NEW ALKALOIDS FROM CRYPTOLEPIS-SANGUINOLENTA

Authors
CIMANGA K DEBRUYNE T PIETERS L CLAEYS M VLIETINCK A
Citation
K. Cimanga et al., NEW ALKALOIDS FROM CRYPTOLEPIS-SANGUINOLENTA, Tetrahedron letters, 37(10), 1996, pp. 1703-1706
Citations number
4
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron letters → ACNP
ISSN journal
00404039
Volume
37
Issue
10
Year of publication
1996
Pages
1703 - 1706
Database
ISI
SICI code
0040-4039(1996)37:10<1703:NAFC>2.0.ZU;2-P
Abstract
Neocryptolepine and biscryptolapine, two new alkaloids, were isolated from the root bark extract of the African medicinal plant, Cryptolepis sanguinolenta (Lindl.) Schlechter (Periplocaceaa), and their structur es elucidated on the basis of spectral evidence. The H-1 and C-13 NMR assignments of cryptoquindoline, a known artefact, were revised.