摘要
从连香树（CercidiphyllumjaponicumSieb.etZucc.）树皮中分离到8个化合物。其中7个为黄酮醇，l个为酚酸类成分。经理化测定和波谱解析，分别鉴定为：5，7-二羟基-3，8，4'-三甲氧基黄酮（Ⅰ）、3，5，7-三羟基-8，4'-二甲氧基黄酮（Ⅱ）、5，7，4'-三羟基-3，8-二甲氧基黄酮（Ⅲ）、3，5，7，4'-四羟基-8-甲氧基黄酮（Ⅳ）、3，5，7，4'-四羟基黄酮（Ⅴ）、5，7-二羟基-8，4'－二甲氧基黄酮-3-O-葡萄糖甙（Ⅶ）、5，7，4'-三羟基-8-甲氧基黄酮-3－O-葡萄糖甙（Ⅷ）和没食子酸乙酯（Ⅵ）。其中化合物Ⅶ为未见报道的新化合物。除化合物Ⅴ外，其余化合物均为首次从该属植物中分得。
Eight compounds were isolated from the bark of Cercidiphyllum japonicum Sieb. et Zucc. Theirstructures were identified with spectral and chemical methods as 5, 7-dihydroxy-3, 8, 4'-trimethoxyflavone(Ⅰ), 3, 5, 7-trihydroxy-8, 4'-dimethoxyflavone (Ⅱ), 5, 7, 4'-trihydroxy -3, 8-dimethoxyflavone (Ⅲ), 3, 5,7, 4'- tetrahydroxy- 8 - methoxyflavone (Ⅳ), 3, 5, 7, 4' - tetrdhydroxyflavone (Ⅴ), 5, 7 - d ihydroxy- 8, 4' dimethoxy- 3 - O- glucoside (Ⅶ), 5, 7, 4' - trihydroxy-8- methoxyflavone- 3 - O-glucoside (Ⅷ). One phenol acidcompound was identified as ethyl gallate (Ⅵ). AInong them, compound Ⅶ is a new compound that has neverbeen reported. Except compound Ⅴ, all the other compounds were isolated from this genus for the first time.
基金
国家自然科学基金!39470063l
关键词
连香树
黄酮醇
化学成分
树皮
ercidiphyllum japonicum, Flavonol, 5, 7-dihydroxy-8, 4' - d imethoxy-3-O-glucoside
