CN103130836A - 具有抗肿瘤活性的铂(ii)配合物及其制备方法 - Google Patents
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Abstract
Description
技术领域
本发明涉及医药技术领域,涉及一种铂配合物,这种配合物具有抗肿瘤活性。
背景技术
癌症是一种严重威胁人类健康和生命的疾病,是继心脑血管疾病之后的全球第二大死亡疾病。近年来,由于环境恶化、不良生活习惯及人口老龄化等因素的影响,我国的癌症发病率不断增加。癌症已成为人类亟待攻克的医学难题之一。
在20世纪60年代,美国密执安州立大学教授Rosenberg在研究直流电场对大肠杆菌生长的影响时发现顺铂具有抗癌活性,并通过临床验证,顺铂对多种肿瘤均有良好的治疗效果,从而开辟了金属铂络合物抗癌作用研究的新领域。目前铂类抗癌药物已成为癌症化疗中不可缺少的药物,已有顺铂、卡铂、奥沙利铂、奈达铂、舒铂、洛铂等获批准上市。但目前上市的药物也存在许多自身固有的缺点:毒副作用大,会导致恶心、呕吐、骨髓抑制等,彼此之间存在交叉耐药性及抗癌谱窄等,这些缺点限制了它们更广泛的使用。寻找低毒、高效、广谱及缺乏交叉耐药性成为了铂族药物研究的重要方向。
发明内容
本发明的目的是提供具有抗肿瘤活性的铂配合物。
本发明涉及的铂配合物,是分别以甲基丙二酸和乙基丙二酸为离去基团,以氨分子为伴随基团,结构如下:
本发明的铂配合物中文化学名称为顺式-甲基丙二酸-二氨合铂(II)分子式为Pt(NH3)2(C4H4O4),分子量为345。顺式-乙基丙二酸-二氨合铂(II)分子式为Pt(NH3)2(C5H6O4),分子量为359。
该抗肿瘤活性的铂(II)配合物的制备方法是:
(1)以顺式-二碘-二氨合铂(II)(碘铂)为起始原料,与硝酸银按物质的量比为1:2,在55~65℃下反应3~5h;
(2)碘铂与甲基丙二酸钠的物质的量之比为1: 1.1,60℃反应1h;
(3)碘铂与乙基丙二酸钠的物质的量之比为1: 1.1,60℃反应1h。
接种细胞:用含10%胎牛血清的培养液(DMEM或者RMPI1640)配成单个细胞悬液,以每孔5000-10000个细胞接种到96孔板,每孔体积100μl,贴壁细胞提前12小时接种培养。加入待测化合物溶液(固定浓度40μM初筛,在该浓度对肿瘤细胞生长抑制在50%附近的化合物设5个浓度进入梯度复筛),每孔终体积200μl,每种处理均设3个复孔。显色:37摄氏度培养48小时后,每孔加MTT溶液20μl。继续孵育4小时,终止培养,吸弃孔内培养上清液,每孔加200μl的SDS溶液(10%),过夜孵育(温度37℃),使结晶物充分融解。比色:选择595nm波长,酶联免疫检测仪(Bio-Rad 680)读取各孔光吸收值,记录结果,以浓度为横坐标,细胞存活率为纵坐标绘制细胞生长曲线,应用两点法(Reed and Muench法)计算化合物的IC50(μm)值。
结果见下表:
| 白血病 | 肝癌 | 肺癌 | 乳腺癌 | 结肠癌 | |
| 化合物名称 | HL-60 | SMMC-7721 | A-549 | MCF-7 | SW480 |
| 顺铂 | 3.97 | 4.96 | 8.19 | 10.78 | 11.56 |
| 顺式-甲基丙二酸-二氨合铂(II) | 13.18 | >40 | >40 | >40 | >40 |
| 顺式-乙基丙二酸-二氨合铂(II) | 9.10 | >40 | >40 | >40 | >40 |
从结果可以看出,化合物具有一定的体外肿瘤生长抑制活性。
具体实施方式
本发明铂配合物制备:所用试剂:市售纯度不小于98%的顺式-二碘-二氨合铂(II)(碘铂),市售分析纯硝酸银,市售分析纯甲基丙二酸钠,市售分析纯乙基丙二酸钠。
制备过程:
一、顺式-甲基丙二酸-二氨合铂(II)的制备
实施例1:称取4.8g碘铂用水搅成悬浊液,置于恒温磁力搅拌器上,称取3.4g硝酸银用水溶解后加入到碘铂的悬浊液中,55℃搅拌反应4h,过滤除去AgI沉淀后得到浅黄色透明溶液。浅黄色透明溶液置于恒温磁力搅拌器上加热至60℃,称取1.8g甲基丙二酸钠用水溶解后滴加到上述浅黄色透明溶液中,反应1h后将得到的沉淀过滤烘干,得1.9g类白色结晶性粉末,产率: 55.1%。用沸水重结晶后烘干得到0.5g白色结晶性粉末,产率:26.3%。
实施例2:称取4.8g碘铂用水搅成悬浊液,置于恒温磁力搅拌器上,称取3.4g硝酸银用水溶解后加入到碘铂的悬浊液中,60℃搅拌反应4h,过滤除去AgI沉淀后得到浅黄色透明溶液。浅黄色透明溶液置于恒温磁力搅拌器上加热至60℃,称取1.8g甲基丙二酸钠用水溶解后滴加到上述浅黄色透明溶液中,反应1h后将得到的沉淀过滤烘干,得2.1g类白色结晶性粉末,产率: 61.8%。用沸水重结晶后烘干得到0.7g白色结晶性粉末,产率:33.3%。
实施例3:称取4.8g碘铂用水搅成悬浊液,置于恒温磁力搅拌器上,称取3.4g硝酸银用水溶解后加入到碘铂的悬浊液中,65℃搅拌反应4h,过滤除去AgI沉淀后得到浅黄色透明溶液。浅黄色透明溶液置于恒温磁力搅拌器上加热至60℃,称取1.8g甲基丙二酸钠用水溶解后滴加到上述浅黄色透明溶液中,反应1h后将得到的沉淀过滤烘干,得2.0g类白色结晶性粉末,产率: 58.0%。用沸水重结晶后烘干得到0.7g白色结晶性粉末,产率:35.0%。
二、顺式-乙基丙二酸-二氨合铂(II)的制备
实施例1:称取4.8g碘铂用水搅成悬浊液,置于恒温磁力搅拌器上,称取3.4g硝酸银用水溶解后加入到碘铂的悬浊液中,55℃搅拌反应4h,过滤除去AgI沉淀后得到浅黄色透明溶液。浅黄色透明溶液置于恒温磁力搅拌器上加热至60℃,称取1.9g乙基丙二酸钠用水溶解后滴加到上述浅黄色透明溶液中,反应1h后将得到的沉淀过滤烘干,得1.7g类白色结晶性粉末,产率:47.4%。用沸水重结晶后烘干得到0.4g白色结晶性粉末,产率:23.5%。
实施例2:称取4.8g碘铂用水搅成悬浊液,置于恒温磁力搅拌器上,称取3.4g硝酸银用水溶解后加入到碘铂的悬浊液中,60℃搅拌反应4h,过滤除去AgI沉淀后得到浅黄色透明溶液。浅黄色透明溶液置于恒温磁力搅拌器上加热至60℃,称取1.9g乙基丙二酸钠用水溶解后滴加到上述浅黄色透明溶液中,反应1h后将得到的沉淀过滤烘干,得2.0g类白色结晶性粉末,产率:55.7%。用沸水重结晶后烘干得到0.7g白色结晶性粉末,产率:35.0%。
实施例3:称取4.8g碘铂用水搅成悬浊液,置于恒温磁力搅拌器上,称取3.4g硝酸银用水溶解后加入到碘铂的悬浊液中,65℃搅拌反应4h,过滤除去AgI沉淀后得到浅黄色透明溶液。浅黄色透明溶液置于恒温磁力搅拌器上加热至60℃,称取1.9g乙基丙二酸钠用水溶解后滴加到上述浅黄色透明溶液中,反应1h后将得到的沉淀过滤烘干,得1.9g类白色结晶性粉末,产率:52.9%。用沸水重结晶后烘干得到0.7g白色结晶性粉末,产率:36.8%。
结构表征
元素分析
质谱分析
以甲醇为溶剂,测得的ESI-MS(m/z)数据为368( [M+Na]+)、382( [M+Na]+ ),数据与标题化合物的理论分子量一致。
1H NMR分析
Claims (3)
2.一种具有抗肿瘤活性的铂(II)配合物的制备方法,其特征在于:
(1)以顺式-二碘-二氨合铂(II)(碘铂)为起始原料,与硝酸银按物质的量比为1:2,在55~65℃下反应3~5h;
(2)碘铂与甲基丙二酸钠的物质的量之比为1: 1.1,60℃反应1h;
(3)碘铂与乙基丙二酸钠的物质的量之比为1: 1.1,60℃反应1h。
3.权利要求1所述的化合物在制备抗肿瘤药物中的应用。
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|---|---|---|---|---|
| EP0219936A1 (en) * | 1985-08-27 | 1987-04-29 | Nippon Kayaku Kabushiki Kaisha | Novel platinum complexes |
| CN1125731A (zh) * | 1994-10-31 | 1996-07-03 | 西安五环(集团)股份有限公司 | 具抗癌效应的顺式-二氨-1,1-环戊二羧酸根合铂(ii)的化合物及其合成方法 |
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