CN101857616A - 葛根素葡萄糖衍生物的一种制备方法 - Google Patents
葛根素葡萄糖衍生物的一种制备方法 Download PDFInfo
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- -1 puerarin glucose derivatives Chemical class 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- HKEAFJYKMMKDOR-VPRICQMDSA-N puerarin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1C1=C(O)C=CC(C2=O)=C1OC=C2C1=CC=C(O)C=C1 HKEAFJYKMMKDOR-VPRICQMDSA-N 0.000 claims abstract description 65
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002904 solvent Substances 0.000 claims abstract description 4
- MNZMECMQTYGSOI-UHFFFAOYSA-N acetic acid;hydron;bromide Chemical compound Br.CC(O)=O MNZMECMQTYGSOI-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000006136 alcoholysis reaction Methods 0.000 claims abstract 3
- 238000006243 chemical reaction Methods 0.000 claims description 24
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 18
- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 0.000 claims description 12
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- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 4
- 125000002252 acyl group Chemical group 0.000 claims description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 4
- 235000015320 potassium carbonate Nutrition 0.000 claims description 4
- 235000017550 sodium carbonate Nutrition 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 239000002585 base Substances 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000005893 bromination reaction Methods 0.000 claims description 2
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 claims description 2
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- 238000010189 synthetic method Methods 0.000 claims 4
- 238000007269 dehydrobromination reaction Methods 0.000 claims 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims 2
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- 230000031709 bromination Effects 0.000 claims 1
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 abstract description 7
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- 235000010575 Pueraria lobata Nutrition 0.000 description 6
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- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 3
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- OVRNDRQMDRJTHS-FMDGEEDCSA-N N-acetyl-beta-D-glucosamine Chemical compound CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O OVRNDRQMDRJTHS-FMDGEEDCSA-N 0.000 description 2
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- CJWQYWQDLBZGPD-UHFFFAOYSA-N isoflavone Natural products C1=C(OC)C(OC)=CC(OC)=C1C1=COC2=C(C=CC(C)(C)O3)C3=C(OC)C=C2C1=O CJWQYWQDLBZGPD-UHFFFAOYSA-N 0.000 description 2
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- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
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- RTRZOHKLISMNRD-UHFFFAOYSA-N isoflavanone Chemical compound C1OC2=CC=CC=C2C(=O)C1C1=CC=CC=C1 RTRZOHKLISMNRD-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明涉及葛根素葡萄糖衍生物的一种制备方法。葡萄糖经醋酐全乙酰化,溴化氢醋酸溶液溴化制得α-溴代四乙酰葡萄糖,再与葛根素在碱性无水溶剂中反应得7-羟基-4′-(1-β-D-2,3,4,6-乙酰基葡萄糖基)葛根素,最后经甲醇醇解得7-羟基-4′-(β-D-吡喃葡萄糖苷基)葛根素。经水溶性测定,7-羟基-4′-(β-D-吡喃葡萄糖苷基)葛根素的水溶性是葛根素的15.3倍。
Description
技术领域
本发明属于医药技术领域,主要涉及葛根素葡萄糖衍生物的一种制备方法。
技术背景
葛根素(puerarin)是由豆科植物野葛甘葛藤根中提取的一种黄酮苷,1959年日本柴田承二证明异黄酮类化合物是葛根的主要有效成分,其中含量较多的为葛根素,1974年,我国方起程等人成功地从葛根中提取出葛根素。1993年葛根素被卫生部批准用于临床,多制成注射剂、滴眼剂,应用于心脏血管疾病(狄灵,于燕,杨海侠等,葛根素对心血管病作用机制的研究进展,中西医结合心脑血管杂志,2009,7(3):328-341)。
葛根素中的异黄烷酮的结构决定了葛根素的脂溶性和水溶性都很差,生物利用度低。因此,提高葛根素的生物利用度,改善药效,必须对葛根素进行结构修饰与改造。
蒋洁蓉等人(氧化微杆菌糖基化葛根素的研究,南京师范大学研究生学位论文,2007)用微生物转化的方式得到了葛根素-7-O-葡萄糖苷,水溶性增加了18倍,葛根素-7-O-葡萄糖苷的舒张血管作用也略优于天然葛根素。Dubey,Saraswati;Saxena,Prachi;Pursotum,R.K(Major isoflavones identification in the rootof Pueraria lobata,Journal of Environmental Research and Development,(2008),2(3),413-420)通过高效液相色谱-质谱联用分析技术分析葛根中存在天然7-羟基-4′-(1-β-D-葡萄糖基)葛根素化合物,没有文献报道该化合物合成方法,以及水溶性等的测定。
本发明是依据葛根素为异黄酮碳甙,7,4′-二羟基为活性基团,其中7位的羟基因8位糖的位阻影响,活性较4′-羟基弱(张首国,朱晓伟,王林等.葛根素衍生物的合成及抗缺氧活性研究,中国药物化学杂志,2008,18(2):90-95)。利用这性质,在4′位引入糖,寻找一种合成天然7-羟基-4′-(1-β-D-葡萄糖基)葛根素化合物的方法,实现亲脂性和亲水性好的天然7-羟基-4′-(1-β-D-葡萄糖基)葛根素的工业化生产,从而促进葛根素的应用推广。
发明内容
为了克服现有葛根素的不足,本发明的目的在于提供葛根素葡萄糖衍生物的一种制备方法。
本发明涉及具有通式Ⅰ所示的葛根素葡萄糖衍生物的一种制备方法:先将葡萄糖经醋酐乙酰化,溴化氢醋酸溶液溴化反应制备α-溴代四乙酰葡萄糖,再与葛根素在碱和丙酮溶液中醚化得7-羟基-4′-(2,3,4,6-四乙酰基-β-D-吡喃葡萄糖苷基)葛根素,最后用碱和甲醇醇解得目标产物7-羟基-4′-(β-D-吡喃葡萄糖苷基)葛根素。
其中R分别为四乙酰葡萄糖基、葡萄糖基。
具体实施方式
实施例1:7-羟基-4′-(1-β-D-2,3,4,6-乙酰基-葡萄糖基)葛根素
在带有搅拌器、回流冷凝管和温度计的250mL四口烧瓶中,依次加入10.12g葡萄糖,8.24g无水醋酸钠,55mL乙酸酐,缓慢升温至95℃,保温反应3h,将反应液倒入碎冰中,先静置30min,后搅拌,过滤,将滤饼用水充分洗涤后得白色固体化合物全乙酰葡萄糖14.58g,收率66.5%,熔点129-130℃(文献值126-130℃)。
向100mL单口瓶中加入全乙酰葡萄糖3.07g(7.9mmol),二氯甲烷20mL,待全溶后加入10mL质量分数为30%的溴化氢的醋酸溶液,室温保温2h,将反应液倒入到碎冰中,加二氯甲烷20mL×3提取,合并有机层,用5%的碳酸氢钠洗涤至中性,再用饱和盐水洗涤,无水硫酸钠干燥,减压除去溶剂,用乙醚和石油醚(v/v=1∶5)重结晶得化合物α-溴代四乙酰葡萄糖2.56g,收率79.4%,mp85-86℃。
向500mL单口瓶中加入葛根素2.91g(7mmol),丙酮300mL,碳酸钾1.93g(14mmol),加入α-溴代四乙酰葡萄糖5.74g(14mmol),室温反应至原料消失(TLC跟踪),过滤除去无机盐,减压浓缩得粗产物,再经柱层析得3.20g 7-羟基-4′-(1-β-D-2,3,4,6-乙酰基葡萄糖基)葛根素,收率61.4%。1H NMR(DMSO-d6,500MHz):δ9.26(d,J=6.0Hz,1H,CH),8.17(d,1H,Ar-H),7.84(q,J=3.3,9.0Hz,1H,Ar-H),7.18-7.12(m,3H,CH2,Ar-H),6.57(m,2H,CH,Ar-H),5.48(m,1H,CH),5.17(q,J=9.6,11.7Hz,1H,CH),4.76-4.61(m,3H,OH),4.49(m,1H,CH2-H),4.44(m,1H,CH2-H),3.93-3.46(m,6H,CH),1.78(m,12H,CH3);LC-MS m/z:703(M-43),415。
实施例2:7-羟基-4′-(1-β-D-2,3,4,6-乙酰基-葡萄糖基)葛根素
向500mL单口瓶中加入葛根素4.55g(10.5mmol),丙酮300mL,碳酸钠2.23g(21mmol),加入α-溴代四乙酰葡萄糖8.61g(21mmol),室温反应至原料消失(TLC跟踪),过滤除去无机盐,减压浓缩得粗产物,经柱层析得4.68g 7-羟基-4′-(1-β-D-2,3,4,6-乙酰基葡萄糖基)葛根素,收率59.8%。
实施例3:7-羟基-4′-(1-β-D-2,3,4,6-乙酰基-葡萄糖基)葛根素
向500mL单口瓶中加入葛根素3.06g(7.35mmol),丙酮300mL,碳酸氢钠1.24g(14.7mmol),加入α-溴代四乙酰葡萄糖6.03g(14.7mmol),室温反应至原料消失(TLC跟踪),过滤除去无机盐,减压浓缩得粗产物,经柱层析得2.81g 7-羟基-4′-(1-β-D-2,3,4,6-乙酰基葡萄糖基)葛根素,收率51.2%。
实施例4:7-羟基-4′-(1-β-D-2,3,4,6-乙酰基-葡萄糖基)葛根素
向500mL单口瓶中加入葛根素3.67g(8.82mmol),丙酮300mL,碳酸氢钾1.76g(17.64mmol),加入α-溴代四乙酰葡萄糖7.23g(17.64mmol),室温反应至原料消失(TLC跟踪),过滤除去无机盐,减压浓缩得粗产物,经柱层析得2.24g
7-羟基-4′-(1-β-D-2,3,4,6-乙酰基葡萄糖基)葛根素,收率34.1%。
实施例5:7-羟基-4′-(1-β-D-2,3,4,6-乙酰基-葡萄糖基)葛根素
向500mL单口瓶中加入葛根素4.04g(9.7mmol),丙酮300mL,吡啶1.55g(19.4mmol),加入α-溴代四乙酰葡萄糖7.95g(19.4mmol),室温反应至原料消失(TLC跟踪),减压浓缩得粗产物,经柱层析得4.36g 7-羟基-4′-(1-β-D-2,3,4,6-乙酰基葡萄糖基)葛根素,收率60.3%。
实施例6:7-羟基-4′-(1-β-D-2,3,4,6-乙酰基-葡萄糖基)葛根素
向500mL单口瓶中加入葛根素5.24g(12.6mmol),丙酮300mL,三乙胺2.54g(25.2mmol),加入α-溴代四乙酰葡萄糖10.33g(25.2mmol),室温反应至原料消失(TLC跟踪),减压浓缩得粗产物,经柱层析得4.66g 7-羟基-4′-(1-β-D-2,3,4,6-乙酰基葡萄糖基)葛根素,收率49.6%。
实施例7:7-羟基-4′-(1-β-D-2,3,4,6-乙酰基-葡萄糖基)葛根素
向500mL单口瓶中加入葛根素2.34g(5.6mmol),丙酮300mL,二乙胺0.82g(11.2mmol),加入α-溴代四乙酰葡萄糖4.61g(11.2mmol),室温反应至原料消失(TLC跟踪),减压浓缩得粗产物,经柱层析得2.28g 7-羟基-4′-(1-β-D-2,3,4,6-乙酰基-葡萄糖基)葛根素,收率54.6%。
实施例8:7-羟基-4′-(1-β-D-2,3,4,6-乙酰基-葡萄糖基)葛根素
反应过程如实施例1,在0℃反应,收率42.2%;
实施例9:7-羟基-4′-(1-β-D-葡萄糖基)葛根素
反应过程如实施例1,在50℃反应,收率34.7%。
实施例10:7-羟基-4′-(1-β-D-葡萄糖基)葛根素
取2.11g化合物7-羟基-4′-(1-β-D-2,3,4,6-乙酰基-葡萄糖基)葛根素加入到100mL单口瓶中,加甲醇30mL和碳酸钠2.21g,室温反应0.5h,过滤除去无机盐,浓缩得产物7-羟基-4′-(1-β-D-葡萄糖基)葛根素1.47g,收率90.5%。1H NMR(DMSO-d6,300MHz):δ8.36(d,J=10.0Hz,1H,CH),8.05(q,H,Ar-H),7.33(m,3H,Ar),6.72(m,2H,Ar-H),4.95(m,4H,OH,CH),4.28-3.05(m,12H,CH);LC-MS m/z:579(M+1),417.
实施例11:7-羟基-4′-(1-β-D-葡萄糖基)葛根素
取2.09g(2.8mmol)化合物7-羟基-4′-(1-β-D-2,3,4,6-乙酰基-葡萄糖基)葛根素加入到100mL单口瓶中,加甲醇30mL和碳酸钾1.1g(8mmol),室温反应0.5h,过滤除去无机盐,浓缩得产物7-羟基-4′-(1-β-D-葡萄糖基)葛根素1.46g,收率89.4%。
实施例12:7-羟基-4′-(1-β-D-葡萄糖基)葛根素
取1.69g(2.27mmol)化合物7-羟基-4′-(1-β-D-2,3,4,6-乙酰基-葡萄糖基)葛根素加入到100mL单口瓶中,加甲醇30mL和碳酸氢钠0.544g(6.4mmol),室温反应0.5h,过滤除去无机盐,浓缩得产物7-羟基-4,-(1-β-D-葡萄糖基)葛根素1.11g,收率84.3%。
实施例13:7-羟基-4′-(1-β-D-葡萄糖基)葛根素
取2.03g(2.72mmol)化合物7-羟基-4′-(1-β-D-2,3,4,6-乙酰基-葡萄糖基)葛根素加入到100mL单口瓶中,加甲醇30mL和碳酸氢钾0.77g(7.7mmol),室温反应0.5h,过滤除去无机盐,浓缩得产物7-羟基-4′-(1-β-D-葡萄糖基)葛根素1.31g,收率83.6%。
实施例14:7-羟基-4′-(1-β-D-葡萄糖基)葛根素
反应过程如实施例9,在0℃反应4h,收率85.4%。
实施例15:7-羟基-4′-(1-β-D-葡萄糖基)葛根素
反应过程如实施例9,在50℃反应0.3h,收率87.6%。
Claims (5)
2.如权利要求1所述的合成方法,其特征在于:脱溴化氢加的敷酸剂是碳酸氢钠、碳酸钠、碳酸氢钾、碳酸钾、吡啶、三乙胺或二乙胺。
3.如权利要求1所述的合成方法,其特征在于:脱溴化氢的反应温度在0~50℃。
4.如权利要求1所述的合成方法,其特征在于:醇解用的碱是碳酸氢钠、碳酸钠、碳酸钾或碳酸氢钾。
5.如权利要求1所述的合成方法,其特征在于:醇解的反应温度在0~50℃。
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