66408-36-4Relevant academic research and scientific papers
An Acid-Catalyzed Epoxide Ring-Opening/Transesterification Cascade Cyclization to Diastereoselective Syntheses of (±)-β-Noscapine and (±)-β-Hydrastine
Li, Jihui,Liu, Yongxiang,Song, Xinjing,Wu, Tianxiao,Meng, Jiaxin,Zheng, Yang,Qin, Qiaohua,Zhao, Dongmei,Cheng, Maosheng
supporting information, p. 7149 - 7153 (2019/09/30)
An acid-catalyzed stereoselective epoxide ring-opening/intramolecular transesterification cascade cyclization reaction and N-Boc deprotection was found to be a successful strategy to construct the phthalide tetrahydroisoquinoline skeleton in one pot. Based on this strategy, the unified and highly diastereoselective routes for the total syntheses of (±)-β-Noscapine and (±)-β-Hydrastine were exploited.
Diastereoselektive Hydroxyalkylierungen in 1-Stellung von Tetrahydroisochinolinen und Synthese von Aporphin-, Protoberberin- und Phthalid-Alkaloiden
Seebach,Dieter,Huber, Isabelle M. P.,Syfrig, Max A.
, p. 1357 - 1379 (2007/10/02)
Unsubstituted and 6,7-dialkyloxy-N-pivaloyl-tetrahydroisoquinolines 1-3 are converted to 1-bromomagnesium derivatives by sequential treatment with t-BuLi (-75 deg C/THF) and MgBr2*OEt2.Addition of the metalated tetrahydroisoquinolines to aliphatic or arom
A Pyrolytic Route to the Phthalide-Isoquinolines
Elango, Varadaraj,Shamma, Maurice
, p. 4879 - 4881 (2007/10/02)
Pyrolysis of 8,13-dioxo-14-methoxycanadine (5) yields methyl keto ester 11 (35percent), aromatic phthalide-isoquinoline 12 (15percent), and (+)-chilenine (13, 7percent).Methyl keto ester 11 can be reduced quantitatively to 12 with sodium borhydride.Cataly
