Synthesis of cystodamine, a pentacyclic aza-aromatic alkaloid
摘要:
A pentacyclic aza-aromatic alkaloid, cystodamine (6), and its isomer (11) were synthesized from 7-(or 6-)bromo-4-chloro-5,8-quinolinedione (1, 8) and o-nitrocinnamaldehyde dimethylhydrazone (2) using hetero Diels-Alder reaction. (C) 1997 Elsevier Science Ltd.
Two aromatic alkaloids, meridine (1) and cystodamine (3); and related compounds (2, 4, 5) were synthesized by hetero Diels-Alder reaction between 4-methoxy- (or 4-chloro-)5,8-quinolinedione and 2-nitrocinnamaldehyde dimethylhydrazone. (C) 1998 Elsevier Science Ltd. All rights reserved.
Oxidative Cyclization of Kynuramine and Ynones Enabling Collective Syntheses of Pyridoacridine Alkaloids
作者:Dongfang Jiang、Shaozhong Wang
DOI:10.1021/acs.joc.1c02009
日期:2021.11.5
A cerium(III)-catalyzed oxidative cyclization of kynuramine and ynones has been reported as a key reaction in the total synthesis of marine pentacyclic pyridoacridine alkaloids featuring different ring connectivity patterns. The formation of tricyclic benzonaphthyridine rings was identified in the oxidative process. By combining with an intramolecular acylation and the chemoselective late-stage functionalization
A pentacyclic aza-aromatic alkaloid, cystodamine (6), and its isomer (11) were synthesized from 7-(or 6-)bromo-4-chloro-5,8-quinolinedione (1, 8) and o-nitrocinnamaldehyde dimethylhydrazone (2) using hetero Diels-Alder reaction. (C) 1997 Elsevier Science Ltd.