The presecamines, a new group of dimeric indole alkaloids from Rhazya species, and their thermally derived monomers, secodine and 15,20-dihydrosecodine

Journal of the Chemical Society D: Chemical Communications
1970.0

Abstract

The new alkaloids, the presecamines (I) or (II), rearrange by acid catalysis to the corresponding secamines, and are Diels-Alder type dimers of secodines (III) containing an α-acrylic ester function; these thermally derived monomers dimerise back to the corresponding presecamine.

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