CN1569902A - 一种活性寡糖衍生物及其制备方法 - Google Patents

一种活性寡糖衍生物及其制备方法 Download PDF

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CN1569902A
CN1569902A CN 03150251 CN03150251A CN1569902A CN 1569902 A CN1569902 A CN 1569902A CN 03150251 CN03150251 CN 03150251 CN 03150251 A CN03150251 A CN 03150251A CN 1569902 A CN1569902 A CN 1569902A
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杜宇国
华玉夏
魏国华
顾国锋
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Research Center for Eco Environmental Sciences of CAS
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Abstract

本发明涉及一种具有潜在药用价值的活性寡糖衍生物及其制备方法。已显示出的活性包括抗艾滋病病毒、抗凝血、抗肿瘤等活性。本发明公开该化合物的结构及其制备方法。该化合物是一种硫酸化寡糖类化合物,具有上图所示的结构。

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一种活性寡糖衍生物及其制备方法
硫酸酯化的多糖具有为人所知的抗爱滋病病毒活性,其中硫酸酯化的β-D-(1→4)-木吡喃聚糖[Antiviral Res.,1998,916,335-343;Antiviral Chem.Chemother.,1990,11,41-46;J.Viral.,1991,65,1543-1550]和硫酸酯化的β-D-(1→3)-吡喃葡萄寡糖[Macromolecules,1990,23,3717-3722]都具有较强的体外抗爱滋病毒活性,目前已进入一期临床试验;硫酸酯化的α-L-岩藻吡喃聚糖具有很好的抗凝血和抗肿瘤活性[Biochem.Pharm.,2003,65,173-179];硫酸酯化的β-D-(1→3)-半乳吡喃聚糖具有抗凝血活性[Carbohydr.Res.,2002,337,2231-2238]。基于我们以前在抗肿瘤寡糖合成的经验(中国专利申请号:001078356),我们设计了硫酸化葡萄吡喃寡糖为目标化合物,通过分子表面巨大的负电荷密度实现其生物活性。所以我们的目标化合物为:甲基2,3,4,6-四-硫酸酯-β-D-葡萄吡喃糖基-(1→6)-[2,3,4,6-四-硫酸酯-β-D-葡萄吡喃糖基-(1→3)]-2,4-二-硫酸酯-β-D-葡萄吡喃糖基-(1→6)-2,3,4-三-硫酸酯-β-D-葡萄吡喃糖基-(1→6)-[2,3,4,6-四-硫酸酯-β-D-葡萄吡喃糖基-(1→3)]-2,4-二-硫酸酯-α-D-葡萄吡喃糖苷(如下图)。我们采用“3+3”的合成策略,以1位硫苷衍生物三糖为供体[见文献:Org.Lett.,2000,2,3793-3800],1位甲基苷,6’位硅烷化的三糖衍1生物为受体,制备了硫酸化六糖目标化合物。
Figure A0315025100031
本发明的目的是提供一种新设计的非天然产物分子,提出了一种可行的合成方法来制备目标分子,其核心是使用适当修饰过的三糖硫苷为构筑模块,使之成为可重复使用的糖基供体。
下面结合实施例对本发明进行详细地说明。
一般方法:结构检定所需的1HNMR,13CNMR,1H-1HCOSY和1H-13CCOSY谱用Bruker ARX400在CDCl3中测得。化学位移以Me4Si为内标,以ppm为单位表示。质谱用MALTI-TOF-MS,用CCA做基质。薄层色谱(TLC)由HF254硅胶板上用30%(v/v)的硫酸甲醇溶液活紫外检测器检测。柱色谱采用100-200目的硅胶,以乙酸乙酯-石油醚为淋洗液。
苯基2,3,4-三-氧-乙酰基-6-氧-二甲基叔丁基硅基-β-D-葡萄吡喃糖基-(1→6)-[2,3,4,6-四-氧-乙酰基-β-D-葡萄吡喃糖基-(1→3)]-2,4-二-氧-乙酰基-1-硫-β-D-葡萄吡喃糖苷(9)
Figure A0315025100041
将化合物6(2g,我们以前的工作:Org.Lett.,2000,2,3793-3800)和1个当量的7(按文献Tetrahedron,1993,49,7301-7316和J.Am.Chem.Soc.,1999,121,12196-12197)溶于10mL无水二氯甲烷中,-42℃下加入三甲基硅基三氟甲磺酸酯(0.1当量),反应2小时后,将8(Org.Lett.,2000,2,3793-3800)滴加入该体系。升温至零度,补加0.1当量的催化剂,继续反应1小时,原料消失后,减压浓缩,硅胶柱纯化,乙酸乙酯∶石油醚(1∶1)洗脱,得到泡状物9(71%)。
甲基2,3,4-三-氧-乙酰基-6-氧-二甲基叔丁基硅基-β-D-葡萄吡喃糖基-(1→6)-[2,3,4,6-四-氧-乙酰基-β-D-葡萄吡喃糖基-(1→3)]-2,4-二-氧-乙酰基-β-D-葡萄吡喃糖苷(3)
将化合物9(5g)溶于无水甲醇中(20mL)。零度下加入氮-碘代琥珀酰亚胺(1.5当量)和三甲基硅基三氟甲磺酸酯(0.1当量),反应2小时后,三乙胺中和,减压蒸干溶剂,得到α,β混合的、以α为主的油状物3。
甲基2,3,4,6-四-氧-乙酰基-β-D-葡萄吡喃糖基-(1→6)[2,3,4,6-四-氧-乙酰基-β-D-葡萄吡喃糖基-(1→3)]-2,4-二-氧-乙酰基-β-D-葡萄吡喃糖基-2,3,4-三-氧-乙酰基-β-D-葡萄吡喃糖基-(1→6)-[2,3,4,6-四-氧-乙酰基-β-D-葡萄吡喃糖基-(1→3)]-2,4-二-氧-乙酰基-α-D-葡萄吡喃糖苷(4)
化合物3(5g)溶于少量二氯甲烷(10mL)中,加入1个当量的三氟乙酸,室温下反应14小时。将化合物2(5g)和氮碘代琥珀酰亚胺(3个当量)溶于另一反应器的二氯甲烷(10mL)中,于零度下,将含化合物3的溶液滴加至于内,4小时后用三乙胺中和,减压蒸干溶剂,硅胶柱分离纯化,乙酸乙酯∶石油醚(3∶2)洗脱,得到泡状物4(63%):[α]D 25+26°(c1,CHCl3);部分核磁1H NMR(500MHz,CDCl3):1.935,1.941,1.942,1.958,1.966,1.972,1.980,1.980,1.991,1.991,2.003,2.009,2.009,2.027,2.047,2.056,2.056,2.134,2.148(19s,19x3H,19CH3CO),3.349(s,3H,OCH3),4.295(d,1H,J8.0Hz,H-1),4.488(d,1H,J8.0Hz,H-1),4.511(d,1H,J8.0Hz,H-1),4.576(d,1H,J8.0Hz,H-1),4.612(d,1H,J8.0Hz,H-1),4.780(d,1H,J3.5Hz,H-1I)。
甲基β-D-葡萄吡喃糖基-(1→6)-[β-D-葡萄吡喃糖基-(13)]-β-D-葡萄吡喃糖基-β-D-葡萄吡喃糖基-(1→6)-[β-D-葡萄吡喃糖基-(1→3)]-α-D-葡萄吡喃糖苷(5)
将化合物4(3.7g)溶于甲醇中(150ml),加入0.5N NaOMe(15mL)至pH10,继续反应24小时,树脂中和,蒸干溶剂后得到泡沫状固体物5(95%):13CNMR(CDCl3):55.05,60.46(3C),67.57,67.70,68.37,68.61,69.18,69.33(2C),69.38,70.20,70.47,72.56,72.85(2C),73.22(3C),74.39,74.63,75.30(3C),75.41,75.67,75.73,75.7781.99,84.04,98.99,102.46,102.59(3C),102.71。
甲基2,3,4,6-四-硫酸酯-β-D-葡萄吡喃糖基-(1→6)-[2,3,4,6-四-硫酸酯-β-D-葡萄吡喃糖基-(1→3)]-2,4-二-硫酸酯-β-D-葡萄吡喃糖基-(1→6)-2,3,4-三-硫酸酯-β-D-葡萄吡喃糖基-(1→6)-[2,3,4,6-四-硫酸酯-β-D-葡萄吡喃糖基-(1→3)]-2,4-二-硫酸酯-α-D-葡萄吡喃糖苷(1)
Figure A0315025100062
将化合物5溶于吡啶中,加入三氧化硫-吡啶复合物(六糖的10个当量),55℃下搅拌2天,蒸干溶剂,加入3N NaOH溶液搅拌20分钟,用二氯甲烷洗去吡啶,水相用LH20过柱分离,冷冻干燥得到目标化合物1。13C NMR(CDCl3):14.17,22.76,25.74,29.10,29.16,29.41,31.83,59.53,60.07(3C),60.18(2C),60.85(2C),62.31,62.67(2C),62.70,69.41,71.18,73.40,74.97,75.57,75.80,75.86,76.03,78.36,78.45,78.52,78.70,78.81,78.90,81.30,81.45,81.54,81.61,81.86,99.08,100.77,100.85,100.89,100.96,101.47。

Claims (7)

1.一种如图所示的具有潜在药用价值的化合物。
2.一种制备上述化合物的方法。其特征在于:三糖供体制成1位硫苷的衍生物2,三糖受体制成1位甲基苷,6’位硅烷化的衍生物3。
3.一种制备上述化合物的方法。其特征在于:由2和3在催化剂存在下,制成六糖甲基苷4,4用碱处理得游离寡糖5,5与三氧化硫-吡啶反应得硫酸化的目标六糖苷1。
4.权力要求3中的催化剂为氮碘代琥珀酰亚胺、氮溴代琥珀酰亚胺与三甲基硅基三氟甲磺酸酯或三氟化硼***混合物。溶剂为无水二氯甲烷、乙腈等。反应温度为-42到零度。
5.权力要求1的化合物在医药中的应用。如作为抗艾滋病病毒的药物组分或药物组合物。
6.权力要求1的化合物在医药中的应用。如作为抗凝血的药物组分或药物组合物。
7.权力要求1的化合物在医药中的应用。如作为抗肿瘤的药物组分或药物组合物。
CN 03150251 2003-07-23 2003-07-23 一种活性寡糖衍生物及其制备方法 Pending CN1569902A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104507506A (zh) * 2012-07-13 2015-04-08 优格医疗用品公司 控制释放活性剂的敷料

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104507506A (zh) * 2012-07-13 2015-04-08 优格医疗用品公司 控制释放活性剂的敷料

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