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ID: ALA4387755
Journal: Bioorg Med Chem
Title: Polybenzyls from Gastrodia elata, their agonistic effects on melatonin receptors and structure-activity relationships.
Authors: Chen SY, Geng CA, Ma YB, Huang XY, Yang XT, Su LH, He XF, Li TZ, Deng ZT, Gao Z, Zhang XM, Chen JJ.
Abstract: Gastrodia elata is a famous traditional Chinese herb with medicinal and edible application. In this study, nine polybenzyls (1-9), including six new ones (2-5, 7 and 9), were isolated from the EtOAc extract of G. elata. Five compounds 1, 3, 4, 6 and 8 were found to activate melatonin receptors. Especially, compound 1 showed agonistic effects on MT1 and MT2 receptors with EC50 values of 237 and 244 μM. For better understanding their structure-activity relationships (SARs), ten polybenzyl analogs were further synthesized and assayed for their activities on melatonin receptors. Preliminary SARs study suggested that two para-hydroxy groups were the key pharmacophore for maintaining activity. Molecular docking simulations verified that compound 1 could strongly interact with MT2 receptor by bonding to Phe 118, Gly 121, His 208, Try 294 and Ala 297 residues.
CiteXplore: 31204226