Alkylation of 3,4-dihydro-β-carboline has been accomplished with organo-copper and -lithium reagents by activation of BF3·OEt2 or trimethylsilyl trifluoromethanesulphonate.
METHOD OF SCREENING FOR AGENTS FOR DIFFERENTIATING STEM CELLS
申请人:MINERVA BIOTECHNOLOGIES CORPORATION
公开号:US20180263964A1
公开(公告)日:2018-09-20
The present application discloses a method for identifying an agent for the treatment or prevention of cancer or metastatic cancer comprising the steps of contacting stem cell with a potential agent, and identifying an agent that induces differentiation, or inhibits stem cell pluripotency or growth of the stem cell, wherein such agent is determined to be an anti-cancer agent.
2-Substituted 1-tosyl-3,4,4-trimethylimidazolidines prepared by the addition of anions to 1-tosyl-3,4,4-trimethyl-2-imidazolinium iodide 1, react with tryptamine in the presence of acetic acid to give 1-substituted β-carboline derivatives. The salt 1 reacts with anions of 2-[2-(1,3-dithianyl)]benzoates 4a-c to give the corresponding imidazolidines 5a, 5b and 5c, respectively. These transfer the substituted
A number of 1-substituted 3,4-dihydro-9H-β-carboline derivatives (4) with high purity and yields have been synthesized by treating of tryptamine (1) with carboxylicacids (2) in polyphosphoric acid. 3,4-Dihydro-9Η-β-carbolines (4) were successfully transformed to 1,2,3,4-tetrahydro-9H-β-carbolines (5) and 9H-β-carbolines (6).