Strychnos henningsii

Strychnos henningsii Gilg [umnono, red bitteiberry] (Strychnaceae) stem bark is for stomachache 11). 

Investigation of the bark of Strychnos henningsii Gilg. resulted in the isolation of four nonquaternary alkaloids, diaboline, rindline, hennings-amine, and henningsoline (9). 

Strychnos henningsii is a South African species and the isolation of diaboline and its derivatives therefrom established a direct chemical link between American and African species (see also p. 194). Diaboline and a diacetyl Wieland-Gumlich aldehyde have also been isolated from the bark of the South American species S. chlorantha Prog. (12). The latter was identified by color reactions, chromatography, and mass spectrum (molecular formula C23H26N2O4), but insufficient material was available for further work. 

Bisset NG, Bosly J, Das BC, Spiteller G (1975) Alkaloids from Strychnos henningsii. Revised structures for holstiine and rindline, proposed structure for holstiline. Phytochemistry 14 1411-1414... 

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