齿瓣石斛化学成分研究

 目的 研究齿瓣石斛的化学成分。方法 应用硅胶、凝胶和制备液相层析等方法分离得到单体化合物,通过理化常数和波谱分析鉴定化合物的结构。结果 从齿瓣石斛体积分数95%乙醇提取物中分离得到25个化合物,分别鉴定为3-羟基-4′,5-二甲氧基联苄(1),3,4′,5-三羟基-3′-甲氧基联苄(2),3,4′,5-三羟基联苄(3),N-反式-香豆酰酪胺(4), N-反式-对羟基苯乙基咖啡酰胺(5), 对羟基苯丙酰酪胺(6),N-顺式-香豆酰酪胺(7), 2,5-二羟基-4-甲氧基-9,10-二氢菲(8),2,4,7-三羟基-9,10-二氢菲(9),柚皮素(10),二氢松柏醇乙酸酯(11),对羟基桂皮酸乙酯(12),对羟基桂皮酸(13),对羟基苯丙酸(14),对羟基苯甲酸(15),原儿茶酸(16),erigeside Ⅱ(17),枸橼苦素(18),二氢丁香苷(19),leonuriside A(20),腺苷(21),β-谷甾醇(22),胡萝卜苷(23),(+)-丁香脂素-O-β-D-吡喃葡萄糖苷(24),蔗糖(25)。结论 化合物1~21,24~25均为首次从齿瓣石斛中分离得到,其中,化合物1为首次从石斛属植物中分得,化合物5、7、11、12、18为首次从兰科植物中分得。

Chemical Constituents of Dendrobium devonianum

OBJECTIVE To study the chemical constituents of Dendrobium devonianum. METHODS The compounds were isolated and purified by means of column chromatography with silica gel, Sephadex LH-20 and prep- HPLC. Their structures were identified on the basis of physicochemical parameters and spectroscopic data comparison with standard literature data. RESULTS Twenty-five compounds were isolated from the 95% ethanol extract of D. devonianum, and identified as 3-hydroxy-4′,5-dimethoxybibenzyl(1), tristin(2), 3,4′,5-trihydroxybibenzyl(3), N-trans-coumaroyltyramine(4), N-trans- caffeoyltyramine(5), p-hydroxyphenylpropionyltyramine(6), N-cis-coumaroyltyramine(7), 2,5-dihydroxy-4-methoxy-9, 10-dihydrophenanthrene(8), 2,4,7-trihydroxy-9,10-dihydrophenanthrene(9), 4′,5,7-trihydroxy-flavonol(10), dihydroconifery acetate(11), ethyl 4-hydroxycinnamate(12), p-hydroxycinnamic acid(13), p-hydroxyphenylpropionic acid(14), 4-hydroxybenzoic acid(15), protocatechuic acid(16), erigeside Ⅱ(17), citrusin C(18), dihydrosyringin(19), leonuriside A(20), adenosine(21), β-sitosterol(22), daucosterol(23),(+)-syringgaresinol-O-β-D-glucopyranoside(24) and sucrose(25). CONCLUSION Compounds 1-21 and 24-25 are obtained from this plant for the first time. Compound 1 is isolated from the Dendrobium genus for the first time. Compounds 5, 7, 11, 12 and 18 are obtained from Orchidaceae for the first time.