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Updated: Aug 14, 2026

Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade
Published on: August 14, 2019
Biflavones from Chamaecyparis obtusa
Mirosława Krauze-Baranowska1, Loretta Pobłocka, Atef Ahmed El-Hela
1Department of Pharmacognosy, Medical University of Gdańsk, Poland. krauze@amg.gda.pl
Abstract:
From the leaves of Chamaecyparis obtusa several biflavones were isolated and identified, namely: sciadopitysin, ginkgetin, isoginkgetin, podocarpusflavone B, 7,7"-O-dimethylamentoflavone, bilobetin, podocarpusflavone A, and 7-O-methylamentoflavone. The presence of amentoflavone and hinokiflavone was also confirmed. The composition of biflavones in other Chamaecyparis species--Ch. lawsoniana, Ch. thyoides--and cultivar varieties--Ch. pisifera "Squarrosa", Ch. pisifera "Boulevard"--was compared using the HPLC method. It was stated, that podocarpusflavone A and 7-O-methylamentoflavone in addition to amentoflavone and hinokiflavone may be classified as chemotaxonomic markers of the genus Chamaecyparis.
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