10-Hydroxyaloin B 6'-O-Acetate, an Oxanthrone from Aloe claviflora
Analysis of the leaf exudate of Aloe claviflora resulted in the isolation of a new oxanthrone, 10-hydroxyaloin B 6'-O-acetate (1), whose structure was determined on the basis of spectral evidence as well as by conversion to the known compound 10-hydroxyaloin B (2).
Dagne
E
Department of Chemistry, Addis Ababa University, P.O. Box 30270, Addis Ababa, Ethiopia, and Department of Botany, Rand Afrikaans University, P.O. Box 524, Auckland Park, Johannesburg, 2006, South Africa.
Bisrat
D
Van Wyk BE
Viljoen
A