ISOLATION AND SYNTHESIS OF BISHORDENINYL TERPENE ALKALOIDS. SOME EXPERIMENTS RELATING TO THE NATURAL OCCURENCE OF FORMAL DIELS-ALDER ADDUCTS.

Article abstract of DOI:10.1016/S0040-4020(01)97202-3

Leaves of Zanthoxylum procerum (Rutaceac) yielded two major optically inactive alkaloids, culantraramine and culantraraminol, which were assigned bishordeninyl terpene structures based upon spectral evidence and conversions to known alkaloids.Two minor al