A new subgroup of bisbenzylisoquinoline alkaloids: (+)-cycleatjehenine and (+)-cycleatjehine

Article abstract of DOI:10.1016/S0040-4020(01)85416-8

The leaves of Cyclea atjehensis Forman (Menispermaceae) of Thai origin have yielded the bisbenzylisoquinolines (+)-cycleatjehenine(1a) and (+)-cycleatjehine(6). These alkaloids incorporate the unusual methyleneoxy bridge, and belong to a new bisbenzylisoquinoline subgroup.