Abstract
From the leaves and the roots of Anthocleista vogelii Planch, were isolated three secoiridoid glucosides. Besides sweroside I were found two compounds
bearing an oxygenated substituant on the lactonic ring: their structure is elucidated
by means of spectroscopic methods, including
13C–NMR spectroscopy. One of them is secologanic acid V and the other, a new glucoside
of A. vogelii, is named vogeloside VII. The conversion of secologanine IX into V and
VII is performed in vitro.
