Hypericum perforatum Linn.

Protohypericin is a compound that can be extracted from Hypericum perforatum. Protohypericin has low photocytotoxicity but can be efficiently photoconverted into Hypericin (HY-N0453) with high phototoxicity under visible light. Protohypericin can be used in cancer research.

trans-Chlorogenic acid (trans-3-O-Caffeoylquinic acid) is a caffeoyl ester derivative of quinic acid, as well as an oviposition stimulant. trans-Chlorogenic acid can be found in the leaves of carrot (Daucus carota) and wild parsnip (Pastinaca sativa).

Assiguxanthone B is a natural xanthone.

Hyperidione D is apotent antidepressant agent. Hyperidione D shows neuroprotective effects.

Protopseudohypericin, a naturally occurring naphthodianthrone, is isolated from H. perforatum. Protopseudohypericin is considered to be the biosynthetic precursor of Pseudohypericin.

Protohypericin is a compound that can be extracted from Hypericum perforatum. Protohypericin has low photocytotoxicity but can be efficiently photoconverted into Hypericin (HY-N0453) with high phototoxicity under visible light. Protohypericin can be used in cancer research.

8-Hydroxyhyperforin 8,1-hemiacetal, a monoterpenoid, is a hyperforin oxidized product.