Synthesis and evaluation of N1-alkylindole-3-ylalkylammonium compounds as nicotinic acetylcholine receptor ligands
摘要:
In this study thirty-three novel indole derivatives were designed and synthesized based on the structure of deformylflustrabromine B (1), a metabolite isolated from the marine bryozoan Flustra foliacea L. The syntheses were carried out using standard methodologies and in good yields. The molecules were tested for their affinities for the alpha 4 beta 2*, alpha 3 beta 4*, alpha 7* and (alpha 1)(2)beta 1 gamma delta nicotinic acetylcholine receptor (nAChR) sub-types. Binding assays showed that, among these ligands, compound 7c exhibited the highest affinity with K-i = 136.1, 93.9 and 862.4 nM for the alpha 4 beta 2*, alpha 3 beta 4*, and alpha 7* nAChRs subtypes, respectively. These results indicated that the indole core might be a useful scaffold for the development of new potent and selective nAChR ligands. (C) 2012 Elsevier Ltd. All rights reserved.
Synthesis and evaluation of N1-alkylindole-3-ylalkylammonium compounds as nicotinic acetylcholine receptor ligands
作者:Edwin G. Pérez、Bruce K. Cassels、Christoph Eibl、Daniela Gündisch
DOI:10.1016/j.bmc.2012.04.050
日期:2012.6
In this study thirty-three novel indole derivatives were designed and synthesized based on the structure of deformylflustrabromine B (1), a metabolite isolated from the marine bryozoan Flustra foliacea L. The syntheses were carried out using standard methodologies and in good yields. The molecules were tested for their affinities for the alpha 4 beta 2*, alpha 3 beta 4*, alpha 7* and (alpha 1)(2)beta 1 gamma delta nicotinic acetylcholine receptor (nAChR) sub-types. Binding assays showed that, among these ligands, compound 7c exhibited the highest affinity with K-i = 136.1, 93.9 and 862.4 nM for the alpha 4 beta 2*, alpha 3 beta 4*, and alpha 7* nAChRs subtypes, respectively. These results indicated that the indole core might be a useful scaffold for the development of new potent and selective nAChR ligands. (C) 2012 Elsevier Ltd. All rights reserved.
Guanidinium Hypoiodite-Catalyzed Intramolecular Oxidative Coupling Reaction of Oxindoles with β-Dicarbonyls
作者:Kota Sugimoto、Io Mori、Takanari Kato、Koji Yasui、Ban Xu、Choon Hong Tan、Minami Odagi、Kazuo Nagasawa
DOI:10.1021/acs.joc.2c02500
日期:——
Spiro[indoline-3,4′-piperidine] is a fundamental motif present in various biologically active compounds. Here, we report an intramolecularoxidative coupling reaction of oxindoles with β-dicarbonyls in the presence of a guanidinium hypoiodite catalyst, providing spiro-coupling products in moderate to excellent yields. Furthermore, a chiral hypoiodite catalyst derived from the chiral guanidinium organocatalyst