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The bark of Strychnos brasiliensis Mart. contains this alkaloid which crystallizes from Et20 in colourless needles. It has [α]²⁶_D + 156° (c 0.91, CHC13) and gives an ultraviolet spectrum with an absorption maximum at 247 mil and shoulders at 277 and 285 mil. The structure is based mainly upon spectroscopic data.

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Iwataki, Comin., Tetrahedron, 27, 2541 (1971)

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