CN111892567B - 一种从山橿中提取的二氢黄酮类化合物及其制备方法与应用 - Google Patents
一种从山橿中提取的二氢黄酮类化合物及其制备方法与应用 Download PDFInfo
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Abstract
本发明涉及从山橿中提取的二氢黄酮类化合物及其制备方法与应用,可有效解决从山橿中制备新的化合物,开拓山橿药用新用途的问题,该化合物为异乌药萜烯黄烷酮和乌药萜烯黄烷酮甲醚,制备方法是:用乙醇对山橿提取,大孔吸附树脂湿法装柱,山橿乙醇提取物上样吸附,纯水冲洗除去杂质,收集乙醇洗脱液,减压回收乙醇,得到的纯化山橿总黄酮用甲醇超声溶解,微孔滤膜过滤得到进样溶液,根据化合物的在297nm波长下的吸收及出峰时间,定向收集相应的组分,减压回收溶剂,得异乌药萜烯黄烷酮和乌药萜烯黄烷酮甲醚。本发明从山橿中提取的异乌药萜烯黄烷酮和乌药萜烯黄烷酮甲醚具有抑制肿瘤细胞的活性,有效用于制备治疗肿瘤药物。
Description
技术领域
本发明涉及医药,特别是一种从山橿中提取的二氢黄酮类化合物及其制备方法与应用。
背景技术
山橿系樟科(Lauraceae)山胡椒属植物山橿(Lindera reflexaHemsl.)的干燥根,山橿性温,味辛,具有理气止痛、祛风解表、活血消肿等功效,在民间用其治疗慢性胃炎、胃溃疡有悠久的历史。
根据文献报道,山橿的化学成分主要有挥发油类、生物碱类、黄酮类、二苯乙烯类等。以药理活性为导向,对山橿的有效部位和有效成分进行系统研究后发现,山橿总黄酮是其主要有效活性成分。对山橿中的总黄酮进行了纯化工艺研究,利用大孔吸附树脂得到了纯化后的山橿总黄酮提取物。
目前对山橿的总黄酮进行化学成分分析时发现,除了已报道的化学成分外,仍有部分成分未得到系统的指认。这对山橿的临床研究和有效部位的质量控制极为不利。为了将山橿开发成治疗胃病的新药,创造良好的经济效益和社会效益,利用色谱技术,对山橿总黄酮中的未知成分进行定向的分离鉴定,得到新的化合物,开拓山橿药用的新用途是需要认真解决的技术问题。
发明内容
针对上述情况,为克服现有技术之缺陷,本发明之目的就是提供一种从山橿中提取的二氢黄酮类化合物及其制备方法与应用,可有效解决从山橿中制备新的化合物,开拓山橿药用新用途的问题。
本发明解决的技术方案是,一种从山橿中提取的二氢黄酮类化合物,为异乌药萜烯黄烷酮(Isolinderatone)和乌药萜烯黄烷酮甲醚(Methyllinderatone),分子结构式分别为:
异乌药萜烯黄烷酮(Isolinderatone)和乌药萜烯黄烷酮甲醚(Methyllinderatone)的制备方法,包括以下步骤:
(1)制备山橿总黄酮提取物:用乙醇对山橿进行提取,大孔吸附树脂湿法装柱,山橿乙醇提取物上样吸附,纯水冲洗除去杂质,收集乙醇洗脱液,减压回收乙醇,得纯化山橿总黄酮。
(2)制备进样溶液:称取纯化山橿总黄酮,用甲醇进行超声溶解,微孔滤膜过滤后得到进样溶液。
(3)定向分离目标化合物:根据化合物的在297nm波长下的吸收及出峰时间,定向收集相应的组分,减压回收溶剂,得到异乌药萜烯黄烷酮和乌药萜烯黄烷酮甲醚。
本发明所得到的化合物异乌药萜烯黄烷酮和乌药萜烯黄烷酮甲醚是首次从山橿中提取得到的,在目前的文献报道从大叶钓樟里分离得到该化合物,但是并没有相关生物活性的报道,也未公开有这两种化合物的标准品及提取分离纯化方法,本发明从山橿中提取的异乌药萜烯黄烷酮和乌药萜烯黄烷酮甲醚具有抑制肿瘤细胞的活性,有效用于制备治疗肿瘤药物,开拓山橿的药用新用途,有巨大的经济和社会效益。
附图说明
图1为本发明提取的山橿化合物分子结构式图。
图2为本发明的制备液相色谱图。
图3为本发明异乌药萜烯黄烷酮的1H-NMR图。
图4为本发明异乌药萜烯黄烷酮的13C-NMR图。
图5为本发明乌药萜烯黄烷酮甲醚的1H-NMR图。
图6为本发明乌药萜烯黄烷酮甲醚的13C-NMR图。
具体实施方式
以下结合附图和具体情况对本发明的具体实施方式作详细说明。
本发明在具体实施中,一种从山橿中提取的二氢黄酮类化合物,为异乌药萜烯黄烷酮(Isolinderatone)和乌药萜烯黄烷酮甲醚(Methyllinderatone),分子结构式见图1所示,其制备方法包括以下步骤:
(1)制备山橿提取物溶液:将山橿药材粉碎成粉,加入质量浓度为70%的乙醇超声提取3次,每次提取1小时,每次加入70%乙醇的量为山橿重量的12倍;合并三次的提取液,减压回收乙醇至提取液无醇味,得到浓缩液,浓缩液加入水稀释成相当于每1mL含生药0.05mg(0.05mg/mL生药)的山橿提取物溶液,备用;
(2)树脂处理及装柱:将大孔吸附树脂先用质量浓度95%乙醇浸泡12小时,用质量浓度95%乙醇清洗至乙醇洗脱液与水混合不呈白色混浊,再用蒸馏水洗至无醇味,按树脂柱子直径与柱高比1:8的比例将大孔吸附树脂湿法装柱;
(3)制备纯化山橿总黄酮:取步骤1制备的山橿提取物溶液上样,上样量为大孔吸附树脂重量的4倍,上样流速为1.0mL/min,上样完成后静置2小时,用大孔吸附树脂4倍重量的纯水冲洗杂质,再用大孔吸附树脂4倍量的质量浓度70%乙醇洗脱,收集洗脱液,减压回收乙醇,得纯化山橿总黄酮;
(4)制备进样溶液:取纯化山橿总黄酮0.50g,置于具塞锥形瓶中,加入甲醇100mL,记录重量,超声溶解,超声后补足重量,混匀,用0.45μm的微孔滤膜进行过滤,得到进样溶液;
(5)、对进样溶液梯度洗脱:在色谱条件为:色谱柱YMC-Pack ODS-A,250×20mml.D.S-5μm,12nm,检测波长297nm,流速为7mL·min-1,进样体积500μL进行装柱,流动相为甲醇-水梯度洗脱,洗脱梯度和洗脱时间分别为:第0-35min梯度洗脱液为甲醇︰水=80︰20,第35-45min梯度洗脱液为甲醇︰水=85︰15,第45-55min梯度洗脱液为甲醇︰水=100︰0,第55-60min梯度洗脱液为甲醇︰水=100︰0,第60-65min梯度洗脱液为甲醇︰水=80︰20,第65min以上梯度洗脱液为甲醇︰水=80︰20;
(6)、收集组分:收集49.9min的洗脱液,为组分1,收集55.7min的洗脱液,为组分2,组分1和组分2分别减压回收溶剂,得到异乌药萜烯黄烷酮(Isolinderatone)和乌药萜烯黄烷酮甲醚(Methyllinderatone)。
该化合物具有抑制肿瘤细胞的活性,有效用于制备治疗肿瘤药物,并经过多次反复试验均取得了相同或近似的结果,有关资料如下:
一、化合物的结构鉴定
经核磁共振光谱(1H-NMR、13C-NMR)及高分辨质谱(HR-ESI-MS)光谱技术鉴定,其中:
化合物异乌药萜烯黄烷酮(Isolinderatone)为黄色油状物,盐酸-镁粉反应呈阳性,证实为黄酮类化合物,HR-ESI-MS给出准分子离子峰m/z393.2051[M+H]+(calcd forC25H29O4,393.2060),确定分子式为C25H28O4。13C-NMR谱中有一组碳信号峰,δ131.7,126.4,35.1,41.0,23.7,30.9,23.1,28.6,16.7,21.9,提示该化合物中含有対薄荷烯基片段。此外,除去δ196.6的羰基碳后,芳香区还有14个碳信号,提示该化合物为黄酮类化合物;1H-NMR谱中芳香区有6个H,δ7.35-7.52(5H,m)为B环上的苯环H,δ5.97(1H,s)为A环上6位的H信号,δ5.57(1H,t,J=3.75Hz,4.4Hz)为对薄荷烯基片段上2”位上的H信号,δ5.07(1H,s)为2位上的H信号,δ3.66-3.73(1H,m)为3”位上的H信号,δ2.75(1H,m)和3.17(1H,m)为3位上的H信号,说明该化合物为二氢黄酮,δ12.60(1H,d,J=5.3Hz)为5位羟基H的信号,δ0.82(3H,d,J=6.8Hz),δ0.76(3H,d,J=6.6Hz),δ1.60(3H,s)分别为对薄荷烯基上9”和10”和7”上的H信号。其数据和现有的异乌药萜烯黄烷酮的数据基本一致,故确定其为异乌药萜烯黄烷酮(Isolinderatone),分子结构式为:
色谱测定情况如下表1:
表1该化合物异乌药萜烯黄烷酮(Isolinderatone)的1H-NMR和13C-NMR数据(inDMSO)
化合物乌药萜烯黄烷酮甲醚(Methyllinderatone)为黄色油状物,盐酸-镁粉反应呈阳性,证明为黄酮类化合物,HR-ESI-MS给出准分子离子峰m/z407.2208[M+H]+(calcdfor C26H31O4,407.2217),确定分子式为C26H30O4。13C-NMR谱中有一组碳信号峰,δ133.0,126.8,36.4,42.8,23.6,32.0,23.7,29.8,16.8,21.9,提示该化合物含有対薄荷烯基片段。此外,除去δ198.02的羰基碳后,芳香区还有14个碳信号,提示该化合物为黄酮类化合物;1H-NMR谱中芳香区有6个H,其中7.42(2H,t,J=7.05,7.7Hz),7.51(2H,d,J=7.3Hz),7.37(1H,d,J=7.25Hz)是苯环单取代时的典型信号,说明为B环上的氢;2.80(1H,dd,J=3.05,17.1),3.15(1H,dd,J=13.1,17.1Hz),5.43(1H,dd,J=2.9,2.9Hz)的氢信号,δ80.5,44.4的碳信号提示为二氢黄酮2,3位碳信号;13C-NMR谱中δ56.3和1H-NMR谱中的1.62(3H,s),是甲氧基的信号,数据与乌药萜烯黄烷酮甲醚的信号基本一致,综上可以得出SJ-10的结构为乌药萜烯黄烷酮甲醚(Methyllinderatone),分子结构式为:
色谱测定情况如下表2:
表2该化合物乌药萜烯黄烷酮甲醚(Methyllinderatone)的1H-NMR和13C-NMR数据(in MeOD)
本发明制备的异乌药萜烯黄烷酮(Isolinderatone)和乌药萜烯黄烷酮甲醚(Methyllinderatone)经实验,对人胃癌细胞(MGC803)和人肝癌细胞(SMMC-7721)具有细胞毒性,有关实验资料如下:
1.实验材料
人胃癌细胞株(MGC803)和人肝癌细胞(SMMC-7721)有河南中医药大学药理实验室提供,胎牛血清购买自Gibco公司。
2.细胞培养
MGC803细胞和SMMC-7721细胞培养于含有10%经加热灭活的胎牛血清、100U/mL青霉素、100μg/mL链霉素的RPMI1640培养基中,将培养皿置于37℃,5%CO2饱和湿度培养箱培养,每1-2天换培养液一次,当细胞融合度达到80%以上时,用胰蛋白酶进行消化传代。
3.MTT法
对数生长期细胞培养于96孔板内,每100μL(含5000个肿瘤细胞),置于37℃、5%CO2培养箱中培养24h,小心移除培养基,然后加入含有不同浓度的测试化合物的稀释液,设置5-6个剂量组,每组设置五个复孔,每孔100μL。对照组加入与给药组等体积的溶剂。置于37℃、5%CO2培养箱中培养48h,每孔加入20μL(1mg/mL)MTT溶液。37℃、5%CO2培养箱中孵育4h,弃去上清液,每孔加入150μL的DMSO溶解甲瓒颗粒,轻度振荡溶解,用酶联免疫检测仪在570nm波长处测定其吸光度值(OD),以溶剂对照处理的细胞作为对照,按照下面的公式计算药物对细胞的抑制率,根据计算得到的各浓度结果,通过GraphPad Prism 8软件处理,得到半数抑制浓度(IC50)。
4.实验结果
通过MTT法采用人胃癌细胞株(MGC803)和人肝癌细胞株(SMMC-7721)对异乌药萜烯黄烷酮(Isolinderatone)和乌药萜烯黄烷酮甲醚(Methyllinderatone)进行细胞毒活性测试,结果见表3。
表3化合物细胞毒活性测试结果
通过实验结果可以看出,异乌药萜烯黄烷酮和乌药萜烯黄烷酮甲醚虽然母核相同,但是因为取代基的不同,导致两者在细胞毒活性中存在很大的差异,本发明制备出的异乌药萜烯黄烷酮(Isolinderatone)和乌药萜烯黄烷酮甲醚(Methyllinderatone)对人胃癌细胞(MGC803)和人肝癌细胞(SMMC-7721)具有细胞毒活性,具有制备临床抗癌药的应用价值,开拓了山橿药材的新用途,原料丰富,制备方法易操作,易于推广应用,开拓了山橿的药物价值和商业价值,经济和社会效益显著。
Claims (2)
1.一种从山橿中提取的二氢黄酮类化合物的制备方法,其特征在于,该化合物为异乌药萜烯黄烷酮(Isolinderatone)和乌药萜烯黄烷酮甲醚(Methyllinderatone),分子结构分别是:
制备方法包括以下步骤:
(1)制备山橿提取物溶液:将山橿药材粉碎成粉,加入质量浓度为70%的乙醇超声提取3次,每次提取1小时,每次加入70%乙醇的量为山橿重量的12倍;合并三次的提取液,减压回收乙醇至提取液无醇味,得到浓缩液,浓缩液加入水稀释成相当于每1mL含生药0.05mg的山橿提取物溶液,备用;
(2)树脂处理及装柱:将大孔吸附树脂先用质量浓度95%乙醇浸泡12小时,用质量浓度95%乙醇清洗至乙醇洗脱液与水混合不呈白色混浊,再用蒸馏水洗至无醇味,按树脂柱子直径与柱高比1:8的比例将大孔吸附树脂湿法装柱;
(3)制备纯化山橿总黄酮:取步骤1制备的山橿提取物溶液上样,上样量为大孔吸附树脂重量的4倍,上样流速为1.0mL/min,上样完成后静置2小时,用大孔吸附树脂4倍重量的纯水冲洗杂质,再用大孔吸附树脂4倍量的质量浓度70%乙醇洗脱,收集洗脱液,减压回收乙醇,得纯化山橿总黄酮;
(4)制备进样溶液:取纯化山橿总黄酮0.50g,置于具塞锥形瓶中,加入甲醇100mL,记录重量,超声溶解,超声后补足重量,混匀,用0.45μm的微孔滤膜进行过滤,得到进样溶液;
(5)、对进样溶液梯度洗脱:在色谱条件为:色谱柱YMC-Pack ODS-A,250×20mml.D.S-5μm,12nm,检测波长297nm,流速为7mL·min-1,进样体积500μL进行装柱,流动相为甲醇-水梯度洗脱,洗脱梯度和洗脱时间分别为:第0-35min梯度洗脱液为甲醇︰水=80︰20,第35-45min梯度洗脱液为甲醇︰水=85︰15,第45-55min梯度洗脱液为甲醇︰水=100︰0,第55-60min梯度洗脱液为甲醇︰水=100︰0,第60-65min梯度洗脱液为甲醇︰水=80︰20,第65min以上梯度洗脱液为甲醇︰水=80︰20;
(6)、收集组分:收集49.9min的洗脱液,为组分1,收集55.7min的洗脱液,为组分2,组分1和组分2分别减压回收溶剂,得到异乌药萜烯黄烷酮(Isolinderatone)和乌药萜烯黄烷酮甲醚(Methyllinderatone)。
2.权利要求1所述方法制备的化合物异乌药萜烯黄烷酮(Isolinderatone)和乌药萜烯黄烷酮甲醚(Methyllinderatone)在制备抗胃癌药物和抗肝癌药物中的应用。
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