A new hydroxyindole alkaloid has been isolated from the roots and epigeal part ofVinca herbaceae — herboxine, C23H28N2O6, [α]D +40° (c 1.13; methanol).
On the basis of UV, IR, NMR, and mass spectroscopy and a transition from majdine to herboxine, structure (I) has been proposed for it which differs from that of majdine by the configuration at C3.
KeywordsMass Spectrum Alkaloid Benzene Ring HMDS Epigeal Part
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