
TY  - JOUR
A1  - Crow, WD 
A1  - Hancox, NC 
A1  - Johns, SR 
A1  - Lamberton, JA 
T1  - New alkaloids of <I>Alstonia constricta</I>
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1970
VL  - 23
IS  - 12
SP  - 2489
EP  - 2501
KW  - 
UR  - https://doi.org/10.1071/CH9702489 
N2  - In the course of the isolation of reserpine from the tertiary alkaloids of Alstonia constricta root bark, a number of other alkaloids were obtained, and these alkaloids have now been the subject of further study. Alstonidine, a previously known alkaloid for which the provisional structure (6) was suggested, has now been shown to have the stereochemistry depicted in (7a). A new alkaloid, alstonilidine, has been shown to be (8). Vincamajine (9) has been identified, and two new alkaloids, O-3,4,5-trimethoxycinnamoylvincamajine (10) and 0-3,4,5-trimethoxybenzoylquebrachidine (11) have been isolated from the "reserpine concentrate". Another alkaloid, probably C43H50N4O7, appears to be a new member of the "bisindole" group. 
ER  -

