New cyclopenta[a]naphthalene derivatives. Synthesis of 2-(carbamylmethyl)-8-hydroxy-3H-cyclopenta[a]naphthalene as a possible deoxyribonucleic acid binding agent
作者:Nitya G. Kundu
DOI:10.1021/jm00179a008
日期:1980.5
in DMF to 2-(carbethoxymethyl)-8-methoxy-1-oxo-2,3-dihydro-1H-cyclopenta[a]naphthalene (8). Treatment of 8 with methanolic ammonia yielded the corresponding amide (9). Dealkylation of 8 with 48% HBr and subsequent esterification gave compound 10. Ammonolysis of 10 led to the amide 11, which after reduction and subsequent dehydration of the reduced product afforded the desired compound, 2-(carbamylm
Synthesis and biological evaluation of new naphtho- and quinolinocyclopentane derivatives as potent melatoninergic (MT 1 /MT 2 ) and serotoninergic (5-HT 2C ) dual ligands
as constrained agomelatine analogues. Herein, in order to explore alternative ethyl amide side chain rigidification, naphthocyclopentane and quinolinocyclopentane derivatives with various acetamide modulations were synthesized and evaluated at both melatonin (MT1, MT2) and serotonin (5-HT2C) receptors. These modifications has led to compounds with promising dual affinity and high MTs receptors agonist
Concise Enantioselective Total Synthesis of Daphenylline Enabled by an Intramolecular Oxidative Dearomatization
作者:Meng-Yue Cao、Bin-Jie Ma、Qing-Xiu Gu、Bei Fu、Hai-Hua Lu
DOI:10.1021/jacs.2c01674
日期:2022.4.6
Daphenylline is a structurally unique member of the triterpenoid Daphniphyllum naturalalkaloids, which exhibit intriguing biological activities. Six total syntheses have been reported, five of which utilize aromatization approaches. Herein, we report a concise protecting-group-free total synthesis by means of a novel intramolecular oxidative dearomatization reaction, which concurrently generates the