doi:10.1093/ecam/nen077 Original Article

Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Bioassay-guided fractionation of the chloroform extract of Byrsonima fagifolia leaves led to the isolation of active antitubercular compounds alkane dotriacontane (Minimal Inhibitory Concentration—MIC, 62.5 μgmL−1), triterpenoids as bassic acid (MIC = 2.5 μgmL−1), α-amyrin acetate (MIC = 62.5 μgmL−1), a mixture of lupeol, α- and β-amyrin (MIC = 31.5 μgmL−1) and a mixture of lupeol, and acetates of α- and β-amyrin (MIC = 31.5 μgmL−1). The antimycobacterial activity was determined by the Microplate Alamar Blue Assay (MABA) and the structures of promising compounds were determined by spectroscopic analysis. This investigation constitutes the first report of a chemical and antitubercular study of apolar compounds from B. fagifolia Niedenzu (IK). 1