Carbazole alkaloids

[1] Carbazole alkaloids with unsubstituted benzene rings occur rarely.

Olivacin has been found in the bark of Aspidosperma olivaceum and ellipticin in Ochrosia elliptica.

[2] Some carbazole alkaloids, especially glybomin B, have been isolated from Glycosmis pentaphylla.

[3] Representatives include, among others, glycozoline, olivacine and ellipticin[2] and further glybomine B.

Furthermore, they have detrimental effects against HIV viruses and tumor cells.