Alkaloids of Alstonia macrophylla

A new alkaloid, 19-hydroxyvincamajine, has been isolated from the leaves of Alstonia macrophylla. In addition to this, eight other indole alkaloids, alstonerine, alstophylline, macralstonine, anhydromacralstonine, talcarpine, vincamajine, vincorine and cabucraline, were also isolated and identified...

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Published inPhytochemistry (Oxford) Vol. 26; no. 3; pp. 868 - 870
Main Authors Ratnayake, Chitra K., Arambewela, Lakshmi S.R., De Silva, K.T.D., Atta-ur-Rahman, Alvi, K.A.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 1987
Subjects
13C NMR
Alstonia macrophylla
Apocynaceae
DEPT
indole alkaloids
leaves
stem bark
Apocynaceae
indole alkaloids
stem bark
leaves
Alstonia macrophylla
DEPT
13C NMR
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Summary:A new alkaloid, 19-hydroxyvincamajine, has been isolated from the leaves of Alstonia macrophylla. In addition to this, eight other indole alkaloids, alstonerine, alstophylline, macralstonine, anhydromacralstonine, talcarpine, vincamajine, vincorine and cabucraline, were also isolated and identified from the bark and leaves of A. macrophylla of Sri Lanka. The last five alkaloids have been isolated for the first time from this species and the 13NMR of alstonerine and alstophylline are reported.
ISSN:0031-9422
1873-3700
DOI:10.1016/S0031-9422(00)84812-8