Publications

Publications serve as the concrete art form for the scientist. It is his modus operandi. Authorship is akin to success and achievement. It cannot and should not deteriorate into a bargaining tool or commodity. Dardik
Dagne, E., Bisrat, D., Van Wyk, B-E., Viljoen, A.M. 2000. Chromones and anthrones from Aloe marlothii and Aloe rupestris. Phytochemistry 55: 949–952.

A phytochemical investigation of the leaf exudate of Aloe marlothii has resulted in the isolation of a new chromone (7-O-methylaloeresin A) and a new anthrone (5-hydroxyaloin A 6′-O-acetate). Furthermore 7-O-methylaloesin was isolated as a natural product for the first time from the leaf exudate of Aloe rupestris. The structure elucidation of these compounds was based on spectral data including 2D NMR. The chemotaxonomic value of 7-O-methylaloesin in Aloe series Asperifoliae and section Pachydendron is discussed.



Publications - TUT, Pretoria, Gauteng, South Africa [2010 © alvaroviljoen.com]