CN1073569C - 多核杂环羧酸类二丁基锡化合物及其合成 - Google Patents

多核杂环羧酸类二丁基锡化合物及其合成 Download PDF

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CN1073569C
CN1073569C CN99108233A CN99108233A CN1073569C CN 1073569 C CN1073569 C CN 1073569C CN 99108233 A CN99108233 A CN 99108233A CN 99108233 A CN99108233 A CN 99108233A CN 1073569 C CN1073569 C CN 1073569C
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dibutyl tin
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CN1238336A (zh
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杨频
王联红
丁健
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Shanxi University
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Abstract

一种多核杂环羧酸类二丁基锡化合物,其结构通式为:
其合成方法为:
4Bu2SnO+4RCOOH-→H2O+{[Bu2SnOOCR]2}2
该化合物在低剂量(10-8mol/L)时具有广谱,低毒,强效抗癌活性。

Description

多核杂环羧酸类二丁基锡化合物及其合成
本发明涉及一类具有抗癌活性的有机锡化合物及其合成方法。
Gielen等合成了一系列多核的取代苯甲酸二烃基锡化合物{[RR’SnOOCR”]2O}2(见文献Appl.Organomet.Chem.,1991,5,497~506.;1993,7,119~125.;1993,7,201~206.),普遍具有比顺铂(Cisplatin)好的体外抗MCF-7(乳腺癌)和WiDr(结肠癌)活性,但因化合物本身毒性太大而限制了抗癌活性。
本发明的目的在于开发一系列在低剂量(10-8mol/L)时具有广谱,低毒,强效抗癌活性的有机锡化合物。
已合成该系列多核杂环羧酸类二丁基锡化合物{[Bu2SnOOCR]2O}2 3种,正在合成和准备合成的达数十种。通过元素分析,红外光谱和核磁共振氢谱确认了该类配合物的结构通式为:其中R=
Figure C9910823300032
等杂环。R″=Bu。
表1中化合物2[(FuSnBu2)2O],2[(NiSnBu2)2O],2[(IsSnBu2)2O]。分别对应R″=Bu,R= 1.合成路线
                [1]2.制备方法
将4毫摩尔的配体RCOOH用回流法溶于甲苯∶无水乙醇为3∶1的133毫升混合液中,然后加入4毫摩尔的二丁基氧化锡Bu2SnO,回流6小时。反应完毕后,蒸去一半溶剂,余下的在抽空状态下蒸发,得粗产品,用无水乙醇或氯仿重结晶,抽滤收集,真空干燥,得多核的杂环羧酸类二丁基锡化合物{[Bu2SnOOCR]2O}2
配合物的元素分析和物理性质数据见表1,红外光谱数据见表2,核磁氢谱数据见表3。3.仪器:上海物理光学仪器厂生产的数字式熔点仪;240C元素分析仪和Vario EL型元素分析仪;岛津IR-435红外光谱仪和Perkin-Elmer-983型红外光谱仪;1H NMR用BrukerDRX300MHZ和Bruker AM-500MHZ核磁共振仪测定,TMS为内标,以氘代DMSO和氘代氯仿为溶剂;分子量用凝固点降低法测定,溶剂为萘。
                            表1  配合物的元素分析和物理性质数据
    化合物 分子量 外观      mp/℃  收率    元素分析/%          实测值(计算值)
  Mr   %         C       H       N
2[(FuSuBu2)2O]  1408  白色 102.6-103.8   88 44.21(44.32) 5.86(5.97)     --
2[(NiSuBu2)2O]  1452  白色 115.9-117.8   86 46.50(46.28) 6.17(6.06) 3.95(3.86)
2[(IsSuBu2)2O]  1452  白色 121.7-122.1   92 46.20(46.28) 5.98(6.06) 3.79(3.86)
注:Fu=2-Furoic acid,糠酸(2-呋喃羧酸);
Ni=Nicotinic acid,烟酸;
Is=Isonicotinic acid,异烟酸。
                    表2  配体及配合物的红外光谱数据(νcm-1)
    化合物    νOH    νCH3    νCH2 νC=O νSn-C  νSn-O νSn-O-Sn
      Fu  3100-2550      --      --  1680   --     --     --
2[(FuSnBu2)2O]      -- 2960 1370  2925 2850  1555  598    469    632
      Ni  2600-2400      --      --  1700   --     --     --
2[(NiSnBu2)2O]      -- 2960 1450  2925 2850  1550  603    461    620
      Is  2600-2400      --      --  1700   --      --     --
2[(IsSnBu2)2O]      -- 2960 1450  2925 2850  1640  607    458    623
 4.结构表征(1).红外光谱分析
原料RCOOH的IR光谱在3100-2400cm-1范围中,出现羟基伸缩振动吸收峰,在1680-1700cm-1出现羰基吸收峰。形成配合物后,上述羟基吸收峰消失,表明了羟基的去质子化和其氧原子的配位,而羰基吸收峰红移至1550-1640cm-1,说明羰基氧与金属锡形成了配键。因此,该类配合物的酰氧基是以双氧形式与锡原子配位的。在配合物中,均观察到了νSn-C’νSn-O’以及νSn-O-Sn’符合元素分析推测结果。
                                  表3  配合物的核磁氢谱数据(δppm)
化合物                      环 CH3       CH2      (CH2)2Sn
   Ha         Hb       Hc         Hd
 2[(FuSnBu2)2O] 7.30(d,4H) 6.54(m,4H) 7.61(d,4H) 0.92(m,12H) 1.41(m,8H) 1.89(m,16H)
 2[(NiSnBu2)2O] 9.31(d,4H) 8.39(d,4H) 7.41(m,4H) 8.79(d,4H) 0.91(m,12H) 1.38(m,8H) 1.75(m.16H)
 2[(IsSnBu2)2O] B.79(d,8H) 7.91(d,8H) 0.93(m,12H) 1.38(m,8H) 1.81(m,16H)
注:s-single;d-double;m-multi.(2).1H NMR分析
所有配合物中,杂环质子的吸收峰较之原料RCOOH都发生了明显的变化,这是RCOOH与锡配位后的诱导效应所致。配合物中,OH质子峰消失,证明了羟基的去质子和氧的配位,与红外光谱的推测一致。
综合上述IR,1H NMR以及元素分析等参数,可以认为该类化合物为多核杂环羧酸类二丁基锡化合物。(结构如通式所示)化合物的抗癌活性
经北京医科大学天然药物及仿生药物国家重点实验室(表4A,表4B)和中国科学院上海药物所新药筛选国家重点实验室(表5,表6)对上述化合物进行活性筛选,发现上述化合物具有强效活性。表4A-4B结果评价:-无效  +弱效  ++显效  +++强效
                         表4A  不同浓度配合物对肿瘤细胞生长的抑制率%
化合物    测试序号             KB*            BGC-823*
0.1μM   1μM    10μM   评价 0.1μM    1μM    10μM     评价
2[(FuSnBu2)2O] 98203740 -9.76   -79.17   97.18    ++ -6.24     41.62   97.19      +
2[(NiSnBu2)2O] 990068            未测定 14.78     64.92   97.72     ++
2[(IsSnBu2)2O] 990070           未测定 29.17     94.35   97.85     ++
*:人鼻咽癌KB:采用磺胺罗丹明(SRB)蛋白染色法;人胃癌BGC-823(SRB法)
                       表4B  不同浓度配合物对肿瘤细胞生长的抑制率%
测试序号         Bel-7402*            HCT-8*               HL-60*
0.1μM 1μM  10μM  评价 0.1μM  1μM   10μM 评价 0.1μM  1μM   10μM   评价
98203740 -16.61 -9.60  93.81   + 3.50    33.39  85.71    + 28.73   56.20    82.64   ++
990068  18.20  55.16 98.44  ++ -9.06   48.87  92.94    + -5.11   89.27    95.48   ++
990070  20.70  96.13 98.44  ++ 5.79    80.93  89.25   ++ 30.86   91.41    92.15   ++
*:人肝癌Bel-7402(SRB法);人结肠癌HCT-8(SRB法);人白血病HL-60:采用四氮唑盐(MTT)比色法;筛选方法:四氮唑盐(microculture tetrozolium,MTT)还原法细胞株:P388小鼠白血病作用时间:48h结果评定:无效:10-5mol/L<85%;
      弱效:10-5mol/L≥85%或10-6mol/L>50%;
      强效:10-6mol/L≥85%或10-7mol/L>50%;
                  表5  不同浓度(mol/L)配合物对肿瘤细胞生长的抑制率%
化合物  样品编号 10-4    10-5    10-6    10-7    10-8    评价
2[(FuSnBu2)20]     1093  95.8    100.0    63.9    61.1     26.4     强效
2[(NiSnBu2)2O]     1095  92.7    94.5     96.4    98.2     96.4     强效
2[(IsSnBu2)2O]     1097  94.5    98.2     98.2    96.4     98.2     强效
筛选方法:磺胺罗丹明B(sulforhodamine B,SRB)蛋白染色法细胞株:A-549人肺腺癌作用时间:72h结果评定:无效:10-5mol/L<85%;
      弱效:10-5mol/L≥85%或10-6mol/L>50%;
      强效:10-6mol/L≥85%或10-7mol/L>50%;
                 表6  不同浓度(mol/L)配合物对肿瘤细胞生长的抑制率%
化合物  样品编号 10-4    10-5    10-6    10-7    10-8     评价
2[(FuSnBu2)2O]    1093  95.8    93.8     95.8     93.5     50.0      强效
2[(NiSnBu2)2O]    1095  97.5    100.0    97.5     74.0     12.3      强效
2[(IsSnBu2)2O]    1097  97.5    98.8     97.5     53.1     69.1      强效
筛选方法:磺胺罗丹明B(sulforhodamine B,SRB)蛋白染色法,四氮唑盐(microculturetetrozoliurn,MTT)还原法细胞株:HO-8910人卵巢癌,SPC-A4人肺癌,HCT-116人结肠癌作用时间:72h结果评定:无效:10-5mol/L<85%;
      弱效:10-5mol/L≥85%或10-6mol/L>50%;
      强效:10-6mol/L≥85%或10-7mol/L>50%;
       表7  不同浓度(mol/L)顺铂对肿瘤细胞生长的抑制率%
细胞株  10-4 10-5 10-6 10-7 10-8   评价
HO-8910 84.4  56.3  0.4   4.7   0.0     无效SPC-A4  48.7  8.0   0.4   0.0   0.0     无效HCT-116 78.8  0.0   0.0   0.0   0.0     无效
从表5-表7的测试结果可知,本发明的系列有机锡化合物具广谱、低毒和强效抗癌活性:(1)广谱:该系列化合物对人鼻咽癌KB,人胃癌BGC-823,人肝癌Bel-7402,人结肠癌HCT-8,人白血病HL-60,P388小鼠白血病和A-549人肺腺癌肿瘤细胞等都有较强的抑制力。(2)低毒:以Wish-人羊膜细胞为例,用SRB法,作用时间72h,发现该系列化合物对正常细胞的毒性浓度为10-6mol/L,比其对肿瘤细胞的抑制浓度10-8mo1/L差两个数量级。(3)强效:该系列化合物对P388小鼠白血病和A-549人肺腺癌肿瘤细胞的抑制率呈强效性,而目前广泛应用于临床的顺铂对HO-8910人卵巢癌,SPC-A4人肺癌,HCT-116人结肠癌的抑制率为无效(见表7)。
实施例1:配合物2[(FuSnBu2)2)O,结构如前所述,其中R= (1):合成路线
             [1](2):制备方法
将0.4483克(4毫摩尔)的糠酸用回流法溶于甲苯∶无水乙醇为3∶1的120毫升混合液中,然后加入0.996克(4毫摩尔)的二丁基氧化锡Bu2SnO,回流6小时。反应完毕后,蒸去一半溶剂,余下的在抽空状态下蒸发,得粗产品,用无水乙醇或氯仿重结晶,抽滤收集,真空干燥,得2[(FuSnBu2)2O]。(3):用途
该化合物对人鼻咽癌KB,人胃癌BGC-823,人肝癌Bel-7402,人结肠癌HCT-8,人白血病HL-60有较强的抑制力,对P388小鼠白血病和A-549人肺腺癌肿瘤细胞的抑制率呈强效性。

Claims (2)

1.一种多核杂环羧酸类二丁基锡化合物,其特征在于它的结构通式为:
Figure C9910823300021
式中R”=Bu;式中R为杂环
Figure C9910823300022
2.如权利要求1所述锡化合物的合成方法,其特征在于步骤如下:
(1):
将4毫摩尔的配体RCOOH用回流法溶于甲苯∶无水乙醇为3∶1的133毫升混合液中,然后加入4毫摩尔的二丁基氧化锡Bu2SnO,回流6小时。反应完毕后,蒸去一半溶剂,余下的在抽空状态下蒸发,得粗产品,用无水乙醇或氯仿重结晶,抽滤收集,真空干燥,得多核的杂环羧酸类二丁基锡化合物{[Bu2SnOOCR]2O}2
CN99108233A 1999-06-02 1999-06-02 多核杂环羧酸类二丁基锡化合物及其合成 Expired - Fee Related CN1073569C (zh)

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US5155248A (en) * 1990-12-11 1992-10-13 Rhein Chemie Rheinau Gmbh Polyurethane catalysts

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