
TY  - JOUR
A1  - Johns, SR 
A1  - Lamberton, JA 
A1  - Li, CS 
A1  - Sioumis, AA 
T1  - New alkaloids from a <I>Popowia</I> species (Annonaceae)
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1970
VL  - 23
IS  - 2
SP  - 363
EP  - 368
KW  - 
UR  - https://doi.org/10.1071/CH9700363 
N2  - A bisbenzylisoquinoline and three noraporphine alkaloids have been isolated from the bark of a Popowia species (Popowia cf. cyanocarpa Laut. 85 K. Schum.) of the family Annonaceae. The major alkaloid is 1-hydroxy-2,9,10-trimethoxynoraporphine (1), and comparison with the known alkaloid wilsonirine, to which the same structure had been assigned, indicates that the Popowia base is the (+)-form, while   wilsonirine is largely racemic. Another alkaloid, 2-hydroxy-1-methoxynoraporphine (3), is identical with the known alkaloid asimilobine, while the third noraporphine, 1-hydroxy-2,10,11-trimethoxynoraporphine (4), has not previously been reported. The bisbenzylisoquinoline alkaloid, dauricine O-methyl ether (6), has not previously been isolated as an alkaloid but it has been prepared as a derivative of dauricine. 
ER  -

