Silver-Mediated Oxidative Decarboxylative Intramolecular Asymmetric Radical Cyclization (C<sub>sp3</sub>–C<sub>sp2</sub>) via Memory of Chirality: Access to Circumdatin Alkaloids
作者:Pankaj S. Mahajan、Santosh B. Mhaske
DOI:10.1021/acs.orglett.8b00652
日期:2018.4.6
A novel silver-mediated oxidative decarboxylativeintramolecular asymmetric radical cyclization has been developed to form a Csp3–Csp2 bond via memory of chirality. The application of the process has been demonstrated for the synthesis of the circumdatin class of alkaloids in high enantiopurity with retention of the configuration. The developed protocol is mild and works with an inexpensive silver
A concise synthesis of enantiopure circumdatins E, H and J
作者:Paul E. Zhichkin、Xiaomin Jin、Honglu Zhang、Lisa H. Peterson、Catherine Ramirez、Tara M. Snyder、Hilde S. Burton
DOI:10.1039/b925494c
日期:——
A concise total synthesis of enantiopure circumdatins E, H and J has been developed using a reductive cyclization of chiral N-prolinoyl-2-nitrobenzamides to construct the core quinazolinone ring.
Copper-Catalyzed Intramolecular <i>N</i>-Arylation of Quinazolinones: Facile Convergent Approach to (−)-Circumdatins H and J
作者:Umesh A. Kshirsagar、Narshinha P. Argade
DOI:10.1021/ol101597p
日期:2010.8.20
A copper-catalyzed intramolecular N-arylation of a quinazolinone nucleus that furnished the central benzodiazepine core unit has been demonstrated to accomplish an efficient convergent total synthesis of (-)-circumdatins H and J.