Abstract:
Phytochemical investigations of Mammea usambarensis resulted into the isolation a
d-tocotrienol (1) and five known mammea-type coumarins (2e6). Their structures were
determined by NMR, IR, and LC-MS spectroscopic methods and by comparison of their
spectral and physical data with those reported previously in the literature. The presence of
these compounds is consistent with the compound classes reported from other members
of the genus Mammea. Compound 6 is isolated from the Mammea genus for the first time.
This is the new source of mammea-type coumarin compounds while the chemotaxonomic
significance of this investigation is summarized.
