Condensation of anthranilic acids with pyridines to furnish pyridoquinazolones via pyridine dearomatization
作者:Yajun Yang、Cuiju Zhu、Min Zhang、Shijun Huang、Jingjing Lin、Xiandao Pan、Weiping Su
DOI:10.1039/c6cc07365d
日期:——
The unprecedented carbodiimide-mediated condensation between pyridines and anthranilicacids via pyridines dearomatization at room temperature has been developed to provide a straightforward approach to pyridoquinazolones. The value of this approach...
A short synthesis of quinazolinocarboline alkaloids rutaecarpine, hortiacine, euxylophoricine A and euxylophoricine D from methyl N-(4-chloro-5H-1,2,3-dithiazol-5-ylidene)anthranilates
作者:Pramod K. Mohanta、Kyongtae Kim
DOI:10.1016/s0040-4039(02)00711-6
日期:2002.5
nthranilates with tryptamine at room temperature produced 2-cyano-3-[2-(indol-3-yl)ethyl]-4(3H)-quinazolinones, which underwent cyclization on heating with TFAA/HCl(g) to afford quinazolinocarbolinealkaloidsrutaecarpine (1a), hortiacine (1b), euxylophoricine A (1c) and euxylophoricine D (1d) in excellent yields.
Studies of rutaecarpine and related quinazolinocarboline alkaloids
作者:Jan Bergman、Solveig Bergman
DOI:10.1021/jo00208a018
日期:1985.4
Nickel‐Catalyzed Intramolecular Dual Annulation Reaction of Alkyl Nitrile‐Containing 1,2,3‐Benzotriazin‐4(3<i>H</i>)‐ones: A Pathway to Access Diversely Polycyclic Quinazolinone Alkaloids
作者:Vijaykumar H. Thorat、Yong‐Ran Huang、Hao‐Yu Chao、Jen‐Chieh Hsieh
DOI:10.1002/adsc.202301512
日期:——
Herein, we report a nickel‐catalyzed intramolecular dual annulation reaction of alkyl nitrile‐containing 1,2,3‐benzotriazine‐4(3H)‐ones to synthesize polycyclic quinazolinones. This catalytic reaction can construct the core structure of polycyclic quinazolinone alkaloids; therefore, we also apply this reaction as the critical step to access fifteen relevant alkaloids to demonstrate efficacy.