binds more strongly than melatonin itself to both MT(1) and MT(2) subtypes. On the other hand, a 2-benzyl group in the same position allows MT(2) antagonist selective ligands to be obtained. The MT(2) selectivity and antagonist potency can be modulated with suitable modifications on the N-acyl and benzyl substituents, and the most selective compounds 10c and 19 show affinity ratios of 123 and 192, respectively
Syntheses of 2-Benzylbenzofuran Derivatives and 2-Aryl-nitrochroman Derivatives from Nitroalkene Precursors
作者:Chia-Yu Huang、Chun-Wei Kuo、Veerababurao Kavala、Ching-Fa Yao
DOI:10.1002/ejoc.201600314
日期:2016.5
the synthesis of 2-benzylbenzofuran, 3-substituted 2-benzylbenzofuran, and 2-aryl-nitrochroman derivatives are described. Benzofurans were generated from nitroalkenes by reduction with NaBH4 followed by a Nef reaction and acid-mediated cyclization, whereas 3-substituted 2-benzylbenzofurans were prepared from nitroalkenes by reactions with Grignard reagents followed by a Nef reaction and an acid-mediated