Two New Prenylated Flavonoids From Paracalyx Scariosa

Abstract

Two new prenylated flavonoids, named scariosin (1) and isorhynchospermin (2) were isolated from the leaves of paracalyx scariosa together with kaempferol, quercetin, kaempferol 3-O- rutinoside and rutin. The structures of (1) and (2) were characterized as 8-C- prenyl- taxifolin 7,3'-dimethylether and 6-C-prenylquercetin 7,4'-dimethylether by their chemical and spectra data, respectively.

Keywords

• flavonoids from paracalyx scariosa
• scariosin
• isorhynchospermin
• kaempferol
• quercetin
• kaemferol 3-o-rutinoside
• rutin