 values 5.0 (TI = 11) and 4.6 (TI = 46) mu M, respectively. The compounds 17, 18 and 20 showed efficacy against HIV-1 integrase activity and showed inhibition with IC50 13.4, 11.1 and 11.5 mu M, respectively. The HIV-1 integrase inhibition activity of these synthetic molecules was comparable with integric acid, the natural fungal metabolite. Molecular modeling studies for the HIV-1 integrase inhibition of these active synthetic molecules indicated the binding to the active site residues of the enzyme. (C) 2013 Elsevier Ltd. All rights reserved.