A Photochemical Approach to the Fully Functionalized Ring System of Chilinene, a Key Alkaloid of the Berberine Family
作者:Paul H. Mazzocchi、Cliff R. King、Herman L. Ammon
DOI:10.1016/s0040-4039(00)95444-3
日期:1987.1
The fully functionalized ringsystem of the berberine alkaloid chilinene has been prepared in a seven step synthesis. Key steps in the synthesis are the photocyclization of an imide-thioether and the oxidative formation with Pb(OAc)4 of a novel hexacyclic orthoester which led directly to the desired product.
Kessar, S V; Singh, Tejvir; Vohra, Rahul, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1991, vol. 30, # 11, p. 999 - 1005
作者:Kessar, S V、Singh, Tejvir、Vohra, Rahul
DOI:——
日期:——
A concise synthesis of the aporhoeadane skeleton
作者:Bridget E. Piko、Amy L. Keegan、Michael S. Leonard
DOI:10.1016/j.tetlet.2011.02.068
日期:2011.4
A concise synthesis of the isoindolobenzazepine aporhoeadane core is achieved in four steps from homoveratrylamine and ninhydrin. (C) 2011 Elsevier Ltd. All rights reserved.
Dioxirane Epoxidation of 10-Membered-Ring Stilbene Lactams as Synthetic Precursors to Protoberberines
作者:Gema Rodríguez、Luis Castedo、Domingo Domínguez、Carlos Saá、Waldemar Adam、Chantu R. Saha-Möller
DOI:10.1021/jo981829n
日期:1999.2.1
Silylated stilbene lactams 1, prepared by intramolecular addition of an aryl radical to a trimethylsilylacetylene, were converted into protoberberines by dimethyldioxirane (DMD) epoxidation and subsequent acid-catalyzed cyclization of the epoxysilane with HCl. Treatment of the nonsilylated trans- and cis-stilbene derivatives with DMD afforded 13-hydroxytetrahydroprotoberberines and 13a-hydroxy-13-ketotetrahydroprotoberberines as the main products. Tetrahydroprotoberberines were also obtained in excellent yields by the reaction of both silylated and nonsilylated lactams with hydriodic acid.
KESSAR, S. V.;SINGH, TEJVIR;VOHRA, RAHUL, TETRAHEDRON LETT., 28,(1987) N 44, 5323-5326