
TY  - JOUR
A1  - Nelson, ER 
A1  - Price, JR 
T1  - Alkaloids of the Australian Rutaceae: <I>Pentaceras australis</I> Hook. F. II. Identification of 5-Methoxycanthinone
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1952
VL  - 5
IS  - 3
SP  - 563
EP  - 569
KW  - 
UR  - https://doi.org/10.1071/CH9520563 
N2  - The alkaloid C15H10O2N2, present in the bark of Pentaceras australis Hook. f., has been shown to be 5-methoxycanthin-6-one. It is oxidized by potassium permanganate to &#946;-carboline-1-carboxylic acid and its lactam ring may be opened by alkali to give a &#946;-carbolylmethoxyacrylic acid which readily recyclizes to the alkaloid. The position of the methoxyl group is demonstrated by demethylation and condensation of the resulting hydroxy-compound with o-phenylenediamine to give a hydroxyquinoxaline. Attempted hydrogenation of the alkaloid or the derived methoxyacrylic acid led to elimination of methoxyl. 
ER  -

