CN112480140A - C5-位取代汉防己甲素衍生物及其制备方法和应用 - Google Patents
C5-位取代汉防己甲素衍生物及其制备方法和应用 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D519/00—Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups C07D453/00 or C07D455/00
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Abstract
Description
技术领域
本发明涉及天然药物及药物化学领域,具体涉及C5-位取代汉防己甲素衍生物的制备方法。
背景技术
汉防已甲素(Tetrandrine简写为Tet)又叫粉防己碱,为防已科植物粉防已干燥根的主要生物碱,属异喹啉化合物,分子式为C38H42N2O6,化学式(6,6’,7,12-四甲氧基-2,2’二甲基小檗胺),分子量为622.73g/mol,其结构如下所示:
防已科植物粉防已干燥根,这种草药的根在中国药典中被广泛引用治疗结核病、痢疾、哮喘、高血糖等疾病,以及对心肌、疟疾、癌症和发烧的负离子性和变时性影响。汉防已甲素是一种具有广泛生物活性的分子,能与Ca2+非竞争性对抗,具有钙通道阻断作用,属慢通道阻滞剂。几十年来,作为我国临床用药,汉防已甲素主要用于治疗矽肺患者,自身免疫性疾病,炎症性肺部疾病,心血管疾病和高血压等疾病。近些年来,越来越多的研究发现,汉防已甲素在癌症治疗中具有药理作用的潜力,例如在人白血病U937,人肝癌HepG2,人肺癌A549以及人结肠癌HCT-116细胞的研究中发现汉防已甲素能抑制肿瘤细胞增殖。因为汉防已甲素是高脂溶性的,具有低分子量的疏水分子,它可能可以穿过血脑屏障,Chen等的研究发现,一定剂量的汉防已甲素(150毫克/千克/天)可通过抑制胶质瘤中VEGF的表达,从而对皮下RT-2胶质瘤的血管生成产生抑制作用[Chen Y,Chen JC and TsengSH.Tetrandrine suppressestumor growth and angiogenesis of gliomas inrats.International journal of cancer Journal.2009;124:2260-2269.]。汉防已甲素还能影响脑内肿瘤,对ECV304人脐带静脉内皮细胞有细胞毒性,并能抑制体内血管生成[Chen Y,Tseng SH.The Potential of Tetrandrine against Gliomas.AnticancerAgents Med Chem.2010;10:534-542.]。汉防已甲素在分子水平的癌症化疗作用也有相关研究报道,主要包括其在不同癌症中对细胞增殖、细胞凋亡、血管生成、转移、自噬和多药耐药等的影响[T.Liu,X.Liu,W.Li,Tetrandrine,a Chinese plant-derived alkaloid,is apotentialcandidate for cancer chemotherapy,Oncotarget 7(2016)40800–40815.]。汉防已甲素可调节多种信号分子,如细胞周期激酶、RAS通路[J.Kaur,J.Debnath,Autophagyat the crossroads of catabolism and anabolism,Nat.Rev.Mol.Cell Biol.16(2015)461–472.]、抑癌基因、自噬相关的蛋白质、β-catenins、caspase以及死亡受体等[T.Chen,B.Ji,Y.Chen,Tetrandrine triggers apoptosis and cell cycle arrest in humanrenal cell carcinoma cells,J.Nat.Med.68(2014)46–52.]。此外亦有报道表明,汉防已甲素在不同的肿瘤中,可通过调节P-Glyco蛋白(P-gp)的表达水平从而表现出对耐药性的逆转[C.Holohan,S.V.Schaeybroeck,D.B.Longley,P.G.Johnston,Cancer drugresistance:an evolving paradigm,Nat.Rev.Cancer 13(2013)714–726.L.Fu,Y.Liang,L.Deng,Y.Ding,L.Chen,Y.Ye,X.Yang,Q.Pan,Characterization of tetrandrine,apotent inhibitor of P-glycoprotein-mediated multidrug resistance,CancerChemother.Pharmacol.53(2004)349–356.]。
汉防已甲素作为一种具有广泛生物活性的药物,其在临床上有着极大的应用前景。虽然目前有研究者在动物体内的抗癌活性模型试验中发现汉防已甲素的药代动力学参数改变不大,但其生物利用度仍是一个限制因素,因此,研发具有良好生物活性和药动学特性的新型汉防已甲素衍生物仍是当今市场所需。
发明内容
本发明的目的之一是提供通式为(I)的新型C5-位取代汉防己甲素衍生物及其制备方法和应用或其药学上可接受的加成物、复合物,盐、分解产物和代谢产物。
C5-位取代汉防己甲素衍生物,为式(I)结构:
其中,
X选自氮、氰基或醛基;
当X为氰基或醛基,n=0;当X为氮时,n=1或2;
X为氮,R独立地选自氢、烷基酰基、取代芳基酰基、取代芳基磺酰基。
进一步,所述的C5-位取代汉防己甲素衍生物为以下结构的化合物:
本发明的目的之二是提供制备本发明氨基磺化通式为(I)的新型C5-位取代汉防己甲素衍生物、制备方法和应用的方法,其按以下工艺路线进行:
通式为(I)的新型C5-位取代汉防己甲素衍生物、制备方法和应用C5-位取代汉防己甲素衍生物、制备方法和应用的合成流程分为以下三个步骤:
一、汉防己甲素用三溴吡啶鎓盐进行溴代,得到5-溴汉防己甲素;
二、5-溴汉防己甲素在L-脯氨酸、碘化亚铜和叠氮化钠的作用下转化为5-氨基汉防己甲素;
三、5-氨基汉防己甲素在碱的作用下进行一步与含X-(R)n基的化合物(即含X-(R)n基的取代物,具体如苄氯、酰氯和磺酰氯)反应转化为目标衍生物,即式(I)结构的C5-位取代汉防己甲素衍生物。
具体地,先由汉防已甲素与三溴吡啶鎓盐在TLC监控下,室温反应4h,生成产物5-溴汉防己甲素;该产物溶于二甲基亚砜再与L-脯氨酸、叠氮化钠、碘化亚铜在130℃温度下反应4h生成产物5-胺基汉防己甲素;将5-胺基汉防己甲素与吡啶、三乙胺和4-三氟甲基苯磺酰氯,35℃搅拌反应6h后获得R基为芳基磺酰基(TET-13)的新型C5-位取代汉防己甲素衍生物。
本发明的目的之三是提供本发明化合物在制备抗肿瘤药物的制药用途。所述肿瘤特别选自白血病、多发性骨髓瘤、淋巴瘤、肝癌、胃癌、乳腺癌、胆管细胞癌、胰腺癌、肺癌、大肠癌、骨肉瘤、黑色素瘤、人宫颈癌、神经胶质瘤、鼻咽癌、喉癌、食管癌、中耳肿瘤、前列腺癌等。
制备反应的原料是汉防已甲素(TET)。该原料是由天然产物提取分离而得到,可以在市场上购买获得。制备反应的有机酸、有机酸酐或有机酰氯等试剂全部可以在市场上购买获得。常规的化学转换可用于实施本发明。本领域的技术人员可以决定用于这些化学转换的适当的化学试剂、溶剂、保护基和反应条件。
与现有技术相比,本发明具有如下优点:
用本发明的5-(4-三氟甲基苯磺酰胺基)-汉防己甲素衍生物作用于不同的肿瘤细胞,采用MTT法检测药物处理后不同肿瘤细胞的活性,结果发现本发明的5-(4-三氟甲基苯磺酰胺基)-汉防己甲素衍生物能有效的诱导多发性骨髓瘤细胞死亡,与汉防己甲素本身比较,本发明的5-(4-三氟甲基苯磺酰胺基)-汉防己甲素衍生物具有明显的抗细胞株活性,其抗骨髓瘤RPMI-8226细胞株活性提高近2倍,具有良好的生物活性。
附图说明
图1为5-(4-三氟甲基苯磺酰胺基)-汉防己甲素的结构图。
图2为TET-13作用于不同肿瘤细胞后用MTT法检测细胞的活力的变化图。
具体实施方式
本实验采用已知的文献方法制备汉防己甲素衍生物,用TLC法对反应过程进行控制,用HPLC法对衍生物进行纯度分析,具体操作如下。
实施例:
5-溴汉防己甲素的制备:汉防己甲素溶解于冰醋酸,加入三溴吡啶鎓盐,室温下反应一定时间,反应液调碱后用二氯甲烷萃,合并有机层,用盐水洗涤,无水硫酸钠干燥,蒸干,得到5-溴汉防己甲素。1H NMR(400MHz,CDC13),δ7.34(dd,J=8.2,2.2Hz,1H),7.14(dd,J=8.1,2.5Hz,1H),6.87(s,2H),6.79(dd,J=8.3,2.5Hz,1H),6.52(s,1H),6.50(s,1H),6.29(dd,J=8.3,2.1Hz,1H),6.01(s,1H),3.93(s,3H),3.79(d,J=10.1Hz,1H),3.74(s,3H),3.55-3.40(m,3H),3.37(s,3H),3.26(dd,J=12.5,5.6Hz,1H),3.22(s,3H),3.02-2.95(m,2H),2.91-2.87(m,1H),2.82-2.67(m,5H),2.64(s,3H),2.49(d,J=8.4Hz,1H),2.29(s,3H);ESI-MS m/z:701.4[M+H]+.
5-氰基汉防己甲素(TET-01)的制备:取适量5-溴汉防己甲素溶解于二乙基甲酰胺溶液中,加入氰化亚铜,让其在140-150℃下保温反应一定时间,用二氯甲烷稀释,加入浓氨水滤除不溶物,分层,有机层用盐水洗涤,无水硫酸钠干燥,得到5-氰基汉防己甲素。1H NMR(400MHz,CDC13),δ7.35(dd,J=8.2,2.2Hz,1H),7.16(dd,J=8.1,2.2Hz,1H),6.89(s,2H),6.80(dd,J=8.3,2.2Hz,1H),6.54(s,1H),6.53(s,1H),6.30(dd,J=8.3,2.1Hz,1H),6.03(s,1H),3.94(s,3H),3.79(d,J=10.1Hz,1H),3.74(s,3H),3.56-3.42(m,3H),3.38(s,3H),3.25(dd,J=12.5,5.6Hz,1H),3.21(s,3H),3.00-2.87(m,3H),2.82-2.65(m,5H),2.64(s,3H),2.47(d,J=8.3Hz,1H),2.24(s,3H);ESI-MS m/z:648.31[M+H]+.
5-胺基汉防己甲素(TET-07)的制备:取适量5-溴汉防己甲素,加入L-脯氨酸,叠氮化钠和二甲基亚砜,用氮气置换,加入碘化亚酮,在130℃下反应一定时间,加入乙酸乙酯稀释,滤除不溶解物,滤液依次用水和盐水洗涤,无水硫酸钠干燥,得5-胺基汉防己甲素。1HNMR(400MHz,CDC13),δ7.32(dd,J=8.2,2.2Hz,1H),7.15(dd,J=8.1,2.3Hz,1H),6.86(s,2H),6.80(dd,J=8.0,2.5Hz,1H),6.55(s,1H),6.53(s,1H),6.29(dd,J=8.3,2.0Hz,1H),6.00(s,1H),3.92(s,3H),3.78(d,J=10.0Hz,1H),3.73(s,3H),3.54-3.40(m,3H),3.35(s,3H),3.24(dd,J=12.4,5.2Hz,1H),3.11(s,3H),3.01-2.65(m,8H),2.61(s,3H),2.45(d,J=8.5Hz,1H),2.35(s,3H);ESI-MS m/z:638.30[M+H]+.
5-(4-三氟甲基苯磺酰胺基)-汉防己甲素(TET-13)的制备:取适量5-胺基汉防己甲素加入吡啶、三乙胺和4-三氟甲基苯磺酰氯,35℃搅拌反应一定时间,无水硫酸钠干燥,蒸干,得5-(4-三氟甲基苯磺酰胺基)-汉防己甲素。1H NMR(400MHz,CDC13),δ8.06(d,J=8.2Hz,2H),7.73(d,J=8.2Hz,2H),7.34(dd,J=8.2,2.2Hz,1H),7.18(dd,J=8.1,2.5Hz,1H),6.89(s,2H),6.80(dd,J=8.3,2.5Hz,1H),6.54(s,1H),6.53(s,1H),6.30(dd,J=8.3,2.1Hz,1H),6.03(s,1H),3.93(s,3H),3.79(d,J=10.2Hz,1H),3.74(s,3H),3.54-3.40(m,3H),3.35(s,3H),3.26(dd,J=12.4,5.2Hz,1H),3.13(s,3H),3.01-2.86(m,3H),2.84-2.64(m,5H),2.59(s,3H),2.47(d,J=8.2Hz,1H),2.31(s,3H);ESI-MS m/z:846.32[M+H]+.
以上反应一般在有碱和缩合试剂存在下进行。这里碱可以为有机碱或无机碱。
用于酰化反应的酰化试剂可以是相应的有机酸、有机酰卤或有机酸酐。用于磺酰化反应的磺酰化试剂可以是相应的有机磺酰卤。
酰化反应一般在溶剂中进行。溶剂的选择取决于原料的极性和溶解性。使用的溶剂包括但不限于有机极性溶剂。例如:二氯甲烷(DCM),四氢呋喃(THF),N,N-二甲基甲酰胺(DMF),二甲亚砜(DMSO)。
应用例:本发明的5-(4-三氟甲基苯磺酰胺基)-汉防己甲素衍生物抗肿瘤细胞的活性测定。
(1)实验材料
白血病细胞株:H9(急性淋巴细胞白血病,ALL),购自中国典型培养物保藏中心;骨髓瘤细胞株:RPMI-8226(多发性骨髓瘤)均受赠于浙江大学肿瘤研究所;肝癌细胞株:HepG2(人肝癌细胞)
试剂:汉防己甲素标准品购自西安昊轩生物有限公司,本发明的主要试剂:本发明的5-(4-三氟甲基苯磺酰胺基)-汉防己甲素(TET-13)。主要仪器:细胞培养箱,酶标仪。
主要仪器:细胞培养箱(型号:Thermo Scientific 3111),酶标仪(型号:Bio-RadiMark)。
(2)实验方法
取细胞培养液离心(1000rpm,5min)得到细胞沉淀,计数RPMI-8226细胞数,以10000/孔的细胞浓度接种到96孔细胞培养板孔内,培养液为含10%胎牛血清的1640细胞培养液,第二天加入不同浓度的5-(4-三氟甲基苯磺酰胺基)-汉防己甲素衍生物,混匀后,置于含5%CO2的细胞培养箱,37℃培养72小时。然后用MTT法测定活细胞浓度,在本实验中对照组(不加化合物处理)细胞活力设为100%,并计算出化合物作用后细胞活力(%)和72小时骨髓瘤细胞半数生长抑制浓度(72小时IC 50值)。
取细胞培养液离心(1000rpm,5min)得到细胞沉淀,计数H9以5500/孔的细胞浓度接种到96孔细胞培养板孔内,培养液为含10%胎牛血清的1640细胞培养液,第二天加入不同浓度的5-(4-三氟甲基苯磺酰胺基)-汉防己甲素(TET-13),混匀后,置于含5%CO 2的细胞培养箱37℃培养72小时。然后用MTT法测定活细胞浓度,在本实验中对照组(不加化合物处理)细胞活力设为100%,并计算出化合物作用后细胞活力(%)和72小时白血病细胞半数生长抑制浓度(72小时IC 50值)。
贴壁细胞提前一天铺板,取细胞培养液离心(1000rpm,5min)得到细胞沉淀,计数HepG2细胞数,以3000/孔的细胞浓度接种到96孔细胞培养板孔内,培养液为含10%胎牛血清的DMEM细胞培养液,第二天加入不同浓度的5-(4-三氟甲基苯磺酰胺基)-汉防己甲素衍生物,混匀后,置于二氧化碳(5%CO 2)细胞培养箱37℃培养72小时。然后用MTT法测定活细胞浓度,在本实验中对照组(不加化合物处理)细胞活力设为100%,并计算出化合物作用后细胞活力(%)和72小时肝癌细胞半数生长抑制浓度(72小时IC 50值)。
(3)实验结果
实验结果见图2及表1。
表1C5-位氨基磺化TET与TET治疗窗比较
IC50(uM) | TET-0 | TET-13 |
RPMI-8226 | 2.678 | 1.891 |
H9 | 1.179 | 3.051 |
HepG2 | 0.9353 | 3.456 |
表1显示本发明的5-(4-三氟甲基苯磺酰胺基)-汉防己甲素衍生物能有效的诱导多发性骨髓瘤细胞死亡,与汉防己甲素本身比较,本发明的5-(4-三氟甲基苯磺酰胺基)-汉防己甲素衍生物具有明显的抗细胞株活性,抗骨髓瘤RPMI-8226细胞株活性提高近2倍。
Claims (5)
3.根据权利要求1所述的C5-位取代汉防己甲素衍生物的制备方法,其特征在于,包括以下步骤:
一、汉防己甲素用三溴吡啶鎓盐进行溴代,得到5-溴汉防己甲素;
二、5-溴汉防己甲素在L-脯氨酸、碘化亚铜和叠氮化钠的作用下转化为5-氨基汉防己甲素;
三、5-氨基汉防己甲素在碱的作用下与含X-(R)n基的化合物反应转化为式(I)结构的C5-位取代汉防己甲素衍生物。
4.根据权利要求1或2所述的C5-位取代汉防己甲素衍生物在制备抗肿瘤药物中的应用。
5.根据权利要求4所述的应用,其特征在于,所述肿瘤为白血病、多发性骨髓瘤、淋巴瘤、肝癌、胃癌、乳腺癌、胆管细胞癌、胰腺癌、肺癌、大肠癌、骨肉瘤、黑色素瘤、人宫颈癌、神经胶质瘤、鼻咽癌、喉癌、食管癌、中耳肿瘤或前列腺癌。
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