CN107353205A - 瘤果黑种草籽中的酯类化合物及其制备方法和用途 - Google Patents
瘤果黑种草籽中的酯类化合物及其制备方法和用途 Download PDFInfo
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Abstract
本发明涉及一种瘤果黑种草籽中的酯类合物及其制备方法和用途,该方法以瘤果黑种草籽为原料,利用有机溶剂进行提取,丙酮超声溶解提取物、反复的正相硅胶柱层析法、正相薄层板分析法和半制备型高效液相色谱分离得到瘤果黑种草籽中酯类化合物,活性实验结果证明:该瘤果黑种草籽中的酯类化合物具有抑制蛋白质酪氨酸磷酸酶1B(PTP1B)酶活性的作用,可用于糖尿病治疗药物及保健品的开发。
Description
技术领域
本发明涉及一种瘤果黑种草籽中新的酯类化合物及其制备方法和用途,具体说是以瘤果黑种草籽为原料,制备分离得到一个具有抑制蛋白质酪氨酸磷酸酶1B(PTP1B)活性的酯类化合物,及其在糖尿病治疗药物及保健品开发中的用途。
背景技术
瘤果黑种草属毛茛科黑种草属金莲花亚科植物,为多年生至一年生草本,少数为藤本或灌木,主要产于新疆,是新疆特有的植物资源,同时也是维吾尔医药常用药材。具有刺激消化、驱风止痛、补肾健脑、利尿、发汗和健胃以及平喘等作用,其作为药用植物,现已被收录于《中华人民共和国药典》、《中国药用植物志》、《维吾尔药志》。
黑种草属(Nigella)约有22种,药用植物除瘤果黑种草(NigellaglanduliferaFreyn)外,还包括果黑种草(Nigella sativa)和黑种草(Nigella damascenaL.)。目前,已经从黑种草属植物中分离得到的化合物种类有:皂苷类、生物碱类、黄酮类、苯丙素类、挥发油类、甾体类、酚类、多糖、饱和脂肪酸以及不饱和脂肪酸类。通过对黑种草属植物化学成分的研究,发现其具有抗炎、抗氧化、抗病毒、抗高血压、降血糖、改善血脂代谢、镇痛等多种药理活性。信学雷等通过对瘤果黑种草籽提取物组分的研究发现,某些提取物组分具有促进Apo-AI与SR-BI之间相互作用的功效,从而促进胆固醇的逆转运,达到降低血脂的作用;同时,以降糖活性为指导,分离纯化组分中的成分,证实了瘤果黑种草籽中存在具有抑制蛋白质酪氨酸磷酸酶1B(PTP1B)、α-葡萄糖苷酶、蛋白非酶糖化活性的成分。
发明内容
本发明的目的是,提供一种瘤果黑种草籽中的酯类化合物及其制备方法和用途,该方法以瘤果黑种草籽为原料,利用有机溶剂进行提取,丙酮超声溶解提取物、反复的正相硅胶柱层析法、正相薄层板分析法和半制备型高效液相色谱分离得到瘤果黑种草籽中新的酯类化合物,活性实验结果证明,该瘤果黑种草籽中的酯类化合物具有抑制蛋白质酪氨酸磷酸酶1B(PTP1B)酶活性的作用,可用于糖尿病治疗药物及保健品的开发。
本发明所述的一种瘤果黑种草籽中的酯类化合物,该化合物的结构为:
其中,该化合物的名称为:丁基(10E,12E)-9-羟基-十八碳-10,12-二烯酸酯。
所述瘤果黑种草籽中的酯类化合物的制备方法,按下列步骤进行:
a、将瘤果黑种草籽粉碎,用石油醚冷浸脱脂5次,脱脂后的残渣充分干燥,用体积浓度为50-100%的乙醇、甲醇或丙酮在室温下进行冷浸或渗漉提取,或加热回流提取,浓缩得总提物,再将浓缩物用丙酮超声溶解5-10次,滤去不溶物,收集丙酮部位,浓缩得丙酮部位;
b、将步骤a中得到的丙酮部位利用正相硅胶柱层析,以体积比为10:1,5:1,1:1的正己烷:乙酸乙酯为洗脱溶剂进行依次梯度洗脱,再用体积比为5:1,1:1,1:4正己烷:丙酮为洗脱溶剂进行梯度洗脱,收集正己烷:乙酸乙酯10:1和5:1的洗脱流分合并,得到含化合物(Ⅰ)的流分;
c、将步骤b中得到的得到含化合物(Ⅰ)的流分进行正相硅胶柱层析,以体积比为100:3,100:7,100:9,100:11,100:13,100:15,100:17,100:19,100:25的正己烷:乙酸乙酯为溶剂进行梯度洗脱,收集正己烷:乙酸乙酯体积比为100:7的洗脱流分,再将收集的流分用半制备型高效液相色谱进行分离,浓缩得到瘤果黑种草籽中的酯类化合物(Ⅰ),名称为:丁基(10E,12E)-9-羟基-十八碳-10,12-二烯酸酯。
所述的瘤果黑种草籽中的酯类化合物(Ⅰ)作为抑制蛋白质酪氨酸磷酸酶1B的作用。
所述的瘤果黑种草籽中的酯类化合物(Ⅰ)在制备治疗糖尿病药物中的用途。
所述的瘤果黑种草籽中的酯类化合物(Ⅰ)在制备糖尿病保健品中的用途。
本发明所述的瘤果黑种草籽中的酯类化合物及其制备方法和用途,通过所述方法获得的瘤果黑种草籽中的酯类化合物,活性测定实验结果表明:所述瘤果黑种草籽中的酯类化合物(Ⅰ)对蛋白质酪氨酸磷酸酶1B(PTP1B)酶活性的抑制作用呈现为剂量依赖型。实验结果说明,该酯类化合物具有降糖活性。
本发明所述的瘤果黑种草籽中的酯类化合物,结构鉴定过程如下:
化合物(Ⅰ)名称:丁基(10E,12E)-9-羟基-十八碳-10,12-二烯酸酯,理化性质及光谱数据结果和结构鉴定:淡黄色液体,[α]D 20+3.0(c 0.1,MeOH);UV(MeOH)λmax(logε)280(0.90)、223(1.72)和210(2.07),HR-ESI(-)MS:[M-H]-351.2904:分子式:C22H40O3;1H-NMR(CD3OD,400MHz),其1H和13C NMR数据归属见表1[400MHz(1H),100MHz(13C),溶剂:CD3OD]。
表1.化合物(Ⅰ)的1H和13C NMR数据[δ(ppm),J(Hz)]
附图说明
图1为本发明瘤果黑种草籽中的酯类化合物(Ⅰ)的1H核磁共振谱图;
图2为本发明瘤果黑种草籽中的酯类化合物(Ⅰ)的13C核磁共振谱图。
具体实施方式
实施例1
a、将2kg瘤果黑种草籽粉碎,用石油醚冷浸脱脂5次,脱脂后的残渣充分干燥,并分别用体积浓度为100%和50%乙醇,温度80℃加热回流提取,将提取液合并,浓缩,再将浓缩物用丙酮超声溶解5次,滤去不溶物,收集丙酮部位,浓缩得丙酮部位5.0g;
b、将步骤a中得到的丙酮部位利用正相硅胶柱层析,以体积比为10:1,5:1,1:1的正己烷:乙酸乙酯为洗脱溶剂进行依次梯度洗脱,再用体积比为5:1,1:1,1:4正己烷:丙酮为洗脱溶剂进行梯度洗脱,收集正己烷:乙酸乙酯10:1和5:1的洗脱流分合并,得到含化合物(Ⅰ)的流分;
c、将步骤b中得到的得到含化合物(Ⅰ)的流分进行正相硅胶柱层析,以体积比为100:3,100:7,100:9,100:11,100:13,100:15,100:17,100:19,100:25的正己烷:乙酸乙酯为溶剂进行梯度洗脱,收集正己烷:乙酸乙酯体积比为100:7的洗脱流分,再将收集的流分用半制备型高效液相色谱进行分离,分离条件:体积比为75:25的乙腈-H2O,流速3.5ml/min,收集保留时间为30分钟的流分,浓缩得到瘤果黑种草籽中的酯类化合物(Ⅰ),名称为:丁基(10E,12E)-9-羟基-十八碳-10,12-二烯酸酯。
实施例2
a、将2kg瘤果黑种草籽粉碎,用石油醚冷浸脱脂5次,脱脂后的残渣充分干燥,并用体积浓度为90%和60%乙醇室温下渗漉提取,将提取液合并,浓缩,再将浓缩物用丙酮超声溶解7次,滤去不溶物,收集丙酮部位,浓缩得丙酮部位4.8g;
b、将步骤a中得到的丙酮部位利用正相硅胶柱层析,以体积比为10:1,5:1,1:1的正己烷:乙酸乙酯为洗脱溶剂进行依次梯度洗脱,再用体积比为5:1,1:1,1:4正己烷:丙酮为洗脱溶剂进行梯度洗脱,收集正己烷:乙酸乙酯10:1和5:1的洗脱流分合并,得到含化合物(Ⅰ)的流分;
c、将步骤b中得到的得到含化合物(Ⅰ)的流分进行正相硅胶柱层析,以体积比为100:3,100:7,100:9,100:11,100:13,100:15,100:17,100:19,100:25的正己烷:乙酸乙酯为溶剂进行梯度洗脱,收集正己烷:乙酸乙酯体积比为100:7的洗脱流分,再将收集的流分用半制备型高效液相色谱进行分离,分离条件:体积比为75:25的乙腈-H2O,流速3.5ml/min,收集保留时间为30分钟的流分,浓缩得到瘤果黑种草籽中的酯类化合物(Ⅰ),名称为:丁基(10E,12E)-9-羟基-十八碳-10,12-二烯酸酯。
实施例3
a、将2kg瘤果黑种草籽粉碎,用石油醚冷浸脱脂5次,脱脂后的残渣充分干燥,并用体积浓度为100%和60%甲醇冷浸提取,将提取液合并,浓缩,再将浓缩物用丙酮超声溶解8次,滤去不溶物,收集丙酮部位,浓缩得丙酮部位5.1g;
b、将步骤a中得到的丙酮部位利用正相硅胶柱层析,以体积比为10:1,5:1,1:1的正己烷:乙酸乙酯为洗脱溶剂进行依次梯度洗脱,再用体积比为5:1,1:1,1:4正己烷:丙酮为洗脱溶剂进行梯度洗脱,根据薄层色谱法,收集正己烷:乙酸乙酯10:1和5:1的洗脱流分合并,得到含化合物(Ⅰ)的流分;
c、将步骤b中得到的得到含化合物(Ⅰ)的流分进行正相硅胶柱层析,以体积比为100:3,100:7,100:9,100:11,100:13,100:15,100:17,100:19,100:25的正己烷:乙酸乙酯为溶剂进行梯度洗脱,收集正己烷:乙酸乙酯体积比为100:7的洗脱流分,再将收集的流分用半制备型高效液相色谱进行分离,分离条件:体积比为75:25的乙腈-H2O,流速3.5ml/min,收集保留时间为30分钟的流分,浓缩得到瘤果黑种草籽中的酯类化合物(Ⅰ),名称为:丁基(10E,12E)-9-羟基-十八碳-10,12-二烯酸酯。
实施例4
a、将2kg瘤果黑种草籽粉碎,用石油醚冷浸脱脂5次,脱脂后的残渣充分干燥,并用体积浓度为90%和50%甲醇温度80℃加热回流提取,将提取液合并,浓缩,再将浓缩物用丙酮超声溶解10次,滤去不溶物,收集丙酮部位,浓缩得丙酮部位5.15g;
b、将步骤a中得到的丙酮部位利用正相硅胶柱层析,以体积比为10:1,5:1,1:1的正己烷:乙酸乙酯为洗脱溶剂进行依次梯度洗脱,再用体积比为5:1,1:1,1:4正己烷:丙酮为洗脱溶剂进行梯度洗脱,根据薄层色谱法,收集正己烷:乙酸乙酯10:1和5:1的洗脱流分合并,得到含化合物(Ⅰ)的流分;
c、将步骤b中得到的得到含化合物(Ⅰ)的流分进行正相硅胶柱层析,以体积比为100:3,100:7,100:9,100:11,100:13,100:15,100:17,100:19,100:25的正己烷:乙酸乙酯为溶剂进行梯度洗脱,收集正己烷:乙酸乙酯体积比为100:7的洗脱流分,再将收集的流分用半制备型高效液相色谱进行分离,分离条件:体积比为75:25的乙腈-H2O,流速3.5ml/min,收集保留时间为30分钟的流分,浓缩得到瘤果黑种草籽中的酯类化合物(Ⅰ),名称为:丁基(10E,12E)-9-羟基-十八碳-10,12-二烯酸酯。
实施例5
a、将2kg瘤果黑种草籽粉碎,用石油醚冷浸脱脂5次,脱脂后的残渣充分干燥,并用体积浓度为70%和50%的丙酮温度80℃加热回流提取,将提取液合并,浓缩,再将浓缩物用丙酮超声溶解10次,滤去不溶物,收集丙酮部位,浓缩得丙酮部位5.1g;
b、将步骤a中得到的丙酮部位利用正相硅胶柱层析,以体积比为10:1,5:1,1:1的正己烷:乙酸乙酯为洗脱溶剂进行依次梯度洗脱,再用体积比为5:1,1:1,1:4正己烷:丙酮为洗脱溶剂进行梯度洗脱,根据薄层色谱法,收集正己烷:乙酸乙酯10:1和5:1的洗脱流分合并,得到含化合物(Ⅰ)的流分;
c、将步骤b中得到的得到含化合物(Ⅰ)的流分进行正相硅胶柱层析,以体积比为100:3,100:7,100:9,100:11,100:13,100:15,100:17,100:19,100:25的正己烷:乙酸乙酯为溶剂进行梯度洗脱,收集正己烷:乙酸乙酯体积比为100:7的洗脱流分,再将收集的流分用半制备型高效液相色谱进行分离,分离条件:体积比为75:25的乙腈-H2O,流速3.5ml/min,收集保留时间为30分钟的流分,浓缩得到瘤果黑种草籽中的酯类化合物(Ⅰ),名称为:丁基(10E,12E)-9-羟基-十八碳-10,12-二烯酸酯。
实施例6
a、将2kg瘤果黑种草籽粉碎,用石油醚冷浸脱脂5次;脱脂后的残渣充分干燥,并用体积浓度为100%和60%丙酮室温渗漉提取,将提取液合并,浓缩,再将浓缩物用丙酮超声溶解10次,滤去不溶物,收集丙酮部位,浓缩得丙酮部位4.9g;
b、将步骤a中得到的丙酮部位利用正相硅胶柱层析,以体积比为10:1,5:1,1:1的正己烷:乙酸乙酯为洗脱溶剂进行依次梯度洗脱,再用体积比为5:1,1:1,1:4正己烷:丙酮为洗脱溶剂进行梯度洗脱,根据薄层色谱法,收集正己烷:乙酸乙酯10:1和5:1的洗脱流分合并,得到含化合物(Ⅰ)的流分;
c、将步骤b中得到的得到含化合物(Ⅰ)的流分进行正相硅胶柱层析,以体积比为100:3,100:7,100:9,100:11,100:13,100:15,100:17,100:19,100:25的正己烷:乙酸乙酯为溶剂进行梯度洗脱,收集正己烷:乙酸乙酯体积比为100:7的洗脱流分,再将收集的流分用半制备型高效液相色谱进行分离,分离条件:体积比为75:25的乙腈-H2O,流速3.5ml/min,收集保留时间为30分钟的流分,浓缩得到瘤果黑种草籽中的酯类化合物(Ⅰ),名称为:丁基(10E,12E)-9-羟基-十八碳-10,12-二烯酸酯。
实施例7
瘤果黑种草籽中的酯类化合物(Ⅰ)抑制酪氨酸磷酸酶1B酶活性的测试:
1.筛选方法:对-硝基苯基磷酸二钠(pNPP)作为底物,以阳性药物3-(3,5-二溴-4-羟基-苯甲酰基)-2-乙基-苯并呋喃-6-磺酸基-(4-(噻唑-2-磺酸胺基)-苯胺为对照,利用酶标仪进行蛋白酪氨酸磷酸酶1B抑制剂的高通量筛选,根据蛋白酪氨酸磷酸酶1B水解产物的磷酸基团而产生颜色反应来测定蛋白酪氨酸磷酸酶1B的活性;
1.1蛋白酪氨酸磷酸酶1B工作液浓度的确定:
取0.5-1μL酶,用300μL磷酸缓冲液稀释并充分混匀;取179μL稀释好的酶液于96孔板,再加1μL二甲亚砜(溶剂空白),震匀后放置5min;5min后,加入20μL底物-35mM对硝基苯磷酸二钠盐,充分震匀后室温避光反应30min;酶标仪(SpectraMax MD5,美国分子仪器公司)405nm处检测OD值,若OD值为0.8±0.1,此时的酶溶液浓度作为工作液浓度,若OD值在0.8±0.1范围之外,则根据OD微调酶的加入量;
1.2筛选步骤:
根据酶工作液浓度配制所需体积的酶工作液:取179μL蛋白酪氨酸磷酸酶1B酶工作液加入96孔板,再加1μL样品(或者二甲亚砜做空白),震匀后反应5min,再过5min后,加入20μL对硝基苯磷酸二钠盐溶液,震匀后室温避光反应30min;酶标仪405nm处检测OD值,蛋白酪氨酸磷酸酶1B抑制实验设计如表2:
表2蛋白酪氨酸磷酸酶1B抑制实验设计
阳性对照化合物为:3-(3,5-二溴-4-羟基-苯甲酰基)-2-乙基-苯并呋喃-6-磺酸基-(4-(噻唑-2-磺酸胺基)-苯胺;
抑制率(%)=[1-(样品组–样品空白组)/(酶活组–酶活空白组)]×100%;
表3瘤果黑种草籽中的酯类化合物(Ⅰ)抑制蛋白酪氨酸磷酸酶1B酶活性的实验结果
样品 | 半数抑制浓度(微摩尔) |
化合物(Ⅰ) | 7.38±0.14 |
蛋白酪氨酸磷酸酶1B抑制剂 | 1.81±0.02 |
由表3可知,瘤果黑种草籽中的酯类化合物(Ⅰ)具有抑制蛋白酪氨酸磷酸酶1B酶活性的作用。
Claims (5)
1.一种瘤果黑种草籽中的酯类化合物,其特征在于该化合物的结构为:
(Ⅰ)
其中,该化合物的名称为:丁基(10E,12E)-9-羟基-十八碳-10,12-二烯酸酯。
2.根据权利要求1所述瘤果黑种草籽中的酯类化合物的制备方法,其特征在于按下列步骤进行:
a、将瘤果黑种草籽粉碎,用石油醚冷浸脱脂5次,脱脂后的残渣充分干燥,用体积浓度为50-100%的乙醇、甲醇或丙酮在室温下进行冷浸或渗漉提取,或加热回流提取,浓缩得总提物,再将浓缩物用丙酮超声溶解5-10次,滤去不溶物,收集丙酮部位,浓缩得丙酮部位;
b、将步骤a中得到的丙酮部位利用正相硅胶柱层析,以体积比为10:1,5:1,1:1的正己烷:乙酸乙酯为洗脱溶剂进行依次梯度洗脱,再用体积比为5:1,1:1,1:4正己烷:丙酮为洗脱溶剂进行梯度洗脱,收集正己烷:乙酸乙酯10:1和5:1的洗脱流分合并,得到含化合物(Ⅰ)的流分;
c、将步骤b中得到的得到含化合物(Ⅰ)的流分进行正相硅胶柱层析,以体积比为100:3,100:7,100:9,100:11,100:13,100:15,100:17,100:19,100:25的正己烷:乙酸乙酯为溶剂进行梯度洗脱,收集正己烷:乙酸乙酯体积比为100:7的洗脱流分,再将收集的流分用半制备型高效液相色谱进行分离,浓缩得到瘤果黑种草籽中的酯类化合物(Ⅰ),名称为:丁基(10E,12E)-9-羟基-十八碳-10,12-二烯酸酯。
3.根据权利要求1 所述的瘤果黑种草籽中的酯类化合物(Ⅰ)在抑制蛋白质酪氨酸磷酸酶1B中的作用。
4.根据权利要求1 所述的瘤果黑种草籽中的酯类化合物(Ⅰ)在制备治疗糖尿病药物中的用途。
5.根据权利要求1 所述的瘤果黑种草籽中的酯类化合物(Ⅰ)在制备糖尿病保健品中的用途。
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