Synthesis and biological evaluation of new beta,beta'-disubstituted 6,7,8,9-tetrahydropyrido[1,2-a]indol-10-yl ethylamido melatoninergic ligands

Autor: Maria Panoussopoulou, David Sugden, Katherine Hough, Andrew Tsotinis
Rok vydání: 2003
Předmět:
Zdroj: European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences. 18(5)
ISSN: 0928-0987
Popis: Tricyclic analogs of melatonin with alkyl and cycloalkyl moieties in the beta position of the ethylamido chain have been prepared and tested for their ability to activate pigment granule aggregation in Xenopus laevis melanophores. The introduction of two methyl groups in the beta position of the side-chain of the methoxyl-substituted ligands induces a synergistic effect in agonist potency, which, importantly, is maintained after the methoxyl substituent is removed. The presence of more bulky beta-substituents, regardless of the size of the R group, seems to lead to antagonism.
Databáze: OpenAIRE