Strychnos 1990 - 2004 - Crops for the Future

Author
Title
Year
Source title
Reference
Caira, M. R. and P. Rasoanaivo
Structure of malagashanine, a new alkaloid with chloroquine-potentiating action
1995
Journal of Chemical Crystallography
25(11): 725-729
Abstract
The molecular structure of malagashanine (C23H30N2O4), a new alkaloid occurring in Madagascan
Strychnos species and showing chloroquine-potentiating action, has been determined by single
crystal X-ray diffraction. The crystals, in the form of a 1:1 acetone solvate, are monoclinic, space
group P2(1), with a = 10.328(2), b = 10.554(6), c = 11.490(5)Angstrom, beta = 96.67(2)degrees, Z =
2. Refinement based on 3650 reflections measured at 294K yielded R = 0.045. The X-ray analysis
shows that the ring system in malagashanine differs from that in alkaloids of the strychnobrasiline
type in containing only five- and six-membered rings. Thermal analysis of the solvate indicates that
the acetone molecules are firmly held in the crystal and the X-ray analysis reveals that they are
trapped in crystal voids. Only van der Waals forces and C-H ... O hydrogen bonds stabilize the
c r y s t a l s t r u c t u r e .
Author
Title
Year
Source title
Reference
Corsaro, M. M., I. Giudicianni, R. Lanzetta, C. E. Marciano, P. Monaco and M. P
Polysaccharides from seeds of Strychnos species
1995
Phytochemistry
39(6): 1377-1380
Abstract
The chemical composition of polysaccharide fractions from Strychnos nux-vomica and S. innocua
seeds and comparison with those from S. potatorum seeds are reported. The structural features of the
galactomannans from the three Strychnos species are also discussed.
Author
Title
Year
Source title
Reference
Abstract
Delaude, C., P. Thepenier, M. J. Jacquier, J. M. Nuzillard, G. Massiot and L. Le
Alcaloides de Strychnos angolensis
1995
Bulletin Societe Royale Des Sciences De Liege
64(4/5): 243-246
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