A regio- and stereoselective didehydrodimerization procedure, whose key step involves the anodic oxidation, allows the conversion of β-anilinoacrylic alkaloids belonging to the Aspidosperma class, typified by tabersonine (1) and its 3-oxo derivative 2, into the hitherto unknown 16,10′-didehydro dimers 3 and 7, respectively.
Abstract Extracts from the seeds and leaves of Stemmadeniagrandiflora yielded 16 alkaloids of the ibogan and plumeran type. 3-Oxovincadifformine, 14β-hyd
Biomimetic alkaloid syntheses. 15. Enantioselective syntheses with epichlorohydrin: total syntheses of (+)-, (-)- and (.+-.)-vindoline and a synthesis of (-)-vindorosine
作者:Martin E. Kuehne、David E. Podhorez、Tshilundu Mulamba、William G. Bornmann
DOI:10.1021/jo00379a006
日期:1987.2
Aimi, Norio; Tanabe, Sohei; Asada, Yoshihisa, Chemical and pharmaceutical bulletin, 1982, vol. 30, # 9, p. 3427 - 3430
Methods for indole alkaloid synthesis. Iodoxybenzenediphenyldiselenidereagent system for the introduction of oxygen functionality into aspidosperma-type alkaloids
作者:Philip Magnus、Mark Ladlow、Peter M Cairns
DOI:10.1016/s0040-4039(00)95498-4
日期:1987.1
Oxidation of using PhIO2/(PhSe)2 gave the -alcohol and the enone . Whereas, similar treatment of 8-oxotabersonine gave the epoxide and the -alcohol .