CN111689979A - 一种9-位哌嗪磺酰胺-10-羟基喜树碱类化合物及其制备方法和在抗肿瘤中的用途 - Google Patents

一种9-位哌嗪磺酰胺-10-羟基喜树碱类化合物及其制备方法和在抗肿瘤中的用途 Download PDF

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CN111689979A
CN111689979A CN201910186042.1A CN201910186042A CN111689979A CN 111689979 A CN111689979 A CN 111689979A CN 201910186042 A CN201910186042 A CN 201910186042A CN 111689979 A CN111689979 A CN 111689979A
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piperazine
hydroxycamptothecin
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刘映前
陈海乐
杨程杰
雷蒙·科布拉·劳威
李虎
高建梅
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Lanzhou University
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Abstract

本发明涉及式(I)所示的一种新的9‑位哌嗪磺酰胺‑10‑羟基喜树碱类化合物,以及这种化合物的制备方法和其在制备抗肿瘤药物中的用途。该化合物化学通式如结构式(I)。式(I)中化合物的制备方法是以10‑羟基喜树碱为反应原料,通过曼尼希反应,与多种不同取代磺酰哌嗪和多聚甲醛在1,4‑二氧六环的溶液中发生反应得到。经细胞毒活性测试证明,本发明所述的该类化合物具有较好的细胞毒活性,且所有化合物的抗肿瘤活性高于临床对照药物伊立替康,可用于制备抗肿瘤药物。本发明制备工艺简单、原料廉价易得,产品纯度高。

Description

一种9-位哌嗪磺酰胺-10-羟基喜树碱类化合物及其制备方法 和在抗肿瘤中的用途
技术领域
本发明涉及一种9-位哌嗪磺酰胺-10-羟基喜树碱类化合物,以及这类化合物的制备方法和其在制备抗肿瘤药物中的用途。属于医药领域。
背景技术
喜树碱(Camptothecin,简称CPT)是一种可用于治疗结肠癌、卵巢癌、肝癌、骨癌及白血病的喹啉类生物碱,由美国化学家WallM.E和WaniM.C于1966年从我国珙桐科植物喜树中提取分离得到(J.Am.Chem.Soc.1966,88,3888-3890)。喜树碱可作用于细胞分裂S期,通过与DNA和Topo I形成较为稳定的三元复合物,使得DNA复制和转录受阻,从而导致细胞死亡(The Journal of Biological Chemistry,1980,255:5560-5565)。未经修饰的天然喜树碱作为抗肿瘤药物用于临床时,不仅会产生严重的副作用,如呕吐、骨髓抑制和腹泻等,还会因为较差的水溶性而降低其生物利用度(Current Medicinal Chemistry-AnticancerAgents,2005,5(1):1-13.)。为此,众多科研工作者致力于降低喜树碱毒副作用和提高其水溶性。喜树碱-抗肿瘤构效关系研究(SAR研究)表明,喜树碱10-羟基不仅可以增强其水溶性,还能提高其抗肿瘤活性。同时,喜树碱9位的修饰对于喜树碱抗肿瘤活性提高尤为重要,多个9位修饰喜树碱衍生药物已被FDA批准上市或处于临床研究阶段,如拓扑替康、9-氨基喜树碱、9-硝基喜树碱等(Current Pharmaceutical Design,2008,14,1078-1097)。文献报道表明,曼尼希反应在药物化学的活性先导分子设计领域中运用极为广泛,是药物结构修饰研究中必不可少的修饰策略,特别是在抗肿瘤药物设计中常常被使用(J.Med.Chem.,1998,41,4012–4020)。因此,通过曼尼希反应保持喜树碱10位羟基结构,在喜树碱9位引入能够增强抗肿瘤活性的官能团是一种很好的修饰方式。同时,本课题组在前期的工作中发现,在喜树碱7位引入磺酰哌嗪能够很好的提高喜树碱的抗肿瘤活性(Bioorganic&Medicinal Chemistry Letters,2017,27,1750–1753)。所以,运用活性片段拼接的策略将磺酰哌嗪结构引入喜树碱9位,很可能产生具有较强抗肿瘤活性的喜树碱衍生物。
据此,在喜树碱-抗肿瘤的构效关系的启发下,通过曼尼希反应在喜树碱9位引入磺酰哌嗪的结构,本发明制备了一系列9-位哌嗪磺酰胺-10-羟基喜树碱类化合物,希望通过在喜树碱10位保留羟基的同时,在9位引入磺酰哌嗪结构,从而增加喜树碱水溶性和与Topo I的结合能力,得到活性更高、毒性更低的喜树碱衍生物。
发明内容
本发明提供一种喜树碱类化合物,同时提供这类化合物的制备方法及用途。
本发明所述的喜树碱类化合物是指具有如下通式(I)所示的化合物:
Figure BDA0001992890080000021
其中(I)式中R是苯基、4-甲基苯基、4-氟苯基、4-甲氧基苯基、4-乙基苯基、3-哌啶基、苄基、2,4-二硝基苯基、2,4-二氟苯基、2-萘基、4-异丙基苯基、2-噻吩基。
本发明所述的喜树碱类化合物制备方法按如下化学反应式1进行:
Figure BDA0001992890080000022
反应式1
以10-羟基喜树碱为反应原料,通过曼尼希反应,与多种不同取代磺酰哌嗪和多聚甲醛在1,4-二氧六环的溶液中发生反应,得到目标化合物2a-l。
本发明的9-位哌嗪磺酰胺-10-羟基喜树碱类衍生物的制备方法是:将适量的1,4-二氧六环加入圆底烧瓶中,再依次加入不同取代的磺酰哌嗪(1.1mmol)和多聚甲醛(2.2mmol),迅速向反应装置中通入氩气进行保护,然后将其混合物加热到90℃回流2h,使其充分反应,之后将原料10-羟基喜树碱(0.55mmol)投入反应体系中,同样用氩气保护后将温度升高至100℃反应2-8小时。TLC检测,反应结束后冷却至室温,在40℃以下减压蒸馏除去1,4-二氧六环,以氯仿/丙酮体系为洗脱剂,对目标化合物进行分离纯化。
在前述的制备方法中,其层析用硅胶柱采用200~300目的柱层析用硅胶。
本发明的9-位哌嗪磺酰胺-10-羟基喜树碱类衍生物可以在制备抗肿瘤药物中应用,更为具体的是:可以在制备治疗人肺腺癌药物中的应用,或者在制备治疗人乳腺癌药物中的应用;或者在制备治疗人口腔表皮样癌药物中的应用;或者在制备治疗人口腔表皮样癌细胞耐药株肿瘤药物中的应用;或者在制备治疗人乳腺癌药物中的应用。
经体外抗肿瘤活性筛选结果表明,式I的化合物对人肺腺癌细胞(A549)、人乳腺癌细胞株(MDA-MB-231)、人口腔表皮样癌细胞(KB)、人口腔表皮样癌细胞耐药株(KBvin)和人乳腺癌细胞(MCF-7)表现出较强的抑制活性,且大部分化合物高于目前临床药物伊立替康。因此,本发明的化合物可用于制备抗肿瘤药物。本发明所述的喜树碱类化合物结构新颖、合成工艺简单、产品纯度高,对肿瘤细胞表现出较强的抑制作用,具有优良的应用前景。
以下通过具体实施方式,对本发明的上述内容做进一步的详细说明。但不应将此理解为对本发明的限制。
具体实施方式
实施例1:目标化合物2a的合成
Figure BDA0001992890080000031
本发明所述的化合物2a的合成按化学反应式2进行:
Figure BDA0001992890080000032
反应式2
中间体1a的合成:将白色片状固体哌嗪(3mmol)溶于适量的干燥二氯甲烷中,搅拌使其充分溶解,并将其反应装置置于冰浴中约30分钟待其温度降至0℃。再将苯磺酰氯(1mmol)溶于适量干燥二氯甲烷中,用恒压漏斗将其滴入到冷却的混合物中,滴加结束后5min撤去冰浴,TLC检测反应进程,待原料反应完全后减压除去干燥二氯甲烷,用氯仿、水各萃取3次,合并有机相,减压蒸干得到中间体1a。
目标化合物2a的合成:将适量的1,4-二氧六环加入圆底烧瓶中,再依次加入制得的苯基磺酰哌嗪1a(1.1mmol)和多聚甲醛(2.2mmol),迅速向反应装置中通入氩气进行保护,然后将其混合物加热到90℃回流2h,使其充分反应,之后将原料10-羟基喜树碱(0.55mmol)投入反应体系中,同样用氩气保护后将温度升高至100℃进反应,TLC检测反应。反应结束后冷却至室温,在40℃以下减压蒸馏除去1,4-二氧六环,氯仿/丙酮体系为洗脱剂,对目标化合物进行柱层析,得目标化合物2a。反应所得产物检测数据如下:产率:76.3%;黄色固体;熔点:193.6-195.4℃;1H NMR(400MHz,DMS0-d6)8.63(s,1H,C7-H),7.96(d,1H,J=8Hz,C12-H),7.73-7.64(m,5H,Ar-H),7.44(d,1H,J=8Hz,C11-H),7.23(s,sH,C14-H),6.50(s,1H,20-OH),5.40(s,2H,C17-H),5.18(s,2H,C5-H),3.95(s,2H,C9-CH2-),2.89(s,4H,Piperazine-H),2.61(s,4H,Piperazine-H),1.91-1.80(m,2H,C18-H),0.87(t,3H,C19-H);13C NMR(100MHz,DMS0-d6)δ:172.98,157.24,155.87,150.45,149.44,146.29,144.01,135,32,133.73,130.63,130.12,129.88,129.47,127.99,127.25,122.79,118.55,114.47,96.25,72.86,65.70,51.85,50.80,46.35,30.73,8.23;Anal.Calcd ForC31H30N4O7S:C,61.78;H,5.02;N,9.30.Found:C,61.79;H,5.01;N,9.31.MS-ESI m/z:625.2[M+Na]+.
实施例2:目标化合物2b的合成
Figure BDA0001992890080000041
与实施例1同,仅以4-甲基苯磺酰氯代替苯磺酰氯。反应所得产物检测数据如下:产率:77.5%;黄色固体;熔点:201.6-203.8℃;1H NMR(400MHz,DMS0-d6)δ:8.63(s,1H,C7-H),7.96(d,1H,J=8Hz,C12-H),7.59(d,2H,J=8Hz,Ar-H),7.45-7.42(m,3H,C11-H,Ar-H),7.23(s,1H,C14-H),6.50(s,1H,20-OH),5.40(s,2H,C17-H),5.18(s,2H,C5-H),3.96(s,2H,C9-CH2-),2.85(s,4H,Piperazine-H),2.61(s,4H,Piperazine-H),2.38(s,3H,Ar-CH3 ),1.89-1.82(m,2H,C18-H),0.87(t,3H,C19-H);13C NMR(100MHz,DMS0-d6)δ:172.98,157.18,155.83,150.40,149.39,146.26,143.98,134.89,132.65,130.60,129.79,129.51,129.24,128.33,128.16,127.19,123.35,118.50,114.47,96.21,72.85,65.68,51.90,50.74,46.43,30.71,21.87,8.22;Anal.Calcd For C32H32N4O7S:C,62.33;H,5.23;N,9.09.Found:C,62.34;H,5.25;N,9.09.MS-ESI m/z:639.2[M+Na]+.
实施例3:目标化合物2c的合成
Figure BDA0001992890080000051
与实施例1同,仅以4-氟苯磺酰氯代替苯磺酰氯。产率:78.1%;黄色固体;熔点:179.1-181.5℃;1H NMR(400MHz,DMS0-d6)δ:8.64(s,1H,C7-H),7.96(d,1H,J=8Hz,C12-H),7.81-7.77(m,2H,Ar-H),7.50-7.43(m,3H,C11-H,Ar-H),7.23(s,1H,C14-H),6.50(s,1H,20-OH),5.40(s,2H,C17-H),5.19(s,2H,C5-H),3.96(s,2H,C9-CH2-),2.85(s,4H,Piperazine-H),2.61(s,4H,Piperazine-H),1.87-1.84(m,2H,C18-H),0.87(t,3H,C19-H);13C NMR(100MHz,DMS0-d6)δ:172.98,166.36,157.25,155.87,150.45,149.44,146.29,144.01,131.79,131.13,131.04,130.64,130.12,129.47,127.27,122.79,118.55,117.23,117.00,114.47,96.25,72.86,65.70,51.82,50.80,46.32,30.73,8.23;Anal.Calcd ForC31H29FN4O7S:C,59.99;H,4.71;N,9.03.Found:C,59.99;H,4.73;N,9.05.MS-ESI m/z:643.2[M+Na]+.
实施例4:目标化合物2d的合成
Figure BDA0001992890080000052
与实施例1同,仅以4-甲氧基苯磺酰氯代替苯磺酰氯。产率:78.8%;黄色固体;熔点:214.4-217.2℃;1H NMR(400MHz,DMS0-d6)δ:8.62(s,1H,C7-H),7.95(d,1H,J=8Hz,C12-H),7.64(d,2H,J=8Hz,Ar-H),7.44(d,1H,J=8Hz,C11-H),7.23(s,1H,C14-H),7.13(d,2H,J=8Hz,Ar-H),6.50(s,1H,20-OH),5.40(s,2H,C17-H),5.18(s,2H,C5-H),3.95(s,2H,C9-CH2-),3.82(s,3H,Ar-OCH3),2.84(s,4H,Piperazine-H),2.61(s,4H,Piperazine-H),2.19(s,3H,Ar-CH3 ),1.89-1.82(m,2H,C18-H),0.88(t,3H,C19-H);13C NMR(100MHz,DMS0-d6)δ:172.99,163.21,157.23,155.88,150.44,149.43,146.28,144.01,130.62,130.25,130.12,129.44,127.20,126.69,122.80,118.54,115.00,114.47,96.25,72.86,65.70,56.14,51.93,51.84,50.80,46.35,30.73,9.23;Anal.Calcd For C32H32N4O8S:C,60.75;H,5.10;N,8.86.Found:C,60.76;H,5.11;N,8.87.MS-ESI m/z:655.2[M+Na]+.
实施例5:目标化合物2e的合成
Figure BDA0001992890080000061
与实施例1同,仅以4-乙基苯磺酰氯代替苯磺酰氯。产率:75.2%;黄色固体;熔点:205.3-207.0℃;1H NMR(400MHz,DMS0-d6)δ:8.62(s,1H,C7-H),7.95(d,1H,J=8Hz,C12-H),7.62(d,2H,J=8Hz,Ar-H),7.47-7.43(m,3H,C11-H,Ar-H),7.23(s,1H,C14-H),6.50(s,1H,20-OH),5.40(s,2H,C17-H),5.17(s,2H,C5-H),3.95(s,2H,C9-CH2-),2.86(s,4H,Piperazine-H),2,68(d,2H,J=8Hz,Piperazine-CH2),2.61(s,4H,Piperazine-H),1.89-1.82(m,2H,C18-H),1.18(t,3H,Piperazine-CH2 CH3 ),0.87(t,3H,C19-H);13C NMR(100MHz,DMS0-d6)δ:172.98,157.24,155.87,150.45,150.04,149.45,146.29,144.02,132.57,130.63,130.13,129.47,129.15,128.18,127.25,122.80,118.55,114.50,96.24,72.86,65.70,51.86,50.80,46.35,30.72,28.42,15.38,8.23;Anal.Calcd For C33H34N4O7S:C,62.84;H,5.43;N,8.88.Found:C,62.85;H,5.44;N,8.89.MS-ESI m/z:653.3[M+Na]+.
实施例6:目标化合物2f的合成
Figure BDA0001992890080000062
与实施例1同,仅以吡啶-3-磺酰氯代替苯磺酰氯。产率:73.3%;黄色固体;熔点:223.9-225.2℃1H NMR(400MHz,DMS0-d6)δ:8.89-8.86(m,2H,Pyrazine-H),8.64(s,1H,C7-H),8.15-8.12(m,1H,Pyrazine-H),7.96(d,1H,J=8Hz,C12-H),7.69-7.66(m,1H,Pyrazine-H),7.44(d,2H,J=12Hz,C11-H),7.23(s,1H,C14-H),6.50(s,1H,20-OH),5.40(s,2H,C17-H),5.18(s,2H,C5-H),3.96(s,2H,C9-CH2-),2.96(s,4H,Piperazine-H),2.62(s,4H,Piperazine-H),1.89-1.82(m,2H,C18-H),0.87(t,3H,C19-H);13C NMR(100MHz,DMS0-d6)δ:172.98,157.24,155.84,154.27,150.45,149.44,148.20,146.29,144.02,136.10,132.26,130.65,130.10,129.49,127.32,124.97,122.79,118.55,114.49,96.26,72.86,65.70,51.79,50.79,46.24,30.73,8.23;Anal.Calcd For C30H29N5O7S:C,59.69;H,4.84;N,11.60.Found:C,59.69;H,4.85;N,11.61.MS-ESI m/z:626.2[M+Na]+.
实施例7:目标化合物2g的合成
Figure BDA0001992890080000071
与实施例1同,仅以苄磺酰氯代替苯磺酰氯。产率:75.5%;黄色固体;熔点:246.3-248.1℃;1H NMR(400MHz,DMS0-d6)8.76(s,1H,C7-H),7.99(d,1H,J=8Hz,C12-H),7.47(d,1H,J=12Hz,C11-H),7.40-7.34(m,5H,Ar-H),7.26(s,1H,C14-H),6.51(s,1H,20-OH),5.42(s,2H,C17-H),5.26(s,2H,C5-H),4.40(s,2H,Piperazine-CH2 ),4.02(s,2H,C9-CH2-),3.14(s,4H,Piperazine-H),2.57(s,4H,Piperazine-H),1.90-1.83(m,2H,C18-H),0.88(t,3H,C19-H);13C NMR(100MHz,DMS0-d6)δ:172.99,157.32,156.08,150.51,149.48,146.35,144.06,131.37,130.65,130.12,129.88,129.47,128.80,128.62,127.29,122.93,118.60,114.40,96.30,72.88,65.72,54.63,52.37,50.84,45.86,30.74,8.25;Anal.Calcd ForC32H32N4O7S:C,62.33;H,5.23;N,9.09.Found:C,62.35;H,5.22;N,9.09.MS-ESI m/z:639.2[M+Na]+.
实施例8:目标化合物2h的合成
Figure BDA0001992890080000072
与实施例1同,仅以2,4-二硝基苯磺酰氯代替苯磺酰氯。产率:66.8%;黄色固体;熔点:231.7-233.5℃;1H NMR(400MHz,DMS0-d6)δ:8.82(s,1H,C7-H),8.62(d,1H,J=4Hz,Ar-H),8.00(d,1H,J=8Hz,C12-H),7.50-7.40(m,3H,C11-H,Ar-H),7.23(s,1H,C14-H),6.51(s,1H,20-OH),5.42(s,2H,C17-H),5.26(s,2H,C5-H),4.09(s,2H,C9-CH2-),3.29(s,4H,Piperazine-H),2.68(s,4H,Piperazine-H),1.91-1.84(m,2H,C18-H),0.89(t,3H,C19-H);13C NMR(100MHz,DMS0-d6)δ:172.99,157.31,156.04,150.50,149.50,149.29,146.35,144.09,137.63,137.47,130.67,130.15,129.57,128.64,127.44,123.92,122.88,120.74,118.60,114.51,96.30,72.88,63.27,52.27,50.85,50.54,30.74,8.24;Anal.Calcd ForC31H28N6O11S:C,53.76;H,4.07;N,12.13.Found:C,53.77;H,4.08;N,12.15.MS-ESI m/z:715.2[M+Na]+.
实施例9:目标化合物2i的合成
Figure BDA0001992890080000081
与实施例1同,仅以2,4-氟苯磺酰氯代替苯磺酰氯。产率:70.5%;黄色固体;熔点:252.6-254.3℃;1H NMR(400MHz,DMS0-d6)δ:8.69(s,1H,C7-H),7.97(d,1H,J=8Hz,C12-H),7.86-7.80(m,1H,Ar-H),7.63-7.57(m,1H,Ar-H),7.45(d,1H,J=8Hz,C11-H),7.35-7.30(m,1H,Ar-H),7.24(s,1H,C14-H),6.49(s,1H,20-OH),5.41(s,2H,C17-H),5.21(s,2H,C5-H),3.98(s,2H,C9-CH2-),3.06(s,4H,Piperazine-H),2.62(s,4H,Piperazine-H),1.88-1.84(m,2H,C18-H),0.88(t,3H,C19-H);13C NMR(100MHz,DMS0-d6)δ:172.98,157.27,155.89,150.47,149.45,146.32,144.04,133.46,130.65,130.12,129.52,127.37,122.82,118.57,114.48,113.13,106.96,96.26,72.87,65.71,52.00,50.82,45.92,30.73,8.23;Anal.Calcd For C31H28F2N4O7S:C,58.30;H,4.42;N,8.77.Found:C,58.31;H,4.43;N,8.78.MS-ESI m/z:661.2[M+Na]+.
实施例10:目标化合物2j的合成
Figure BDA0001992890080000082
与实施例1同,仅以2-萘磺酰氯代替苯磺酰氯。产率:77.6%;黄色固体;熔点:277.1-278.6℃;1H NMR(400MHz,DMS0-d6)δ:8.58(s,1H,C7-H),8.41(s,1H,Ar-H),8.19-8.05(m,3H,Ar-H),7.93(d,1H,J=12Hz,C12-H),7.74-7.65(m,3H,Ar-H),7.42(d,1H,J=8Hz,C11-H),7.21(s,1H,C14-H),6.47(s,1H,20-OH),5.38(s,2H,C17-H),5.12(s,2H,C5-H),3.94(s,2H,C9-CH2-),2.97(s,4H,Piperazine-H),2.62(s,4H,Piperazine-H),1.89-1.81(m,2H,C18-H),0.86(t,3H,C19-H);13C NMR(100MHz,DMS0-d6)δ:172.99,157.24,155.87,150.45,149.44,146.29,144.14,144.01,132.29,130.63,130.30,130.12,129.45,128.07,127.23,122.80,118.54,114.48,96.25,72.86,65.70,51.84,50.80,46.34,30.72,8.23;Anal.Calcd For C35H32N4O7S:C,64.40;H,4.94;N,8.58.Found:C,64.41;H,4.95;N,8.59.MS-ESI m/z:675.2[M+Na]+.
实施例11:目标化合物2k的合成
Figure BDA0001992890080000091
与实施例1同,仅以4-异丙基苯磺酰氯代替苯磺酰氯。产率:75.1%;黄色固体;熔点:206.4-208.2℃;1H NMR(400MHz,DMS0-d6)δ:8.63(s,1H,C7-H),7.95(d,1H,J=12Hz,C12-H),7.62(d,1H,J=8Hz,Ar-H),7.74-7.65(m,3H,Ar-H),7.50-7.43(m,Ar-H,C11-H),7.23(s,1H,C14-H),6.49(s,1H,20-OH),5.40(s,2H,C17-H),5.17(s,2H,C5-H),3.95(s,2H,C9-CH2-),2.97(m,1H,Ar-CH),2.86(s,4H,Piperazine-H),2.61(s,4H,Piperazine-H),1.89-1.82(m,2H,C18-H),1.20(d,6H,J=4Hz,CHCH3CH3 ),0.87(t,3H,C19-H);13C NMR(100MHz,DMS0-d6)δ:172.98,157.25,155.87,154.50,150.4,149.46,146.30,144.02,132,73,130.64,130.15,129.49,128.24,127.78,127.28,122.79,118.56,114.53,96.24,72.86,65.70,51.88,50.81,46.34,33.81,30.72,23.85,8.23;Anal.Calcd ForC34H36N4O7S:C,63.34;H,5.63;N,8.69.Found:C,63.35;H,5.64;N,8.69.MS-ESI m/z:667.3[M+Na]+.
实施例12:目标化合物2k的合成
Figure BDA0001992890080000092
与实施例1同,仅以2-噻吩磺酰氯代替苯磺酰氯。与实施例1同,仅以4-甲基苯磺酰氯代替苯磺酰氯。产率:76.1%;黄色固体;熔点:189.5-191.2℃;1H NMR(400MHz,DMS0-d6)δ:8.66(s,1H,C7-H),8.07-7.96(m,2H,Thiophene-H,C12-H),7.63-7.61(m,1H,Thiophene-H),7.46(d,1H,J=12Hz,C11-H),7.31-7.24(m,2H,Thiophene-H,C14-H),6.50(s,1H,20-OH),5.41(s,2H,C17-H),5.20(s,2H,C5-H),3.97(s,2H,C9-CH2-),2.93(s,4H,Piperazine-H),2.65(s,4H,Piperazine-H),1.89-1.82(m,2H,C18-H),0.88(t,3H,C19-H);13C NMR(100MHz,DMS0-d6)δ:172.98,157.25,155.86,150.46,149.47,146.31,144.04,135.17,134.40,133.59,130.66,130.16,129.53,128.84,127.33,122.81,118.56,114.53,96.25,72.87,65.71,51.74,50.83,46.38,30.73,8.24;Anal.Calcd For C29H28N4O7S2:C,57.22;H,4.64;N,9.20.Found:C,57.23;H,4.65;N,9.21.MS-ESI m/z:631.2[M+Na]+.
实施例13:化合物2a-l的细胞毒活性的试验方法及结果
本发明的药理实验采用磺酰罗丹明B(sulforhodamine B,SRB)比色法。肿瘤细胞培养选用10%胎牛血清(FBS)的RPMI-1640培养基,将肿瘤细胞接种于96孔板,每个孔培养3-5×103个细胞,加入不同浓度的待测试目标化合物溶液。培养72小时后,每孔加入预冷的三氯乙酸溶液(50%,w/v)固定细胞,冰箱中固定30分钟。待96孔板室温下晾干后,每孔加入0.04%(w/v)的SRB染液(1%的乙酸配制,购自Sigma Chemical公司),染色30分钟后倒掉染液,用乙酸冲洗4次,去除未结合的染料,室温晾干。用100μL非缓冲Tris-base碱液溶解与细胞蛋白结合的染料,水平摇床上振荡20分钟,采用ELx800吸收光酶标仪(美国Bio-Tek公司生产,操作软件Gen5)测定515nm处吸收值。所有试验设3个平行组或重复三次。化合物2a-l的细胞毒活性测试结果见表1。
表1化合物2a-l对4种细胞株的细胞毒活性(μM)
Figure BDA0001992890080000101
注:(1)筛选方法:磺酰罗丹明B比色法;(2)作用时间:48小时;(3)化合物编号2a-l分别为前述实施例1至实施例12所得产物。
体外实验表明,本发明所述的化合物2a-l对人肺腺癌细胞(A549)、人乳腺癌细胞株(MDA-MB-231)、人口腔表皮样癌细胞(KB)、人口腔表皮样癌细胞耐药株(KBvin)和人乳腺癌细胞(MCF-7)均表现出较强的抑制活性,且大部分化合物高于目前临床药物伊立替康。表现出较好的应用前景,因此本发明所制得化合物可用于制备抗肿瘤药物,且该类化合物合成方法简单、原料廉价易得,产品纯度高。

Claims (9)

1.如式I所示的一种9-位哌嗪磺酰胺-10-羟基喜树碱类化合物。
Figure FDA0001992890070000011
其中(I)式中R是苯基、4-甲基苯基、4-氟苯基、4-甲氧基苯基、4-乙基苯基、3-哌啶基、苄基、2,4-二硝基苯基、2,4-二氟苯基、2-萘基、4-异丙基苯基、2-噻吩基。
2.权利要求1所述的9-位哌嗪磺酰胺-10-羟基喜树碱类衍生物的制备方法,其特征在于:将适量的1,4-二氧六环加入圆底烧瓶中,再依次加入不同取代的磺酰哌嗪(1.1mmol)和多聚甲醛(2.2mmol),迅速向反应装置中通入氩气进行保护,然后将其混合物加热到90℃回流2h,使其充分反应,之后将原料10-羟基喜树碱(0.55mmol)投入反应体系中,同样用氩气保护后将温度升高至100℃反应2-8小时。TLC检测,反应结束后冷却至室温,在40℃以下减压蒸馏除去1,4-二氧六环,以氯仿/丙酮体系为洗脱剂,对目标化合物进行分离纯化,最终得到目标化合物。
3.根据权利要求2所述的任一方法,其特征在于层析用硅胶柱采用200~300目的柱层析用硅胶。
4.权利要求1所述的9-位哌嗪磺酰胺-10-羟基喜树碱类化合物在制备抗肿瘤药物中的应用。
5.根据权利要求1所述的9-位哌嗪磺酰胺-10-羟基喜树碱类化合物在制备治疗人肺腺癌(A549)药物中的应用。
6.根据权利要求1所述的9-位哌嗪磺酰胺-10-羟基喜树碱类化合物在制备治疗人乳腺癌(MDA-MB-231)药物中的应用。
7.根据权利要求1所述的9-位哌嗪磺酰胺-10-羟基喜树碱类化合物在制备治疗人口腔表皮样癌(KB)药物中的应用。
8.根据权利要求1所述的9-位哌嗪磺酰胺-10-羟基喜树碱类化合物在制备治疗人口腔表皮样癌耐药株(KBvin)药物中的应用。
9.根据权利要求1所述的9-位哌嗪磺酰胺-10-羟基喜树碱类化合物在制备治疗人乳腺癌细胞(MCF-7)药物中的应用。
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