Chemical constituents from <em>Usnea longgisima</em>, a traditional mongolian medicine-文献传递-植物通论文库

摘要：目的: 研究长松萝的化学成分。 方法: 用正相硅胶、Sephadex LH-20、制备高效液相色谱等方法进行分离纯化, 根据理化性质、光谱数据以及结合文献报道的波谱数据鉴定化合物的结构。 结果: 分离得到10个化合物, 分别鉴定为(4aR,9bS)-2,6-二乙酰基-3,4a,7,9-四羟基-8,9b-二甲基-1-氧代-1,4,4a,9b-四氢二苯骈呋喃酮(1), (+)-松萝酸(2),苔黑酚(3),18R-hydroxydihydroalloprotolichensterinic acid(4),3β-羟基-5α,8α-桥二氧麦角甾-6,22-二烯(5), 扁枝衣酸乙酯(6),阿拉伯糖醇(7), 芹菜素-7-O-β-D-葡萄糖醛酸苷(8), 3-羟基-5-O-甲基-2-甲基苯甲酸(9),木栓酮(10)。 结论: 化合物1为新化合物,化合物8为首次从松萝属地衣分离得到,化合物3,4,7为首次从长松萝中分离得到。

Abstract:Objective: To study the chemical constituents of the whole lichen of Usnea longissima. Method: The compounds were separated by silica gel, Sephadex LH-20 chromatography and high performance liquid chromatography(HPLC). The structures of the compounds isolated were identified by physico-chemical properties and spectral analysis. Result: Ten compounds were isolated and their structures were identified as (4aR,9bS)-2,6-diactyl-3,4a,7,9-tetrahydroxy-8,9b-dimethyl-1-oxo-1,4,4a,9b-tetrahydrodibenzo[b,d]furan (1), (+)-usnic acid (2), orcinol (3), 18R-hydroxydihydroalloprotolichensterinic acid (4), 5, 8-epidioxy-5α, 8α-ergosta-6, 22E-dien-3β-ol (5), ethyl everninate(6), arabitol(7), apigenin 7-O-β-D-glucuronide(8), 3-hydroxy-5-methoxy-2-methylbenzoic acid(9), friedelin(10). Conclusion: Compound 1 was a new compound. Compound 8 was isolated from genu Usnea for the first time and compounds 3, 4 and 7 were isolated from U. longissima for the first time.

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Chemical constituents from Usnea longgisima, a traditional mongolian medicine

蒙药长松萝的化学成分研究

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