57475-17-9Relevant academic research and scientific papers
SYNTHESIS OF VINCA ALKALOIDS AND RELATED COMPOUNDS, XLIX. AROMATIC SUBSTITUENT EFFECTS IN THE C-14 EPIMERIZATION
Moldvai, Istvan,Vedres, Andras,Szantay, Csaba,Toth, Gabor,Szantay, Csaba
, p. 109 - 118 (2007/10/02)
Some A-ring substituted vincamine derivatives and their C-14 epimers have been prepared and the aromatic substituent effects on the epimeric equilibrium of these compounds investigated.
HALOGENATION OF INDOLE ALKALOIDS WITH HALODIMETHYLSULFONIUM HALOGENIDS AND HALODIMETHYLSULFOXONIUM HALOGENIDS
Megyeri, Gabor,Keve, Tibor
, p. 3415 - 3430 (2007/10/02)
A new field of application of halodimethylsulfonium halogenids and halodimethylsulfoxonium halogenids had been studied.The formers were used for the halogenation of indole alkaloids, compounds of ergoline or aspidospermidine structure, and vincamine.
Synthesis of Vinca Alkaloids and Related Compounds, XXXIV: Synthesis of (3S,14S,16S)-Bromovincamines and Bromoapovincamines by Regioselective Bromination
Szabo, Lajos,Dobay, Laszlo,Kalaus, Gyoergy,Gacs-Baitz, Eszter,Tamas, Jozsef,Szantay, Csaba
, p. 781 - 789 (2007/10/02)
By bromimation of the iminium salt 2a (X=Cl), the 9-bromo derivative 2c (X=ClO4) is obtained in isomer-free state.Bromination of the lactam 8d leads to ca. 7.5:1 mixture of 11-bromo (8c) and 9-bromo (8a) lactams.These precursors have been used to synthesize 9-, 10- and 11-bromovincamines (11a-c), and 9-, 10- and 11-bromoapovincamines (12a-c).
