Chemical constituents from active fraction in pericarps of Juglans mandshurica
Objective To study the chemical constituents from the effective fraction in pericarps ofJuglans mandshurica.Methods The compounds were isolated and purified by various chromatographic methods,including silica gel,Sephadex LH-20,and preparative high performance liquid chromatography.Their structures were elucidated by NMR and MS analyses.Results Fifteen compounds were obtained and identified as kaempferol (1),oleanolie acid (2),chrysophanol (3),pinostrobin (4),(2S)-onysilin (5),juglanin B (6),(S)-regiolone (7),chlorogenic acid (8),(4S)-4-hydroxy-1-tetralone (9),(4S,5S,7R,8R,14R)-8,1 1-dihydroxy-2,4-cyclo-eudesmane (10),5-hydroxy-3,7,3',4'-tetramethoxyflavone (11),(2S)-5,7,4'-trihydroxy-dihydroflavonol (12),p-hydroxybenzonic acid (13),p-methoxyphenylacetic acid (14),and 1,4-dihydroxybenzene (15).Conclusion Compounds 8-15 are first isolated from the pericarps ofJ.mandshurica and compounds 11,12,14,and 15 are obtained from the plants ofJuglans L.for the first time.
pericarps of Juglans mandshurica Maximchlorogenic acid(4S)-4-hydroxy-l-tetralone5-hydroxy-3, 7, 3', 4'-tetrameth-oxyflavone(2S)-5,7,4'-trihydroxy-dihydroflavonolp-methoxyphenylacetic acid1,4-dihydroxybenzene
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万方数据
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