CN102731456A - 一种抗肿瘤化合物及其制备方法和应用 - Google Patents
一种抗肿瘤化合物及其制备方法和应用 Download PDFInfo
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- CN102731456A CN102731456A CN2011100818187A CN201110081818A CN102731456A CN 102731456 A CN102731456 A CN 102731456A CN 2011100818187 A CN2011100818187 A CN 2011100818187A CN 201110081818 A CN201110081818 A CN 201110081818A CN 102731456 A CN102731456 A CN 102731456A
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- dioxolane
- pyran
- methoxyphenyl
- ketone
- tumor
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Abstract
Description
技术领域
本发明属于医药领域,涉及抗肿瘤药物,具体涉及用于治疗哺乳动物妇科肿瘤、前列腺肿瘤、消化系统肿瘤和血液系统肿瘤、代谢系统肿瘤的药物。
背景技术
恶性肿瘤严重威胁着人类的生命。据第三次全国居民死因调查结果显示,我国肿瘤引起的死亡率在所有病因中居第二位,占17.9%,且发病率呈逐年上升的趋势。近20年以来,我国肿瘤死亡率上升了29.42%。在中壮年人群中,肿瘤已列居各类死因之首。寻找有效的抗癌药物与方法,彻底攻克癌症,是世界医学界研究的重要课题。
化疗在肿瘤治疗的研究中扮演着举足轻重的作用。现有的多数抗肿瘤药物属于细胞毒类药物,主要是破坏肿瘤细胞DNA结构,可使肿瘤患者生存时间延长。传统的化疗药物包括烷化剂,铂络合物,抗代谢药,影响激素功能抗癌药等。随着临床长期大量使用,它们的弊端也不断显现:
(1)耐药性:顺铂是目前胃癌患者化疗及胃癌体外药敏实验最常用的经典药物之一。其抗肿瘤毒性和有效性得到肯定。但近年来顺铂耐药性的产生降低了顺铂的实际疗效,甚至导致胃癌化疗的失败,因此限制了顺铂的临床应用[参见:蒋丽嫒.胃癌顺铂耐药机制的研究进展.实用肿瘤学杂志.2010,24:194-197.]。5-Fu尿嘧啶同样为临床常用抗代谢的抗癌药,广泛用于胃肠癌。其耐药现象的产生同样影响了它在临床的使用[参见:Rita Humeniuk et al.Decreasedlevels of UMP kinase as a mechanism of fluoropyrimidine resistance.Mol Cancer Ther.2009,8:1037-1044.]。肿瘤耐药具有多种途径,如细胞表面转运蛋白P-gP、MRP等将细胞内的抗肿瘤药物转运出胞外,从而降低了胞内细胞药物的有效浓度而不能杀死肿瘤细胞。DNA修复异常也会导致肿瘤耐药。某些抗肿瘤药如烷化剂、抗代谢药直接针对DNA,造成DNA损伤。损伤的DNA可通过碱基切除修复或核苷酸切除修复途径保护肿瘤细胞免受化疗药物的进攻。此外细胞内解毒系统,凋亡耐受与肿瘤微环境均能影响抗肿瘤药的效果[参见:孙杰.肿瘤耐药及其逆转策略.实用肿瘤杂志.2010,25:490-493.]。
(2)不良反应:化疗作为恶性肿瘤的主要治疗手段,杀伤力强,见效较快,但其不良反应也较明显,尤其是细胞毒性药物选择性不强,在抑制或杀伤肿瘤细胞的同时,也对人体正常细胞、组织造成不同程度的损害。常见的如骨髓抑制、免疫抑制、心肌损害、外周神经病变、口腔溃疡等[参见:潘向荣.肿瘤化疗不良反应发的中医药治疗近况.医学综述.2010,16:2358-2360.],严重者可造成组织器官功能的衰竭甚至可因毒性不可逆而导致死亡。这些不良反应不仅直接影响患者的生存质量,还会妨碍化疗方案的顺利实施。其中骨髓抑制不良反应最为常见。临床表现为白细胞减少和血小板减少,严重者还可见贫血。蒽环类、紫杉醇类、长春碱类、喜树碱类、铂类药物,以及丝裂霉素、吉西他滨、环磷酰胺、异环磷酰胺、甲氨蝶呤、氮芥等常用抗肿瘤药物都表现出明显的骨髓抑制作用[参见:张艳华,刘红.抗肿瘤药物的严重不良反应与防治.药物警戒.2010,7:40-43.]。
寻找副作用小的抗肿瘤药物是当今肿瘤药物研究的一项重要课题。
发明内容
本发明的任务是提供一种抗肿瘤化合物,同时提供该化合物的制备方法。
本发明提供的这种抗肿瘤化合物,是具有以下式I结构的化合物2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮。
本发明提供的抗肿瘤化合物的制备方法包括以下步骤:
(1)取2-(2-溴乙基)-1,3-二氧环戊烷和亚硝酸钠,经硝基化反应并纯化后得到2-(2-硝基乙基)-1,3-二氧环戊烷;
(2)取2-(2-硝基乙基)-1,3-二氧环戊烷和4-乙炔基苯甲醚,在异氰酸苯酯存在的条件下进行1,3-偶极环加成反应并纯化后得到3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑;
(3)取3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑,经六羰基钼的开环反应并纯化后得到(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮;
(4)取(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮,在酸性条件下进行环化反应得到2-(4-甲氧基苯基)-吡喃-4-酮;
(5)取2-(4-甲氧基苯基)-吡喃-4-酮,在BBr3的作用下进行脱甲基反应得到2-(4-羟基苯基)-吡喃-4-酮;
(6)取2-(4-羟基苯基)-吡喃-4-酮在氧化剂和催化剂的作用下进行氧化反应得到2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮。
上述步骤(1)中所述的取2-(2-溴乙基)-1,3-二氧环戊烷和亚硝酸钠,经硝基化反应并纯化后得到2-(2-硝基乙基)-1,3-二氧环戊烷的具体方法是:取2-(2-溴乙基)-1,3-二氧环戊烷,亚硝酸钠和间苯三酚溶于有机溶剂中,混合均匀,室温搅拌,回收溶剂,用石油醚/丙酮正相硅胶进行柱层析纯化即得2-(2-硝基乙基)-1,3-二氧环戊烷,所述的有机溶剂为DMSO、DMF、苯、甲苯或乙醚。
上述步骤(2)中所述的取2-(2-硝基乙基)-1,3-二氧环戊烷和4-乙炔基苯甲醚,在异氰酸苯酯存在的条件下进行1,3-偶极环加成反应并纯化后得到3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑的具体方法是:取2-(2-硝基乙基)-1,3-二氧环戊烷和4-乙炔基苯甲醚溶于有机溶剂中,混合均匀,随后加入三乙胺和异氰酸苯酯,该混合物加热回流12-18小时后冷却至室温,加水,搅拌,硅藻土过滤,然后用乙酸乙酯萃取,合并乙酸乙酯萃取液,回收溶剂,产物用环己烷/乙酸乙酯正相硅胶柱层析纯化即得3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑,所述的有机溶剂为苯、甲苯、DMSO、DMF或乙醚。
上述步骤(3)中所述的取3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑,经六羰基钼的开环反应并纯化后得到(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮的具体方法是:取3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑溶于乙腈/水混合溶剂中,然后加入六羰基钼,混合物加热回流3-5小时,回收溶剂,环己烷/乙酸乙酯正相硅胶柱层析纯化得(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮。
上述步骤(4)中所述的取(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮,在酸性条件下进行环化反应得到2-(4-甲氧基苯基)-吡喃-4-酮的具体方法是:取(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮溶解于甲酸/乙酸的混合有机溶剂中,加热回流12-18小时后冷却至室温,加水后用乙酸乙酯萃取,氢氧化钠溶液洗至中性,回收溶剂后用环己烷/乙酸乙酯正相硅胶柱层析纯化,得2-(4-甲氧基苯基)-吡喃-4-酮。
上述步骤(5)中所述的取2-(4-甲氧基苯基)-吡喃-4-酮,在BBr3的作用下进行脱甲基反应得到2-(4-羟基苯基)-吡喃-4酮的具体方法是:在-75℃或0℃条件下,取2-(4-甲氧基苯基)-吡喃-4-酮溶于二氯甲烷中,加入BBr3,混合物室温下搅拌6-8小时,加入冰水,乙酸乙酯萃取,合并有机层,即得2-(4-羟基苯基)-吡喃-4酮。
上述步骤(6)中所述的取2-(4-羟基苯基)-吡喃-4酮在氧化剂和催化剂的作用下进行氧化反应得到2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮具体方法是:取2-(4-羟基苯基)-吡喃-4酮溶于乙腈与水的混合溶剂中,加入氧化剂和催化剂,室温搅拌3-6小时,产物用二氯甲烷/甲醇正相硅胶柱纯化,得2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮,所述的氧化剂为[双(三氟乙酰氧基)碘]苯(PIFA)或碘苯二乙酯(PIA),所述的催化剂为2,2,6,6-四甲基-1-哌啶酮(TEMPO),所述的乙腈与水的混合溶剂是将乙腈与水按体积比为9∶1的比例混合而成。
本发明采用2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮对妇科肿瘤细胞、前列腺肿瘤细胞、消化系统肿瘤细胞、血液系统肿瘤细胞、血液系统正常细胞、代谢系统正常细胞进行体外试验(in vitro),证实该化合物具有选择性抑制癌细胞活性。同时对荷瘤小鼠进行抗肿瘤及造血、免疫功能体内实验(in vivo),证实该化合物能有效抑制荷瘤小鼠肿瘤生长且不影响造血和免疫功能。
[实验资料]
一、合成本发明化合物2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮:
(1)2-(2-溴乙基)-1,3-二氧环戊烷和亚硝酸钠经硝基化反应并纯化后得到黄色液体物质,参考相关文献判断为2-(2-硝基乙基)-1,3-二氧环戊烷[参见:Robyn L.Crumbie et al.α-Nitroketones and esters from acylimidazoles.J.Org.Chem.1982,47:4040-4045.],具体方法是:2-(2-溴乙基)-1,3-二氧环戊烷、亚硝酸钠和间苯三酚溶于有机溶剂中,混合均匀,室温搅拌,回收溶剂,用石油醚/丙酮正相硅胶进行柱层析纯化即得2-(2-硝基乙基)-1,3-二氧环戊烷。有机溶剂可为DMSO、DMF、苯、甲苯、乙醚。2-(2-硝基乙基)-1,3-二氧环戊烷的结构见图4;
(2)2-(2-硝基乙基)-1,3-二氧环戊烷和4-乙炔基苯甲醚在异氰酸苯酯存在的条件下进行1,3-偶极环加成反应并纯化后得黄色液体物质,参考相关文献判断为3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑[参见:Chun-Sing Li,Edith Lacasse.Synthesis ofpyran-4-ones fromisoxazoles.Tetrahedron Letters.2002,43:3565-3568.],具体方法是:取2-(2-硝基乙基)-1,3-二氧环戊烷和4-乙炔基苯甲醚溶于有机溶剂中,混合均匀,随后加入三乙胺和异氰酸苯酯,该混合物加热回流12-18小时后冷却至室温,加水,搅拌,硅藻土过滤,然后用乙酸乙酯萃取,合并乙酸乙酯萃取液,回收溶剂,产物用环己烷/乙酸乙酯正相硅胶柱层析纯化即得3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑。有机溶剂可为苯、甲苯、DMSO、DMF、乙醚。3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑的结构见图4。
(3)3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑经六羰基钼的开环反应并纯化后得到黄色固体物质,参考相关文献判断为(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮[参见:Chun-Sing Li,Edith Lacasse.Synthesis of pyran-4-ones from isoxazoles.Tetrahedron Letters.2002,43:3565-3568.],具体方法是:取3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑溶于乙腈/水混合溶剂中,然后加入六羰基钼,混合物加热回流3-5小时,回收溶剂,环己烷/乙酸乙酯正相硅胶柱层析纯化得(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮。(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮的结构见图4。
(4)(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮在酸性条件进行环化反应得黄色固体物质,参考相关文献判断为2-(4-甲氧基苯基)-吡喃-4-酮[参见:Chun-Sing Li,Edith Lacasse.Synthesis of pyran-4-ones from isoxazoles.Tetrahedron Letters.2002,43:3565-3568.],具体方法是:取(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮溶解于甲酸/乙酸的混合有机溶剂中,加热回流12-18小时后冷却至室温,加水后用乙酸乙酯萃取,氢氧化钠溶液洗至中性,回收溶剂后用环己烷/乙酸乙酯正相硅胶柱层析纯化,得2-(4-甲氧基苯基)-吡喃-4-酮。2-(4-甲氧基苯基)-吡喃-4-酮的结构见图4。
(5)2-(4-甲氧基苯基)-吡喃-4-酮在BBr3的作用下进行脱甲基反应得到黄色固体物质,参考相关文献判断为2-(4-羟基苯基)-吡喃-4酮[参见:宋艳玲,等.3,5-二羟基联苄的合成方法改进.中国药物化学杂志.2008,18:129-130,134;卓广澜,等.天然产物(E)-白藜芦醇的全合成.中国药物化学杂志.2002,12:152-154],具体方法是:在-75℃或0℃条件下,取2-(4-甲氧基苯基)-吡喃-4-酮溶于二氯甲烷中,加入BBr3,混合物室温下搅拌6-8小时,加入冰水,乙酸乙酯萃取,合并有机层,即得2-(4-羟基苯基)-吡喃-4-酮。2-(4-羟基苯基)-吡喃-4-酮的结构见图4。
(6)2-(4-羟基苯基)-吡喃-4-酮在氧化剂和催化剂的作用下进行氧化反应得黄色固体物质,氧化剂为[双(三氟乙酰氧基)碘]苯(PIFA)或碘苯二乙酯(PIA),催化剂为2,2,6,6-四甲基-1-哌啶酮(TEMPO)。具体方法是:取)2-(4-羟基苯基)-吡喃-4-酮溶于乙腈/水(9∶1)混合溶剂中,加入氧化剂和催化剂,室温搅拌3-6小时,产物用二氯甲烷/甲醇正相硅胶柱纯化即得黄色固体物质。氧化剂为[双(三氟乙酰氧基)碘]苯(PIFA)或碘苯二乙酯(PIA),催化剂为2,2,6,6-四甲基-1-哌啶酮(TEMPO)。
对上述步骤(6)所得到的黄色固体物质进行测试,该黄色固体物质的MS,UV,13C-NMR,1H-NMR数据如下:
黄色固体:UV:252.5nm;ESI-MS(m/z):203[M-1]-;1H-NMR(400MHz,in DMSO):δ8.10(1H,d,J=6.0Hz,H-6),δ6.96(2H,d,J=10.0Hz,H-2’,6’),δ6.30(2H,d,J=10.0Hz,H-3’,5’),δ6.54(1H,d,J=2.4Hz,H-3),δ6.29(1H,dd,J=6.0,2.4Hz,H-5);13C NMR(100MHz,in DMSO):δ185.3(C-4’),δ178.2(C-4),δ167.1(C-2),δ156.9(C-6),δ148.4(C-2’,6’),δ129.1(C-3’,5’),δ116.9(C-3),δ113.5(C-5),δ69.0(C-1’)(见图1,2,3),参考相关文献判断为2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮[参见:An-Shen Lin et al.First total synthesis ofprotoapigenone and its analogues as potent cytotoxic agents.J.Med.Chem.2007,50:3921-2927.],2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮的结构如式1所示。
二、用本发明合成的2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮进行抗肿瘤药理学实验。
供本发明提供的化合物2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮进行体外抗肿瘤实验的肿瘤细胞包括人源性妇科肿瘤细胞、前列腺肿瘤细胞、消化系统肿瘤细胞及血液系统肿瘤细胞。妇科肿瘤细胞包括乳腺癌细胞株MDA-MB-231、MCF-7和卵巢癌细胞株SKOV3;前列腺肿瘤细胞株为PC-3;消化系统肿瘤细胞包括肝癌细胞株HepG2、胰腺癌细胞株PANC-1;血液系统肿瘤包括骨髓瘤细胞株RPMI8226、骨髓瘤细胞株U266。合成的2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物能抑制上述肿瘤细胞增殖,尤其对妇科系统肿瘤,前列腺肿瘤及消化系统肿瘤更加敏感,抑制效果优于原芹菜素。
供本发明提供的化合物2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮进行细胞毒实验的正常细胞为血液系统正常细胞PBMC和代谢系统正常细胞人胚胎肾细胞HEK 293。合成的2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物对正常血液系统抑制作用较原芹菜素弱,表明其对正常血液系统和代谢系统影响较小。
供本发明提供的化合物2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮进行体内抗肿瘤实验的哺乳动物为H22荷瘤小鼠。合成的2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物对荷瘤小鼠的肿瘤生长有明显的抑制作用,且抑制效果优于原芹菜素。
供本发明提供的化合物2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮进行体内血液系统评价的哺乳动物为H22荷瘤小鼠。合成的2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物对荷瘤小鼠外周血白细胞数,外周血粒细胞数淋巴细胞数比值,骨髓有核细胞数、骨髓细胞粒红比均无显著影响,而原芹菜素对上述指标有显著影响,表明合成的2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物不影响哺乳动物的造血功能,原芹菜素抑制哺乳动物的造血功能。
供本发明提供的化合物2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮进行体内免疫系统评价的哺乳动物为H22荷瘤小鼠。合成的2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物对荷瘤小鼠胸腺指数和脾指数均无显著影响,原芹菜素对荷瘤小鼠的胸腺指数有显著影响,表明合成的2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物不影响哺乳动物的免疫功能,原芹菜素抑制哺乳动物的免疫功能。
体外抗肿瘤实验
(一)实验材料
原芹菜素由本实验室前期从普通针毛蕨地下部分分离得到,提取分离与结构鉴定方法是:自然干燥的药材根茎4kg(采自江西庐山)适当粉碎,用乙醇渗漉提取,60℃减压回收溶剂得浸膏,所得浸膏加适量水悬浮,依次用石油醚、乙醚、乙酸乙酯、正丁醇进行萃取分得4个部位。乙酸乙酯部位经硅胶柱层析,三氯甲烷-甲醇梯度洗脱得到F1-F55个部分,其中F1经硅胶柱层析,三氯甲烷-甲醇洗脱,再经过Sephadex LH-20纯化得到黄色粉末状化合物,ESI-MS(m/z):286[M]+,1H-NMR(400MHz,in DMSO):δ7.01(2H,d,J=9.6Hz,H-2’,6’),δ6.35(2H,d,J=9.6Hz,H-3’,5’),δ6.50(1H,s,H-3),δ6.19(1H,s,H-8);13C NMR(100MHz,inDMSO):δ185.5(C-4’),δ182.4(C-4),δ168.0(C-2),δ165.2(C-7),δ162.1(C-5),δ158.0(C-9),δ148.4(C-2’,6’),δ129.4(C-3’,5’),δ107.1(C-3),δ104.5(C-10),δ99.8(C-6),δ94.5(C-8),δ69.5(C-1’)。
上述实验数据与文献报道的原芹菜素数据一致,故判断为原芹菜素[参见:Lin AS,et al.Newcytotoxic flavonoids from Thelypteris torresiana.Planta Med.2005,71:867-870];
2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮按本发明方法合成及鉴定。
不同浓度的这两种供试化合物母液溶解于DMSO中。实验时,以1000倍稀释加入培养的细胞。
本发明中使用的妇科肿瘤细胞株如下所示:人源性乳腺癌细胞株(MDA-MB-231和MCF-7)、人源性卵巢癌细胞株(SKOV3)购自中国典型菌株保存中心(China Center for TypeCulture Collection,CCTCC),并且培养于添加了10%胎牛血清的DMEM高糖培养基中。
本发明中使用的人源性前列腺癌细胞(PC-3)购自中国典型菌株保存中心,培养于添加了10%胎牛血清的DMEM高糖培养基中。
本发明中使用的消化系统肿瘤细胞株如下所示:人源性肝癌细胞株(HepG2)、人源性胰腺癌细胞株(PANC-1)购自中国典型菌株保存中心,培养于添加了10%胎牛血清的DMEM高糖培养基中。
本发明中使用的血液系统肿瘤细胞株如下所示:人源性多发骨髓瘤细胞(RPMI8226、U266)购自中国典型菌株保存中心,培养于添加了10%胎牛血清的1640培养基中。
本发明中使用的血液系统正常细胞为人外周血单个核细胞(PBMC)由华中科技大学基础医学院免疫实验室提供,并培养于添加了10%胎牛血清的1640培养基中。
本发明中使用的代谢系统正常细胞为人胚胎肾细胞株(HEK293)购自中国典型菌株保存中心,并培养于添加了10%胎牛血清的1640培养基中。
(二)实验方法
体外抗肿瘤实验采用四氮唑盐还原法(MTT法):在96孔板内接种5×104/ml细胞,培养18个小时后以不同浓度(0.1,0.5,1.0,5.0,10.0,50.0,100.0μM)的原芹菜素及2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物作用24小时。以MTT细胞增殖检测法测定供试化合物对肿瘤细胞株的抑制作用。用酶标仪检测,检测波长570nm。无药物作用的细胞组认为存活率100%。存活率=(加药组OD值/对照组OD值)×100%。每组实验重复4次。
(三)实验结果
请参见表1,为原芹菜素及2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物对不同肿瘤细胞株的抑制作用。在表1中,2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物对乳腺癌细胞,卵巢癌细胞,前列腺癌细胞、肝癌细胞及胰腺癌细胞的抑制作用优于原芹菜素,特别是对乳腺癌细胞(MDA-MB-231、MCF-7)及卵巢癌细胞(SKOV3)具有较强的抑制作用,显示其在妇科肿瘤治疗中的潜力。同时其对人外周血单个核细胞(PBMC)和人胚胎肾细胞(HEK 293)抑制作用较弱,提示其不会造成强烈的血液系统和代谢系统抑制的不良反应。相较而言,原芹菜素对多发性骨髓瘤(RPMI8226、U266)和人胚胎肾细胞(HEK 293)的抑制作用要优于2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物,但其对PBMC细胞的抑制作用同样明显,可能会造成血液系统和代谢系统抑制等不良反应。
表1 原芹菜素及2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物对不同细胞株的抑制作用
二、动物在体实验
(一)实验材料
原芹菜素由本实验室前期从普通针毛蕨地下部分分离得到,2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮由本实验室合成。阳性对照药物环磷酰胺(CTX)购于华中科技大学同济医院。
KM小鼠,雌性,17-19g,由华中科技大学动物实验中心提供。H22荷瘤小鼠种鼠由华中科技大学药学院药理实验室提供。
(二)实验方法
1、供试化合物对H22小鼠体内抗肿瘤作用
H22荷瘤小鼠造模及分组给药:无菌条件下抽取传代第7天的H22肝癌小鼠的腹水,按1∶4比例用生理盐水稀释,反复冲打,充分混匀,在显微镜下计数,用生理盐水调整细胞浓度为1×107/mL,取0.2mL于每鼠右侧腋窝下碘酊消毒后皮下接种。实验小鼠接种肿瘤成功后随机分为5组,每组6只,即正常组(NS,20mL/kg,ig),荷瘤对照组(NS,20mL/kg,ig)、CTX组(10mg/kg,ip),2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物组(10mg/kg,ig)、原芹菜素组(10mg/kg,ig)。于第二天开始给药,每天给药一次,给药体积ig是20mL/kg,ip是10mL/kg,连续给药7天。末次给药后次日,称体重后处死小鼠,剥取瘤块称重,计算抑瘤率,抑瘤率=(荷瘤对照组平均瘤重-用药组平均瘤重)/荷瘤对照组平均瘤重×100%。
2、供试化合物对H22小鼠造血功能的影响
分组及给药方式同1,末次给药后次日,小鼠摘眼球采血,取血20μL加入到400μL2%冰醋酸溶液中摇匀,计数外周血白细胞总数。称重后处死小鼠,剥离左侧股骨,用2%冰醋酸溶液5mL冲出骨髓内细胞,常规计数股骨中骨髓有核细胞。血液和骨髓分别制作血液涂片和骨髓涂片,加瑞氏染料染色,计数外周血粒细胞、淋巴细胞和骨髓粒细胞系、红细胞系,分别计算外周血粒细胞数淋巴细胞数比值和骨髓粒红比。
3、供试化合物对H22小鼠免疫功能的影响
造模与给药方法同1,处死小鼠后称定胸腺、脾脏质量,计算胸腺指数和脾指数。
(三)实验结果
请参见表2,为原芹菜素及2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物对H22荷瘤小鼠肿瘤生长的影响。
由表2可以看出10mg/kg的2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物和阳性药物CTX对H22小鼠的肿瘤抑制作用最明显,分别为34.12%和41.47%。与模型组比较有极显著性差异,而原芹菜素在相同剂量下抑制作用不太明显,与模型组比较无显著性差异。但是CTX对小鼠的体重影响较大,使小鼠的体重降低,与正常组比较有显著性差异,提示其对小鼠有一定的毒性作用。
参见图5、图6、图7及图8,为肿瘤组织HE染色,光镜下观察可见模型组和原芹菜素组肿瘤细胞排列不规则,被间质成分分割成团分布,染色质较深,核分裂较多。CTX组和2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮组肿瘤细胞排列规则,细胞核浆比降低,染色较浅,异性核数目降低。并且CTX组和2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮这两组的肿瘤组织切片中可见大量坏死肿瘤细胞和淋巴细胞侵润现象。
与模型组比较1):p<0.01
与正常组比较*:p<0.05
参见表3,为原芹菜素及2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物对H22荷瘤小鼠血液系统的影响。由表3可以看出CTX组和原芹菜素组对小鼠血液系统均有不同程度的影响。CTX组显著降低H22小鼠外周血白细胞数目,极显著降低外周血白细胞中粒细胞与淋巴细胞的比值,骨髓有核细胞数和骨髓粒红比。而原芹菜素组显著降低外周血白细胞中粒细胞与淋巴细胞的比值和骨髓细胞粒红比,极显著降低骨髓有核细胞数,提示这两种化合物抑制小鼠造血系统,特别是抑制粒细胞的生长。而2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物对小鼠造血功能的各个指标影响较小,与正常组比较无显著性差异。
表3 原芹菜素及2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮对H22荷瘤小鼠外周血WBC,外周血粒细胞淋巴细胞比值,骨髓有核细胞数,骨髓细胞粒红比的影响(n=6,)
与正常组比较1)p<0.05;2)p<0.01
参见表4,为原芹菜素及2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物对H22荷瘤小鼠胸腺指数和脾指数的影响。由表4可以看出2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮对H22小鼠胸腺和脾脏的抑制作用最小,与正常组相比无显著性差异,而原芹菜素和CTX对H22小鼠胸腺和脾脏均有一定的抑制作用。
与正常组比较1):p<0.05;2):p<0.01
综上所述,本发明将2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物作用于乳腺癌细胞、卵巢癌细胞,前列腺癌细胞、肝癌细胞,胰腺癌细胞,骨髓瘤细胞,该化合物可有效的抑制细胞增殖。其中对乳腺癌细胞、卵巢癌细胞,前列腺癌细胞、肝癌细胞,胰腺癌细胞的抑制效果要优于原芹菜素,而对血液系统正常细胞和代谢系统正常细胞的毒性低于原芹菜素。通过动物实验证实2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮化合物在体内同样具有较好的抑制肿瘤生长作用,且与阳性药物CTX和原芹菜素相比,具有不影响动物的造血系统功能和免疫系统功能的优点。
附图说明
图1,本发明2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮的1H-NMR图谱;
图2,本发明2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮的1H-NMR局部放大图谱;
图3,本发明2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮的13C-NMR图谱;
图4:合成2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮的反应流程图;
图5:模型组肿瘤组织切片(HE染色×400);
图6:CTX组肿瘤组织切片(HE染色×400);
图7:原芹菜素组肿瘤组织切片(HE染色×400);
图8:2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮组肿瘤组织切片(HE染色×400)。
具体实施方式
本发明可由以下实验说明而得到充分了解,可为本领域技术人员提供参考,但仅为示例,不是对本发明范围的限制。
实施例1
2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮的制备
(1)2-(2-溴乙基)-1,3-二氧环戊烷和亚硝酸钠经硝基化反应并纯化后得到黄色液体物质,其具体操作为:将1当量的2-(2-溴乙基)-1,3-二氧环戊烷、1.3当量的亚硝酸钠、0.5当量间苯三酚溶于DMSO中,混合均匀,室温反应18小时。将反应混合液用水分散,加等体积二氯甲烷萃取2次,取二氯甲烷层,70℃回收溶剂。产物以石油醚/丙酮体积比为10∶1的条件做薄层条件碘缸中显色,Rf值为0.3。用石油醚/丙酮体积比为10∶1的条件做正相硅胶进行柱层析纯化即得黄色液体产物,参考相关文献判断该产物为2-(2-硝基乙基)-1,3-二氧环戊烷[参见:Robyn L.Crumbie et al.α-Nitro ketones and esters from acylimidazoles.J.Org.Chem.1982,47:4040-4045.]
(2)2-(2-硝基乙基)-1,3-二氧环戊烷和4-乙炔基苯甲醚在异氰酸苯酯存在的条件下进行1,3-偶极环加成反应并纯化后得黄色液体物质,其具体操作为:将1当量2-(2-硝基乙基)-1,3-二氧环戊烷和3当量4-乙炔基苯甲醚溶于苯中,混合均匀,随后加入两滴三乙胺和4当量异氰酸苯酯。该混合物90℃加热回流18小时,冷却至室温后加水,室温搅拌30分钟。该混合物用硅藻土过滤后用等体积乙酸乙酯萃取两次,合并乙酸乙酯萃取液,用饱和食盐水洗2次,硫酸镁干燥,回收溶剂。产物以环己烷/乙酸乙酯体积比为7∶3的条件做薄层条件碘缸中显色,Rf值为0.4。产物用环己烷/乙酸乙酯体积比为3∶1的条件做正相硅胶柱层析纯化即得黄色液体产物,参考相关文献判断该产物为3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑[参见:Chun-Sing Li,Edith Lacasse.Synthesis of pyran-4-ones from isoxazoles.TetrahedronLetters.2002,43:3565-3568.]。
(3)3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑经六羰基钼的开环反应并纯化后得到黄色固体物质,其具体操作为:将1当量3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑溶于乙腈/水混合溶剂中加入0.5当量六羰基钼,混合物90℃加热回流3小时。回收溶剂,产物以环己烷/乙酸乙酯体积比为2∶1的条件做薄层条件碘缸中显色,Rf值为0.25左右。产物用环己烷/乙酸乙酯体积比为2∶1的条件做正相硅胶柱层析纯化得黄色固体产物,参考相关文献判断该产物为(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮[参见:Chun-Sing Li,Edith Lacasse.Synthesis of pyran-4-ones from isoxazoles.TetrahedronLetters.2002,43:3565-3568.]。
(4)(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮在酸性条件进行环化反应得黄色固体物质,其具体操作为:将(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮溶解于1体积乙酸中,再用4体积80%甲酸稀释,反应体系60℃加热12小时后冷却至室温,加水后用乙酸乙酯萃取3次,氢氧化钠溶液洗至中性,再用饱和食盐水洗2次,硫酸镁干燥。回收溶剂后产物以环己烷/乙酸乙酯体积比为2∶1的条件做薄层条件碘缸中显色,Rf值为0.15。用环己烷/乙酸乙酯体积比为2∶1的条件做正相硅胶柱层析纯化,得黄色固体产物,参考相关文献判断该产物为2-(4-甲氧基苯基)-吡喃-4-酮[参见:Chun-Sing Li,Edith Lacasse.Synthesis of pyran-4-ones from isoxazoles.Tetrahedron Letters.2002,43:3565-3568.]。
(5)2-(4-甲氧基苯基)-吡喃-4-酮在BBr3的作用下进行脱甲基反应得到黄色固体物质,其具体操作为:在-75℃或0℃条件下将1当量2-(4-甲氧基苯基)-吡喃-4-酮溶于二氯甲烷中,缓缓加入2当量1mol/L BBr3的二氯甲烷溶液。混合物室温下搅拌6小时。反应结束后体系加入冰水,乙酸乙酯萃取两次,合并有机层,即得黄色固体产物,参考相关文献判断该产物为2-(4-羟基苯基)-吡喃-4酮[参见:宋艳玲,等.3,5-二羟基联苄的合成方法改进.中国药物化学杂志.2008,18:129-130,134;卓广澜,等.天然产物(E)-白藜芦醇的全合成.中国药物化学杂志.2002,12:152-154]。
(6)2-(4-羟基苯基)-吡喃-4酮在氧化剂和催化剂的作用下进行氧化反应得黄色固体物质,其具体操作为:将1当量2-(4-羟基苯基)-吡喃-4酮溶于乙腈/水体积比为9∶1的混合溶剂中,加入2当量氧化剂和0.5当量催化剂。室温搅拌5小时。回收溶剂后产物以二氯甲烷/甲醇体积比为30∶1的条件做薄层条件于紫外254nm观察,Rf值为0.2。产物用二氯甲烷/甲醇体积比为30∶1的条件做正相硅胶柱纯化,得黄色固体产物。所述的氧化剂为[双(三乙酰氧基)碘]苯(PIFA)或碘苯二乙酯(PIA),所述的催化剂为2,2,6,6-四甲基-1-哌啶酮(TEMPO)。该产物为黄色固体,UV252.5nm;ESI-MS(m/z):203[M-1]-;1H-NMR(400MHz,in DMSO):δ8.10(1H,d,J=6.0Hz,H-6),δ6.96(2H,d,J=10.0Hz,H-2’,6’),δ6.30(2H,d,J=10.0Hz,H-3’,5’),δ6.54(1H,d,J=2.4Hz,H-3),δ6.29(1H,dd,J=6.0,2.4Hz,H-5);13C NMR(100MHz,in DMSO):δ185.3(C-4’),δ178.2(C-4),δ167.1(C-2),δ156.9(C-6),δ148.4(C-2’,6’),δ129.1(C-3’,5’),δ116.9(C-3),δ113.5(C-5),δ69.0(C-1’)(见图1,2,3),参考相关文献判断该产物为2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮[参见:An-Shen Lin et al.First total synthesis of protoapigenoneand its analogues as potent cytotoxic agents.J.Med.Chem.2007,50:3921-2927.]
合成反应流程图见图4。
本发明可有本领域技术人员做出各种修饰,但不脱离本发明的保护范围。
Claims (10)
2.权利要求1所述的化合物在制备抗肿瘤药物中的应用。
3.权利要求1所述的化合物在制备用于治疗妇科系统肿瘤、前列腺肿瘤、消化系统肿瘤、代谢系统肿瘤或/和血液系统肿瘤药物中的应用。
4.权利要求1所述的化合物的制备方法,包括以下步骤:
(1)取2-(2-溴乙基)-1,3-二氧环戊烷和亚硝酸钠,经硝基化反应并纯化后得到2-(2-硝基乙基)-1,3-二氧环戊烷;
(2)取2-(2-硝基乙基)-1,3-二氧环戊烷和4-乙炔基苯甲醚,在异氰酸苯酯存在的条件下进行1,3-偶极环加成反应并纯化后得到3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑;
(3)取3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑,经六羰基钼的开环反应并纯化后得到(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮;
(4)取(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮,在酸性条件进行环化反应得到2-(4-甲氧基苯基)-吡喃-4-酮;
(5)取2-(4-甲氧基苯基)-吡喃-4-酮,在BBr3的作用下进行脱甲基反应得到2-(4-羟基苯基)-吡喃-4-酮;
(6)取2-(4-羟基苯基)-吡喃-4-酮在氧化剂和催化剂的作用下进行氧化反应得到2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮。所述氧化剂为[双(三氟乙酰氧基)碘]苯(PIFA)或碘苯二乙酯(PIA),所述的催化剂为2,2,6,6-四甲基-1-哌啶酮(TEMPO)。
5.根据权利要求4所述制备方法,其特征在于,步骤(1)所述的取2-(2-溴乙基)-1,3-二氧环戊烷、亚硝酸钠和间苯三酚,经硝基化反应并纯化后得到2-(2-硝基乙基)-1,3-二氧环戊烷的具体方法是:取2-(2-溴乙基)-1,3-二氧环戊烷和亚硝酸钠溶于有机溶剂中,混合均匀,室温搅拌,回收溶剂,用石油醚/丙酮正相硅胶进行柱层析纯化即得2-(2-硝基乙基)-1,3-二氧环戊烷,所述的有机溶剂为DMSO、DMF、苯、甲苯或乙醚。
6.根据权利要求4所述的制备方法,其特征在于,步骤(2)所述的取2-(2-硝基乙基)-1,3-二氧环戊烷和4-乙炔基苯甲醚,在异氰酸苯酯存在的条件下进行1,3-偶极环加成反应并纯化后得到3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑的具体方法是:取2-(2-硝基乙基)-1,3-二氧环戊烷和4-乙炔基苯甲醚溶于有机溶剂中,混合均匀,随后加入三乙胺和异氰酸苯酯,该混合物加热回流12-18小时后冷却至室温后加水,搅拌,硅藻土过滤,然后用乙酸乙酯萃取,合并乙酸乙酯萃取液,回收溶剂,产物用环己烷/乙酸乙酯正相硅胶柱层析纯化即得3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑,所述的有机溶剂为苯、甲苯、DMSO、DMF或乙醚。
7.根据权利要求4所述的制备方法,其特征在于,步骤(3)所述的取3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑,经六羰基钼的开环反应并纯化后得到(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮的具体方法是:取3-(1,3-二氧环戊烷-2-亚甲基)-5-(4-甲氧基苯基)-异恶唑溶于乙腈/水混合溶剂中,然后加入六羰基钼,混合物加热回流3-5小时,回收溶剂,环己烷/乙酸乙酯正相硅胶柱层析纯化得(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮。
8.根据权利要求4所述的制备方法,其特征在于,步骤(4)所述的取(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮,在酸性条件进行环化反应得到2-(4-甲氧基苯基)-吡喃-4-酮的具体方法是:取(2Z)-3-氨基-4-(1,3-二氧环戊烷-2-)-1-(4-甲氧基苯基)-2-丁烯-1-酮溶解于甲酸/乙酸的混合有机溶剂中,加热回流12-18小时后冷却至室温,加水后用乙酸乙酯萃取,氢氧化钠溶液洗至中性,回收溶剂后用环己烷/乙酸乙酯正相硅胶柱层析纯化,得2-(4-甲氧基苯基)-吡喃-4-酮。
9.根据权利要求4所述的制备方法,其特征在于,步骤(5)所述的取2-(4-甲氧基苯基)-吡喃-4-酮,在BBr3的作用下进行脱甲基反应得到2-(4-羟基苯基)-吡喃-4-酮的具体方法是:在-75℃或0℃条件下,取2-(4-甲氧基苯基)-吡喃-4-酮溶于二氯甲烷中,加入BBr3,混合物室温下搅拌6-8小时,加入冰水,乙酸乙酯萃取,合并有机层,即得2-(4-羟基苯基)-吡喃-4-酮。
10.根据权利要求4所述的制备方法,其特征在于,步骤(6)所述的取2-(4-羟基苯基)-吡喃-4-酮在氧化剂[双(三氟乙酰氧基)碘]苯(PIFA)或碘苯二乙酯(PIA)和催化剂2,2,6,6-四甲基-1-哌啶酮(TEMPO)的作用下进行氧化反应得到2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮具体方法是:取2-(4-羟基苯基)-吡喃-4-酮溶于乙腈与水的混合溶剂中,加入氧化剂和催化剂,室温搅拌3-6小时,产物用二氯甲烷/甲醇正相硅胶柱纯化,得2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮,所述的氧化剂为[双(三氟乙酰氧基)碘]苯(PIFA)或碘苯二乙酯(PIA),所述的催化剂为2,2,6,6-四甲基-1-哌啶酮(TEMPO),所述的乙腈与水的混合溶剂是将乙腈与水按体积比为9∶1的比例混合而成。
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| CN106083790A (zh) * | 2016-06-14 | 2016-11-09 | 武昌理工学院 | 一种2‑(1‑羟基‑4‑酮‑2,5‑环己二烯)‑吡喃‑4‑酮的合成方法 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106083790A (zh) * | 2016-06-14 | 2016-11-09 | 武昌理工学院 | 一种2‑(1‑羟基‑4‑酮‑2,5‑环己二烯)‑吡喃‑4‑酮的合成方法 |
| CN106083790B (zh) * | 2016-06-14 | 2018-06-15 | 武昌理工学院 | 一种2-(1-羟基-4-酮-2,5-环己二烯)-吡喃-4-酮的合成方法 |
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| CN102731456B (zh) | 2014-07-09 |
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