Yf. Hallock et al., GENTRYMINE-B, THE FIRST QUATERNARY ISOQUINOLINE ALKALOID FROM ANCISTROCLADUS-KORUPENSIS, Tetrahedron letters, 36(27), 1995, pp. 4753-4756
A novel tetrahydroisoquinoline alkaloid, gentrymine B (3), was isolate
d from the tropical liana Ancistrocladus korupensis. Although numerous
naphthyl tetrahydroisoquinoline alkaloids have been found in the genu
s Ancistrocladus, no such quaternary alkaloid has previously been repo
rted as a natural product.