Alkaloids from Alstonia Macrophylla / Lim Siew Huah

The Malaysian plant, Alstonia macrophylla Wall, was investigated for its alkaloidal content and the results are summarized in the Table below. A total of 90 alkaloids were isolated and characterized from the leaf and stem-bark of A. macrophylla. Of these, 30 are new alkaloids. The leaf extract of A....