Krauze-Baranowska Mirosława, Pobłocka Loretta, El-Hela Atef Ahmed
Department of Pharmacognosy, Medical University of Gdańsk, Poland.
Z Naturforsch C J Biosci. 2005 Sep-Oct;60(9-10):679-85. doi: 10.1515/znc-2005-9-1004.
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.
从钝叶扁柏的叶子中分离并鉴定出了几种双黄酮，即：柳杉双黄酮、银杏双黄酮、异银杏双黄酮、罗汉松黄酮B、7,7”-O-二甲基穗花杉双黄酮、白果双黄酮、罗汉松黄酮A以及7-O-甲基穗花杉双黄酮。还证实了穗花杉双黄酮和扁柏双黄酮的存在。使用高效液相色谱法比较了其他扁柏属物种——美国扁柏、大西洋扁柏——以及栽培品种——日本花柏“凤尾”、日本花柏“银斑”——中双黄酮的组成。结果表明，除穗花杉双黄酮和扁柏双黄酮外，罗汉松黄酮A和7-O-甲基穗花杉双黄酮可被归类为扁柏属的化学分类学标记。
