Ninhydrin as a building block for yohimbanones, β-carbolines, and oxyprotoberberines
摘要:
Condensation of ninhydrin with tryptamide or tryptamine followed by Lewis acid-induced rearrangement provided yohimbanones that were readily converted to beta-carbolines via oxidative ring cleavage. The analogous condensation-rearrangement with 3,4-dimethoxyphenethylamine and ninhydrin afforded an oxyprotoberberine, which was further oxygenated at the 13a position. (c) 2006 Elsevier Ltd. All rights reserved.
Ninhydrin as a building block for yohimbanones, β-carbolines, and oxyprotoberberines
作者:Laura L. Tomasevich、Nicole M. Kennedy、Stephen M. Zitelli、R. Troy Hull、Chelsey R. Gillen、Suet K. Lam、Neal J. Baker、John C. Rohanna、Jason M. Conley、Marcy L. Guerra、Mari Lynne Starr、Justine B. Sever、Patrick J. Carroll、Michael S. Leonard
DOI:10.1016/j.tetlet.2006.11.115
日期:2007.1
Condensation of ninhydrin with tryptamide or tryptamine followed by Lewis acid-induced rearrangement provided yohimbanones that were readily converted to beta-carbolines via oxidative ring cleavage. The analogous condensation-rearrangement with 3,4-dimethoxyphenethylamine and ninhydrin afforded an oxyprotoberberine, which was further oxygenated at the 13a position. (c) 2006 Elsevier Ltd. All rights reserved.