Synthesis and pharmacological evaluation of pentacyclic 6a,7-dihydrodiindole and 2,3-dihydrodiindole derivatives as novel melatoninergic ligands
作者:Mohamed I. Attia、Paula A. Witt-Enderby、Justin Julius
DOI:10.1016/j.bmc.2008.07.012
日期:2008.8
The synthesis of novel melatonin analogues 3a and 4a-c designed as melatonin receptor ligands is described. Among the newly synthesized ligands, 2-((S)-2-hydroxymethylindolin-1-ylmethyl)-melatonin 4b displayed the highest affinity for MT(1) receptors (K(i)=9.8 nM) and for MT(2) subtype (K(i)=7.8 nM), whereas the rigid pentacyclic ligand 3 showed the highest selectivity towards the MT(2) receptor subtype