Polypodiaceae

Multiflorin B (compound 5) is a kind of kaempferol glycoside. Multiflorin B can be isolated from the root of the fern Neocheiropteris palmatopedata. Multiflorin B inhibits nitric oxide production at a concentration of 20 μg/ml with an inhibition of 52%.

(±)-Eriodictyol 7-O-β-D-pyranoglucuronide is a flavonoid glycoside found in the leaves of Pyrrosia petiolosa.

threo-Guaiacylglycerol β-coniferyl ether (compound 9) is a potentially active compound, but its inhibitory activity against NF-κB, nitric oxide production, aromatase, quinone reductase 2, and cyclooxygenase (COX-1/-2) is not significant. threo-Guaiacylglycerol β-coniferyl ether can be naturally extracted from the 95% ethanol extract of the whole plant of Lepisorus contortus (Christ) Ching (a plant of the Polypodiaceae family).

Pyrroside A is a potentially active compound that can be naturally extracted from the leaves of Pyrrosia linearfolia (Hook.) CHING.

Eriodictyol 7-O-β-D-glucuronide ethyl ester is a natural flavonoid.

Transilin is a sesquiterpene lactone. Transilin can be isolated from the whole plant of Lepisorus contortus (Christ) Ching.

Drynachromoside A is a chromone glycoside. Drynachromoside A has biochemical effects on the osteoblastic (MC3T3-E1 cells) proliferation activities.