夏錄錄 李薇 梅文莉 楊理


摘 要:該文采用 ODS、硅膠、Sephadex LH-20 等柱色譜技術(shù),對柬埔寨野生柯拉斯那沉香(Aquilaria crassna)進(jìn)行了研究。結(jié)果表明:從柬埔寨柯拉斯那所產(chǎn)沉香的乙醇提取物中進(jìn)行分離共得到了10個化合物,包括一對對映異構(gòu)體(9a/9b)。經(jīng)波譜解析分別鑒定為6-甲氧基-2- [2-(3-羥基-4-甲氧基苯)乙基]色酮(1)、6-甲氧基-2- [2-(3-甲氧基-4-羥基苯)乙基]色酮(2)、6,7-二甲氧基-2-(2-苯乙基)色酮(3)、6-羥基-2-(2-苯乙基)色酮(4)、6-羥基-2- [2-(4-甲氧基苯)乙基]色酮(5)、8-氯-6-羥基-2- [2-(3-羥基-4-甲氧基苯)乙基]色酮(6)、8-氯-6-羥基-2- [2-(4-甲氧基苯)乙基]色酮(7)、oxidoagarochromone B(8)、4′-demethoxyaqusisnenoned(9)。其中,化合物6、7和9均為首次從柯拉斯那沉香中分離得到。活性測試結(jié)果顯示,化合物1和2對乙酰膽堿脂酶具有一定的抑制活性,化合物2對人慢性髓原白血病細(xì)胞K562具有較弱的抑制作用。
關(guān)鍵詞:柬埔寨, 沉香, 柯拉斯那, 化學(xué)成分, 乙酰膽堿脂酶抑制活性, 細(xì)胞毒活性
中圖分類號:Q946.91, R285.5
文獻(xiàn)標(biāo)識碼:A
文章編號:1000-3142(2019)04-0540-08
Abstract:Ten compounds, including one pair of enantiomers (9a/9b), were isolated from the ethanol extract of agarwood originating from Aquilaria crassna in Cambodia by comprehensive chromatographic techniques including ODS, silica gel and Sephadex LH-20. On the basis of spectroscopicdata, they were identified as 6-methoxy-2- [2-(3-hydroxy-4-methoxyphenyl) ethyl] chromone (1), 6-methoxy-2- [2-(3-methoxy-4-hydroxyphenyl) ethyl] chromone (2), 6,7-dimethoxy-2-(2-phenylethyl) chromone (3), 6-hydroxy-2-(2-phenylethyl) chromone (4), 6-hydroxy-2- [2-(4-methoxyphenyl) ethyl ] chromone(5), 8-chloro-6-hydroxy-2- [2- (3-hydroxy-4-methoxyphenyl) ethyl]chromone (6), 8-chloro-6-hydroxy-2- [2- (4-methoxyphenyl) ethyl] chromone (7), oxidoagarochromone B (8), 4′-demethoxyaqusisnenoned (9). Compounds 6, 7 and 9 were isolated from agarwood of A. crassna for the first time. Among those, compounds 1 and 2 showed inhibitory activities against acetylcholinesterase. Compound 2 had weak inhibitory effect on K562 cell lines.
Key words:Cambodia, agarwood, Aquilaria crassna, chemical constituents, acetylcholinesterase inhibitory activity, cytotoxic activity
沉香為瑞香科(Thymelaeaceae)沉香屬(Aquilaria)或擬沉香屬(Gyrinops)植物含有樹脂的干燥芯材(中國藥典委員會,2015)。沉香是傳統(tǒng)的名貴中藥和香料,其味辛、苦,性微溫,具有行氣止痛、溫中止嘔、納氣平喘等功效,主要用于治療胸腹脹悶疼痛、胃寒嘔吐呃逆、胃虛氣逆喘急等(中國藥典委員會,2015)。現(xiàn)代藥理學(xué)研究發(fā)現(xiàn),沉香具有鎮(zhèn)痛、鎮(zhèn)靜、抗炎、抗氧化、抗腫瘤、細(xì)胞毒、抑菌、降糖、抗抑郁等藥理作用(戴好富,2017;楊洋等,2016;康科星等,2017)。目前報道的沉香屬植物約有23種,主要分布于中國、泰國、印度、緬甸、老撾、柬埔寨、馬來西亞、印度尼西亞等東南亞國家(戴好富和梅文莉,2015)。國內(nèi)外學(xué)者對沉……