CN1948314A - 8-芳胺基-3H-咪唑[4,5-g]喹唑啉类衍生物及其固相合成方法 - Google Patents
8-芳胺基-3H-咪唑[4,5-g]喹唑啉类衍生物及其固相合成方法 Download PDFInfo
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- 125000002294 quinazolinyl group Chemical class N1=C(N=CC2=CC=CC=C12)* 0.000 title 1
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Abstract
本发明涉及化合物合成,主要是一种8-芳胺基-3H-咪唑[4,5-g]喹唑啉类衍生物及其固相合成方法,在喹唑啉母环中的苯环上再并联上一个咪唑环,并且使得改造后的新结构中的三个环成线性排布。同时,我们运用组合化学的方法,使得改造后的结构中2位和3位的取代基以及8位芳基上的取代基可以有多种变化,有利于快速和大量地合成具有分子多样性的8-芳胺基-3H-咪唑[4,5-g]喹唑啉类化合物分子库。本发明提供的8-芳胺基-3H-咪唑[4,5-g]喹唑啉衍生物的合成条件温和,原料易得,纯度和产率均较高,有利于高通量筛选并发现抗癌药物先导化合物。
Description
技术领域
本发明属化合物合成,主要涉及一种8-芳胺基-3H-咪唑[4,5-g]喹唑啉类衍生物及其固相合成方法。
背景技术
近年来,研究上皮细胞生长因子受体(epidermal growth factor receptor,简称EGFR)的抑制剂已成为研发抗癌新药的新方向。EGFR为酪氨酸激酶,调控着细胞内的一系列信号传导。在肿瘤细胞的分化、生长、发育、抗衰老和迁移方面有着极其重要的作用。EGFR的抑制剂是从分子机理出发研制而成。因此,与传统药物相比,对癌细胞的攻击有更好的选择性。具有副作用小,效果好的特点。
大量研究表明4-芳胺基喹唑啉类化合物是一种高效高选择性的EGFR抑制剂。例如:目前刚上市的两个治疗非小型细胞肺癌的新药Iressa和Tarceva;药物先导化合物4-(3-溴)苯胺基-6,7-二甲氧基喹唑啉(PD153035)是一种非常好的EGFR抑制剂,其IC50值达到0.025nM(J.Med.Chem.1996,39,918-28)。进一步研究表明:类似于8-芳胺基-3H-咪唑[4,5-g]喹唑啉类化合物具有线性排列三环结构的化合物的活性也很不错,例如8-(3-溴苯基)-3H-咪唑[4,5-g]喹唑啉,其IC50值可达0.008nM。最近研究报道:该类结构对于癌细胞HepG2、U251、Caki-1、UMRC2、Hs578T、MCF-7和Lox IMVI的生长均有抑制作用(US2005187231)。细胞生物学研究发现:此类三环结构的喹唑啉化合物能够快速进入细胞,通过高选择性地竞争EGFR的ATP端绑定位点,从而切断由EGF-激发而产生的信号传导。所以,大量合成具有分子多样性的8-芳胺基-3H-咪唑[4,5-g]喹唑啉类结构的化合物库对于筛选并发现抗肾癌、肺癌、乳腺癌和脑癌的药物先导化合物,具有重要意义。
发明内容
本发明的目的是对已有的4-芳胺基喹唑啉类化合物的结构进行改造,而提供一种8-芳胺基-3H-咪唑[4,5-g]喹唑啉类衍生物及其固相合成方法,在喹唑啉母环中的苯环上再并联上一个咪唑环,并且使得改造后的新结构中的三个环成线性排布。同时,我们运用组合化学的方法,使得改造后的结构中2位和3位的取代基以及8位芳基上的取代基可以有多种变化,有利于快速和大量地合成具有分子多样性的8-芳胺基-3H-咪唑[4,5-g]喹唑啉类化合物分子库。
本发明解决其技术问题所采用的技术方案。本发明提供的这种8-芳胺基-3H-咪唑[4,5-g]喹唑啉衍生物具有以下结构通式:
其中R1为烷氧基、烷巯基、氢、烷基、C3-C7的环烷基、C1-C10的连有其它取代基团的烷基、氟、氯、溴、碘、氰基,可以在苯环上任意取代位置,可以是多重取代。
R2为氢、C1-C10的烷基、C1-C10的连有其它取代基团的烷基、C3-C10的芳烷基、C1-C10连有其它取代基团的芳烷基、C3-C7的环烷基、C3-C7连有其它取代基团的环烷基。
R3为氢、C1-C10的烷基、C1-C10的连有其它取代基团的烷基、C3-C10的芳烷基、C1-C10连有其它取代基团的芳烷基、C3-C7的环烷基、C3-C7连有其它取代基团的环烷基。
本发明所述的这种8-芳胺基-3H-咪唑[4,5-g]喹唑啉类化合物的固相合成方法,主要步骤如下:
(2.1)、2-氨基-4-氟苯甲酸与醋酸甲醚反应,生成7-氟喹唑啉-4(3H)-酮;
(2.2)、7-氟喹唑啉-4(3H)-酮硝化,得到6-硝基-7-氟喹唑啉-4(3H)-酮;
(2.3)、6-硝基-7-氟喹唑啉-4(3H)-酮用氯化亚砜氯化,得到4-氯-7-氟-6-硝基喹唑啉;
(2.4)、醛基树脂与含有R1取代基的芳胺反应,得到树脂负载的芳胺;
(2.5)、上述树脂负载的芳胺与按照上述方法制备的的4-氯-7-氟-6-硝基喹唑啉反应,得到树脂负载的4-芳胺基-6-硝基-7-氟喹唑啉:
(2.6)、上述树脂负载的4-芳胺基-6-硝基-7-氟喹唑啉与含有R2取代基的伯胺反应,得到树脂负载的4-芳胺基-6-硝基-7-脂肪胺基喹唑啉;
(2.7)、上述树脂负载的4-芳胺基-6-硝基-7-脂肪胺基喹唑啉在DMF、氯化亚锡、R3取代基的醛共同作用下,生成树脂负载的8-芳胺基-3H-咪唑[4,5-g]喹唑啉;
(2.8)、上述树脂负载的8-芳胺基-3H-咪唑[4,5-g]喹唑啉用三氟乙酸和二氯甲烷配成的混合溶剂处理后,得到从树脂上解离下来的目标产物8-芳胺基-3H-咪唑[4,5-g]喹唑啉。
该固相合成方法进一步具体的步骤如下:
(3.1)、1当量2-氨基-4-氟苯甲酸(I)与1当量醋酸甲醚(II)以乙二醇甲醚为溶剂,加热回流18小时后,得到0.9当量7-氟喹唑啉-4(3H)-酮(III);
(3.2)、取按照上述方法制备的7-氟喹唑啉-4(3H)-酮(III)47.4g用100ml的浓硫酸和100ml的发烟硝酸在100摄氏度硝化,得到33.7g 6-硝基-7-氟喹唑啉-4(3H)-酮(IV);
(3.3)、10当量的6-硝基-7-氟喹唑啉-4(3H)-酮(IV)用40ml氯化亚砜氯化,回流反应3小时,得到9当量的4-氯-7-氟-6-硝基喹唑啉(V);
(3.4)、1当量醛基树脂(VI)与10当量含有相应取代基的芳胺在N,N-二甲基甲酰胺(DMF)溶液中反应,并用氰基硼氢化钠还原,得到1当量树脂负载的芳胺(VII);
(3.5)、此树脂负载的芳胺(VII)与10当量按照上述方法制备的的4-氯-7-氟-6-硝基喹唑啉(V)在四氢呋喃中室温反应24小时,得到1当量树脂负载的4-芳胺基-6-硝基-7-氟喹唑啉(VIII);
(3.6)、此树脂负载的4-芳胺基-6-硝基-7-氟喹唑啉(VIII)在相应的1mol/L的伯胺的二氯甲烷溶液中室温反应24小时,得到1当量树脂负载的4-芳胺基-6-硝基-7-脂肪胺基喹唑啉(IX);
(3.7)、此树脂负载的4-芳胺基-6-硝基-7-脂肪胺基喹唑啉(IX)在2mol/L氯化亚锡的DMF溶液、10当量相应的脂肪醛的作用下,在50摄氏度下反应1小时,一步形成第三个咪唑环,生成0.9当量树脂负载的8-芳胺基-3H-咪唑[4,5-g]喹唑啉(X);
(3.8)、经过三氟乙酸/二氯甲烷=1∶1溶剂处理后,目标产物8-芳胺基-3H-咪唑[4,5-g]喹唑啉(XI)从树脂上切割下来,得到化合物(XI)的粗品,经过常规有机处理之后得到纯化合物(XI)。
本发明所述的结构通式可通过上述步骤制得,下述反应式是制备-芳胺基-3H-咪唑[4,5-g]喹唑啉衍生物(合物XI)的反应通式,反应中间体4-氯-7-氟-6-硝基喹唑啉(V)根据文献(J.Med.Chem.1996,39,918-28)合成。
本发明有益的效果是:本发明提供的8-芳胺基-3H-咪唑[4,5-g]喹唑啉衍生物的合成条件温和,原料易得,纯度和产率均较高。而且可以大量合成具有分子多样性的8-芳胺基-3H-咪唑[4,5-g]喹唑啉衍生物分子库,有利于高通量筛选并发现抗癌药物先导化合物。
具体实施方式:
下面结合实施例对本发明作进一步描述,实施例将帮助更好地理解本发明,但本发明并不仅仅局限于下述实施例。
实施例1:本发明提供的这种8-芳胺基-3H-咪唑[4,5-g]喹唑啉衍生物具有以下结构通式:
其中R1为烷氧基、烷巯基、氢、烷基、C3-C7的环烷基、C1-C10的连有其它取代基团的烷基、氟、氯、溴、碘、氰基,可以在苯环上任意取代位置,可以是多重取代。
R2为氢、C1-C10的烷基、C1-C10的连有其它取代基团的烷基、C3-C10的芳烷基、C1-C10连有其它取代基团的芳烷基、C3-C7的环烷基、C3-C7连有其它取代基团的环烷基。
R3为氢、C1-C10的烷基、C1-C10的连有其它取代基团的烷基、C3-C10的芳烷基、C1-C10连有其它取代基团的芳烷基、C3-C7的环烷基、C3-C7连有其它取代基团的环烷基。
本发明所述的这种8-芳胺基-3H-咪唑[4,5-g]喹唑啉类化合物的固相合成方法,主要步骤如下:
1.1)、7-氟喹唑啉-4(3H)-酮III的制备
6.3g(41mmol)2-氨基-4-氟苯甲酸I和8.5g(82mmol)醋酸乙眯II加入到100ml三颈瓶中,然后加入乙二醇甲醚40ml,体系回流18小时后,常压将溶剂尽可能蒸干,得到残留物,用0.01M的氨水洗涤,最终可以得到6.0g 7-氟喹唑啉-4(3H)-酮III。产率90%。m.p.238℃
1.2)、6-硝基-7-氟喹唑啉-4(3H)-酮IV的制备
取按实例1合成的7-氟喹唑啉-4(3H)-酮III 47.4g(0.29mol)加入250ml的三颈瓶,加入浓硝酸100ml,浓盐酸100ml,并且升温到100℃。反应1小时后,将反应液倒入1.5L的冰水中,得到黄色固体。收集固体并用冰醋酸重结晶后,可以得到6-硝基-7-氟喹唑啉-4(3H)-酮IV的纯品33.7g。产率56%m.p.282-284℃
1.3)、4-氯-6-硝基-7-喹唑啉(V)的制备
取按实例2合成的6-硝基-7-氟喹唑啉-4(3H)-酮IV 10.45g(50mmol),加入250ml三颈瓶,再加入200ml SOCl2,三滴DMF。然后将溶液回流3小时,减压蒸干SOCl2得到4-氯-6-硝基-7-喹唑啉V的粗品10.24g。产率90%。
1.4)、2-丙基-3-异丙基-8-(4-甲基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
将100mg(0.1mmol,载样量1mmol/g)醛基树脂(购自Nova Biochem产品编号:NO:01-64-0331,交联度1%)封入树脂袋,对甲基苯胺0.107g(1mmol),N,N-二甲基甲酰胺10ml,冰醋酸0.1ml,氰基硼氢化钠0.063g(1mmol),加入15ml的反应瓶中,密封后放上摇床,室温振动摇晃24小时,然后倒去反应液,将树脂袋依次用N,N-二甲基甲酰胺、二氯甲烷、乙醇各冲洗三次,在空气中晾干。此时得到类似于VII的结构(R1=CH3)。
取按照实例3所述制备的4-氯-6-硝基-7-喹唑啉V 1.14g(5mmol),四氢呋喃5ml,上步反应后晾干的树脂袋(100mg,0.1mmol),三乙胺0.5ml加入15ml反应瓶,密封后放上摇床,室温振动摇晃24小时,然后倒去反应液,将树脂袋依次用N,N-二甲基甲酰胺、二氯甲烷、乙醇各冲洗三次,在空气中晾干。此时得到类似于VIII的结构(R1=CH3)。
取上步反应后晾干的树脂袋(100mg,0.1mmol),0.86ml(10mmol)异丙胺,二氯甲烷10ml,加入15ml的反应瓶中,密封后放上摇床,室温振动摇晃24小时,然后倒去反应液,将树脂袋依次用N,N-二甲基甲酰胺、二氯甲烷、乙醇各冲洗三次,在空气中晾干。此时得到类似于IX的结构(R1=CH3,R2=异丙基)。
取上步反应后晾干的树脂袋(100mg,0.1mmol),SnCl2·2H2O 4.5g(20mmol),N,N-二甲基甲酰胺10ml,正丁醛0.88ml(10mmol)加入15ml反应管,将体系加热到50℃,并且不断搅拌,反应1小时,然后倒去反应液,将树脂袋依次用N,N-二甲基甲酰胺、二氯甲烷、乙醇各冲洗三次,在空气中晾干。此时得到类似于X的结构(R1=CH3,R2=异丙基,R3=正丙基)。
取上步反应后晾干的树脂袋(100mg,0.1mmol),放入8ml的试管中,再加入三氟乙酸与二氯甲烷体积比为1∶1的混合溶液5ml,将试管封口,1小时候后取出树脂袋,将试管中的溶液常压蒸干后,得到黄色固体。此固体用饱和碳酸氢钠洗涤,并用乙酸乙酯萃取3次。收集有机层并用无水硫酸钠干燥,然后过滤。将得到的乙酸乙酯溶液浓缩,产物经柱层析之后得到黄色固体24.05mg。产率66.9%,纯度(HPLC)91.3%。
1HNMR(500MHz,CDCl3)δ:8.65(1H,s),8.30-8.58(1H,brs),8.39(1H,s),8.05(1H,s),7.57-7.59(2H,m),7.18-7.20(2H,m),4.69-4.73(1H,q,J=6.9Hz),2.86-2.89(2H,t,J=7.6Hz),2.34(3H,s),1.85-1.90(2H,m),1.67-1.68(6H,d,J=6.9Hz),1.03-1.06(3H,t,J=7.3Hz)
13CNMR(500MHz,CDCl3)δ:160.1,158.6,152.6,143.0,138.3,135.6,134.7,129.6,122.6,110.6,110.0,107.3,48.3,30.4,20.998,20.944,14.0
实施例2:2-异丁基-3-丙基-8-(4-甲基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用正丙胺代替异丙胺,异戊醛代替正丁醛,得到白色固体25.62mg。产率68.6%,纯度(HPLC)94.6%。
1HNMR(400MHz,CDCl3+DMSO)δ:9.19(1H,brs),8.71(1H,s),8.61(1H,s),7.77(1H,s),7.69-7.71(2H,m),7.18-7.22(2H,m),4.16-4.20(2H,t,J=7.2Hz),2.81-2.83(2H,d,J=7.1Hz),2.35-2.42(4H,m),1.88-1.93(2H,m),1.08-1.09(6H,d,J=6.6Hz),0.99-1.03(3H,t,J=7.3Hz).
13CNMR(400MHz,CDCl3+DMSO)δ:159.0,158.6,152.5,144.1,141.9,139.5,136.0,133.4,128.8,122.4,111.0,110.8,104.8,45.1,36.0,27.2,22.4,22.2,20.5,10.9
实施例3:2-异丁基3-丙基-8-(4-叔丁基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用对叔丁基苯胺代替对甲基苯胺,正丙胺代替异丙胺,异戊醛代替正丁醛,得到黄色固体26.88mg。产率64.7%,纯度(HPLC)92.1%。
1HNMR(400MHz,CDCl3)δ8.65(1H,s),8.39(1H,s),8.25(1H,brs),7.77(1H,s),7.65-7.67(2H,m),7.40-7.42(2H,m),4.04-4.08(2H,t,J=7.4Hz),2.74-2.76(2H,d,J=7.1Hz),2.31-2.38(1H,m),1.82-1.87(2H,m),1.33(9H,s),1.01-1.02(6H,d,J=6.0Hz),0.958-0.995(3H,t,J=7.4Hz).
13CNMR(400MHz,CDCl3)δ160.0,158.4,152.8,147.6,144.1,142.4,139.9,135.7,125.9,121.9,111.1,109.7,105.6,45.6,36.6,34.4,31.4,27.8,22.8,22.6,11.3
实施例4:2-异丙基-3-(3-甲氧基)丙基-8-(3,4-二甲氧基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用对3,4-二甲氧基苯胺代替对甲基苯胺,3-甲氧基丙胺代替异丙胺,异丁醛代替正丁醛,得到黄色固体34.14mg。产率78.4%,纯度(HPLC)96.2%。
1HNMR(500MHz,CDCl3)δ:8.67(1H,s),8.30(1H,s),7.83(1H,s),7.67-7.85(1H,brs),7.47(1H,s),7.16-7.18(1H,m),6.90-6.92(1H,m),4.32-4.35(2H,t,J=6.9Hz),3.92(3H,s),3.90(3H,s),3.31-3.36(6H,m),2.09-2.14(2H,m),1.48-1.49(6H,d,J=6.6Hz)
13CNMR(500MHz,CDCl3)δ:165.6,158.4,153.2,149.2,146.4,145.1,142.5,140.0,131.9,114.6,111.6,111.1,109.4,107.4,106.2,68.6,58.8,56.2,56.0,40.7,29.6,26.5,21.6
实施例5:2-乙基-3-丙基-8-(4-叔丁基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用对叔丁基苯胺代替对甲基苯胺,正丙胺代替异丙胺,丙醛代替正丁醛,得到黄色固体27.40mg。产率70.7%,纯度(HPLC)91.1%。
1HNMR(500MHz,DMSO)δ:9.83(1H,brs),8.87(1H,s),8.53(1H,s),7.87(1H,s),7.79-7.80(2H,m),7.41-7.42(2H,m),4.25-4.28(2H,t,J=7.2Hz),2.97-3.01(2H,q,J=7.3Hz),1.78-1.82(2H,m),1.39-1.42(3H,t,J=7.4Hz),1.31-1.33(9H,s),0.91-0.94(3H,J=7.3Hz)
13CNMR(500MHz,CDCl3)δ:163.1,161.3,158.6,153.1,147.2,141.4,135.9,125.7,121.8,113.6,111.3,106.2,105.8,45.3,34.3,31.3,22.5,21.0,16.7,11.2
实施例6:2-异丙基-3-正丁基-8-(4-氟)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用对氟苯胺代替对甲基苯胺,正丁胺代替异丙胺,异丁醛代替正丁醛,得到黄色固体6.42mg。产率17.0%,纯度(HPLC)73.5%。
1HNMR(400MHz,CDCl3)δ:8.70(1H,s),8.24(1H,s),7.81(1H,s),7.71-7.74(2H,m),7.58(1H,brs),7.11-7.15(2H,m),4.20-4.24(2H,t,J=7.6Hz),3.25-3.28(1H,m),1.85-1.91(2H,m),1.49-1.51(6H,d,J=6.8Hz),1.43-1.47(2H,m),0.98-1.02(3H,J=7.4Hz)
13CNMR(400MHz,CDCl3)δ:163.6,151.8,144.4,141.2,138.8,123.09,123.03,123.00,114.0,113.9,110.4,104.6,104.5,42.5,30.6,25.5,20.6,19.0,12.7
实施例7:2-异丁基-3-(3-乙氧基)丙基-8-(4-甲氧基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用对甲氧基苯胺代替对甲基苯胺,3-乙氧基丙基代替异丙胺,异戊醛代替正丁醛,得到黄色固体34.51mg。产率79.6%,纯度(HPLC)97.8%。
1HNMR(500MHz,CDCl3)δ:8.66(1H,s),8.32(1H,s),7.93(1H,brs),7.78(1H,s),7.59-7.60(2H,m),6.93-6.95(2H,m),4.30-4.33(2H,t,J=6.8Hz),3.81(3H,s),3.44-3.48(2H,q,J=7.0Hz),3.34-3.37(2H,t,J=5.5Hz),2.81-2.82(2H,d,J=7.2Hz),2.36(1H,m),2.07-2.11(2H,m),1.23-1.26(3H,t,J=7.0Hz),1.02-1.03(6H,d,J=6.2Hz).
13CNMR(500MHz,CDCl3)δ:160.0,158.6,156.8,153.5,145.5,142.4,139.7,131.5,124.4,114.3,111.3,109.4,106.4,66.4,66.3,55.5,40.8,36.2,29.4,27.8,22.6,15.2
实施例8:2-异丙基-3-(3-甲氧基)丙基-8-(4-叔丁基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用对叔丁基苯胺代替对甲基苯胺,3-甲氧基丙基代替异丙胺,异丁醛代替正丁醛,得到黄色固体。(28.66mg产率66.4%纯度(HPLC):90.5%)
1HNMR(500MHz,CDCl3)δ8.70(1H,s),8.28(1H,s),7.82(1H,s),7.67-7.69(3H,m),7.44-7.46(2H,m),4.34-4.36(2H,t,J=7.0Hz),3.31-3.37(6H,m),2.10-2.15(2H,m),1.48-1.50(6H,d,J=6.8Hz),1.35(9H,s).
13CNMR(500MHz,CDCl3)δ165.5,158.2,153.4,147.4,145.6,142.4,139.9,135.9,126.0,121.7,111.4,109.2,106.5,68.6,58.8,40.7,34.4,31.4,29.6,26.5,21.6
实施例9:2-仲丁基-3-(3-乙氧基)丙基-8-(4-甲氧基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用对甲氧基苯胺代替对甲基苯胺,3-乙氧基丙基代替异丙胺,2-甲基丁醛代替正丁醛,得到黄色固体。(31.35mg产率72.3%纯度(HPLC):94.3%)
1HNMR(500MHz,CDCl3)δ8.67(1H,s),8.25(1H,s),7.82(1H,s),7.61-7.63(2H,m),7.59(1H,brs),6.96-6.98(2H,m),4.34-4.38(2H,t,J=7.1Hz),3.83(3H,s),3.45-3.49(2H,q,J=7.0Hz),3.38-3.42(2H,m),3.09-3.14(1H,m),2.10-2.15(2H,m),1.98-2.02(1H,m),1.80-1.84(1H,m),1.46-1.47(3H,d,J=6.8Hz),1.23-1.26(3H,t,J=7.0Hz),0.96-0.99(3H,t,J=7.4Hz)
13CNMR(500MHz,CDCl3)δ164.9,158.5,156.8,153.4,145.5,142.5,139.8,131.5,124.1,114.4,111.2,109.1,106.5,66.5,66.4,55.5,40.8,33.3,29.8,29.1,19.4,15.2,12.0
实施例10:2-丙基-3-环己基-8-苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用苯胺代替对甲基苯胺,环己胺代替异丙胺,得到黄色固体。(23.98mg产率62.2%纯度(HPLC):89.4%)
1HNMR(400MHz,CDCl3)δ8.72(1H,s),8.23(1H,s),8.06(1H,s),7.79-7.81(2H,m),7.65(1H,brs),7.42-7.46(2H,m),7.16-7.20(1H,m),4.22-4.26(1H,m),2.93-2.97(2H,t,J=7.8Hz),2.40-2.44(2H,m),1.95-2.05(4H,m),1.77-1.93(4H,m),1.40-1.51(2H,m),1.10-1.13(3H,t,J=7.6Hz)
13CNMR(400MHz,CDCl3)δ160.1,158.0,153.2,145.0,143.2,138.6,133.4,129.1,124.3,121.7,110.9,109.1,107.0,56.7,30.9,30.6,26.1,25.2,21.1,14.0
实施例11:2-异丙基-3-环己基-8-(4-甲氧基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用对甲氧基苯胺代替对甲基苯胺,环己胺代替异丙胺,异丁醛代替正丁醛得到黄色固体29.67mg。产率71.4%,纯度(HPLC)96.3%。
1HNMR(400MHz,CDCl3)δ:8.68(1H,s),8.29(1H,s),7.89(1H,brs),7.80(1H,s),7.60-7.62(2H,m),6.94-6.97(2H,m),4.24-4.30(1H,m),3.25-3.30(1H,m),1.93-2.07(4H,m),1.73-1.89(4H,m),1.46-1.48(6H,d,J=6.8Hz),1.26-1.42(m,2H)
13CNMR(400MHz,CDCl3)δ:165.0,158.7,157.1,143.1,138.8,131.0,124.3,121.9,114.4,114.2,110.4,109.7,108.3,56.5,55.6,30.8,27.4,26.2,25.0,21.4
实施例12:2-异丙基-3-环己基-8-苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用苯胺代替对甲基苯胺,环己胺代替异丙胺,异丁醛代替正丁醛得到黄色固体27.14mg。产率70.4%,纯度(HPLC)91.8%。
1HNMR(400MHz,CDCl3)δ:8.72(1H,s),8.28(1H,s),8.07(1H,s),7.79-7.81(2H,m),7.66(1H,brs),7.41-7.45(2H,m),7.15-7.19(1H,m),4.29-4.31(1H,m),3.28-3.31(1H,m),1.93-2.04(4H,m),1.64-1.87(4H,m),1.49-1.50(6H,d,J=6.8Hz),1.34-1.46(2H,m).
13CNMR(400MHz,CDCl3)δ:164.8,157.9,153.2,144.9,143.1,138.70,138.65,129.1,124.3,121.6,110.8,109.23,109.18,56.3,30.8,27.3,26.1,25.6,21.5
实施例13:2-异丙基-3-异丙基-8-苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用苯胺代替对甲基苯胺,异丁醛代替正丁醛得到黄色固体23.77mg。产率68.8%,纯度(HPLC)90.2%。
HNMR(400MHz,CDCl3)δ:8.75(1H,s),8.25(1H,s),8.04(1H,s),7.80-7.82(2H,m),7.64(1H,brs),7.42-7.46(2H,m),7.16-7.20(1H,m),4.80-4.84(1H,q,J=6.9Hz),3.26-3.31(1H,q,J=6.8Hz),1.75-1.76(6H,d,J=6.9Hz),1.50-1.52(6H,d,J=6.8Hz)
13CNMR(400MHz,CDCl3)δ:163.6,156.0,153.3,145.7,146.5,138.7,138.3,128.9,125.3,121.5,110.3,108.8,108.3,47.9,29.7,22.7,21.2
实施例14:2-异丙基-3-正丁基-8-(4-甲氧基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用对甲氧基苯胺代替对甲基苯胺,正丁胺代替异丙胺,异丁醛代替正丁醛得到黄色固体28.16mg。产率72.3%,纯度(HPLC)94.3%。
1HNMR(500MHz,CDCl3+DMSO)δ:8.91(1H,brs),8.66(1H,s),8.59(1H,s),7.70-7.73(3H,m),6.95-6.96(2H,m),4.20-4.23(2H,t,J=7.6Hz),3.84(3H,s),3.25-3.28(1H,m),1.85-1.88(2H,m),1.48-1.50(6H,d,J=6.8Hz),1.43-1.46(2H,m),0.98-1.01(3H,d,J=7.4Hz)
13CNMR(500MHz,CDCl3+DMSO)δ:164.2,157.8,156.4,153.0,145.8,141.8,139.4,132.8,124.1,113.7,110.6,108.7,105.3,55.1,43.3,31.3,26.3,21.2,19.8,13.3
实施例15:2-丙基3-(3-甲氧基)丙基-8-(4-叔丁基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用对叔丁基苯胺代替对甲基苯胺,3-甲氧基丙胺代替异丙胺28.44mg。产率65.9%,纯度(HPLC)94.3%。
1HNMR(500MHz,DMSO)δ:9.65(1H,brs),8.85(1H,s),8.49(1H,s),7.80-7.83(3H,m),7.39-7.40(2H,m),4.32-4.35(2H,t,J=6.9Hz),3.30-3.33(2H,t,J=7.2Hz),3.24(3H,s),2.91-2.94(2H,t,J=7.4Hz),1.99-2.03(2H,m),1.88-1.93(2H,m),1.31(9H,s),1.04-1.06(3H,t,J=7.4Hz)
13CNMR(500MHz,DMSO)δ:160.6,158.4,153.4,148.2,145.4,141.5,139.6,136.1,125.7,121.7,111.4,108.9,106.4,68.3,58.6,45.6,34.3,31.3,29.2,26.2,20.2,13.9
实施例16:2-环己基-3-异丙基-8-(4-甲基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用环己醛代替正丁醛27.05mg。产率67.7%,纯度(HPLC):92.1%。
1HNMR(400MHz,CDCl3)δ:8.70(1H,s),8.22(1H,s),8.03(1H,s),7.63-7.65(2H,m),7.42-7.46(1H,brs),7.23-7.25(2H,m),4.76-4.83(1H,m),2.88-2.96(1H,m),2.38(3H,s),1.95-2.06(4H,m),1.81-1.90(4H,m),1.74-1.75(6H,d,J=6.9Hz),1.45-1.51(2H,m).
13CNMR(400MHz,CDCl3)δ:160.2,157.4,154.8,146.2,141.8,138.6,135.4,132.7,128.9,123.1,111.2,109.6,106.6,47.8,37.1,31.8,26.3,21.1,21.0,14.1
实施例17:2-丙基-3-(3-甲氧基)丙基-8-(3,4-二甲氧基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用3,4-二甲氧基苯胺代替对甲基苯胺,3-甲氧基丙胺代替异丙胺32.58mg。产率74.8%,纯度(HPLC)94.3%。
1HNMR(500MHz,DMSO)δ:9.78(1H,brs),8.84(1H,s),8.52(1H,s),7.80(1H,s),7.48-7.51(2H,m),6.97-6.99(1H,m),4.32-4.35(2H,t,J=6.8Hz),3.79(3H,s),3.77(3H,s),3.30-3.32(2H,t,J=5.7Hz),3.24(3H,s),2.91-2.94(2H,t,J=7.4Hz),1.99-2.03(2H,m),1.88-1.92(2H,m),1.03-1.06(3H,t,J=7.3Hz)
13CNMR(500MHz,DMSO)δ:164.4,157.7,152.5,147.2,145.7,149.9,143.0,141.2,131.6,113.8,112.1,111.8,109.4,108.6,105.5,68.3,58.4,56.0,54.9,40.6,29.1,29.0,19.4,13.8
实施例18:2-异丙基-3-丁基-8-(3,4-二甲氧基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用3,4-二甲氧基苯胺代替对甲基苯胺,正丁胺代替异丙胺,异丁醛代替正丁醛30.58mg。产率72.9%,纯度(HPLC)92.3%。
1HNMR(500MHz,CDCl3)δ:8.69(1H,s),8.25(1H,s),7.80(1H,s),7.52(1H,brs),7.48(1H,s),7.14-7.15(1H,m),6.91-6.92(1H,m),4.19-4.22(2H,t,J=7.1Hz),3.93(3H,s),3.90(3H,s),3.80-3.88(1H,m),2.28-2.31(2H,m),1.85-1.88(2H,m),1.49-1.51(6H,d,J=6.7Hz),0.99-1.02(3H,d,J=7.4Hz)
13CNMR(500MHz,CDCl3)δ:165.2,158.4,153.4,149.3,146.4,145.4,142.5,140.0,131.9,114.5,111.6,111.2,109.2,107.4,106.4,56.2,56.0,43.8,31.9,26.8,21.6,20.3,13.7
实施例19:2-异丙基-3-烯丙基-8-(4-甲氧基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用对甲氧基苯胺代替对甲基苯胺,烯丙胺代替异丙胺,异丁醛代替正丁醛28.68mg。产率76.8%,纯度(HPLC)92.5%。
1HNMR(500MHz,DMS0)δ:9.58(1H,brs),8.83(1H,s),8.43(1H,s),7.74-7.79(3H,m),6.94-6.96(2H,m),6.02-6.07(1H,m),5.19-5.21(1H,d,J=10.3Hz),4.98-5.01(2H,m),4.92-4.96(1H,d,J=17.3Hz),3.77,(3H,s),3.29-3.32(1H,m),1.38-1.39(6H,d,J=6.7Hz)
13CNMR(500MHz,DMSO)δ:161.3,157.8,155.6,152.7,145.5,142.1,139.4,135.6,130.3,123.4,114.5,115.1,110.3,108.7,107.2,55.5,46.1,29.3,26.9
实施例20:2-乙基-3-丙基-8-(4-甲氧基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用丙胺代替异丙胺,丙醛代替正丁醛21.97mg。产率63.6%,纯度(HPLC)90.4%。
1HNMR(400MHz,CDCl3+DMSO)δ:10.00(1H,brs),8.87(1H,s),8.64(1H,s),7.96(1H,s),7.65-7.67(2H,m),7.23-7.25(2H,m),4.18-4.21(2H,t,J=7.3Hz),2.96-3.01(2H,q,J=7.5Hz),2.38(3H,s),1.88-1.94(2H,m),1.50-1.54(3H,t,J=7.5Hz),0.99-1.03(3H,t,J=7.4Hz).
13CNMR(400MHz,CDCl3+DMSO)δ:161.3,159.2,150.8,142.3,140.1,139.7,135.0,134.6,128.8,123.1,111.8,109.8,102.2,45.0,30.6,22.2,20.5,10.9,10.8
实施例21:2-异丙基-3-丙基-8-(4-甲氧基)苯胺基-3H-咪唑[4,5-g]喹唑啉的制备
操作过程同实施例1的步骤1.4),只是用对甲氧基苯胺代替苯胺,丙胺代替异丙胺,异丁醛代替正丁醛27.93mg。产率74.4%,纯度(HPLC)94.7%。
1HNMR(400MHz,DMSO)δ:11.24(1H,brs),9.01(1H,s),8.85(1H,s),7.98(1H,s),7.63-7.65(2H,m),7.05-7.07(2H,m),4.32-4.35(2H,t,J=7.2Hz),3.81(s,3H),3.28-3.30(1H,m),1.78-1.84(2H,m),1.38-1.40(6H,d,J=6.8Hz),0.91-0.95(3H,t,J=7.4Hz)
13CNMR(400MHz,DMSO)δ:163.2,157.4,156.3,152.9,146.0,142.1,139.2,132.9,123.7,113.4,110.4,109.1,105.2,55.4,42.8,29.8,26.7,20.7,19.9。
Claims (3)
1、一种8-芳胺基-3H-咪唑[4,5-g]喹唑啉类衍生物,其特征是:所述的8-芳胺基-3H-咪唑[4,5-g]喹唑啉类化合物结构通式为:
其中R1为烷氧基、烷巯基、氢、烷基、C3-C7的环烷基或C1-C10的连有其它取代基团的烷基、氟、氯、溴、碘、氰基;
R2为氢、C1-C10的烷基、C1-C10的连有其它取代基团的烷基、C3-C10的芳烷基、C1-C10连有其它取代基团的芳烷基、C3-C7的环烷基或C3-C7连有其它取代基团的环烷基;
R3为氢、C1-C10的烷基、C1-C10的连有其它取代基团的烷基、C3-C10的芳烷基、C1-C10连有其它取代基团的芳烷基、C3-C7的环烷基或C3-C7连有其它取代基团的环烷基。
2、一种8-芳胺基-3H-咪唑[4,5-g]喹唑啉类化合物的固相合成方法,其特征是:主要步骤如下:
(2.1)、2-氨基-4-氟苯甲酸与醋酸甲醚反应,生成7-氟喹唑啉-4(3H)-酮;
(2.2)、7-氟喹唑啉-4(3H)-酮硝化,得到6-硝基-7-氟喹唑啉-4(3H)-酮;
(2.3)、6-硝基-7-氟喹唑啉-4(3H)-酮用氯化亚砜氯化,得到4-氯-7-氟-6-硝基喹唑啉;
(2.4)、醛基树脂与含有R1取代基的芳胺反应,得到树脂负载的芳胺;
(2.5)、上述树脂负载的芳胺与按照上述方法制备的的4-氯-7-氟-6-硝基喹唑啉反应,得到树脂负载的4-芳胺基-6-硝基-7-氟喹唑啉;
(2.6)、上述树脂负载的4-芳胺基-6-硝基-7-氟喹唑啉与含有R2取代基的伯胺反应,得到树脂负载的4-芳胺基-6-硝基-7-脂肪胺基喹唑啉;
(2.7)、上述树脂负载的4-芳胺基-6-硝基-7-脂肪胺基喹唑啉在DMF、氯化亚锡、R3取代基的醛共同作用下,生成树脂负载的8-芳胺基-3H-咪唑[4,5-g]喹唑啉;
(2.8)、上述树脂负载的8-芳胺基-3H-咪唑[4,5-g]喹唑啉用三氟乙酸和二氯甲烷配成的混合溶剂处理后,得到从树脂上解离下来的目标产物8-芳胺基-3H-咪唑[4,5-g]喹唑啉。
3、根据权利要求2所述的一种8-芳胺基-3H-咪唑[4,5-g]喹唑啉类化合物的固相合成方法,其特征是:主要步骤如下:
(3.1)、1当量2-氨基-4-氟苯甲酸与1当量醋酸甲醚以乙二醇甲醚为溶剂,加热回流18小时后,得到0.9当量7-氟喹唑啉-4(3H)-酮;
(3.2)、取按照上述方法制备的7-氟喹唑啉-4(3H)-酮47.4g用100ml的浓硫酸和100ml的发烟硝酸在100摄氏度硝化,得到33.7g 6-硝基-7-氟喹唑啉-4(3H)-酮;
(3.3)、10当量的6-硝基-7-氟喹唑啉-4(3H)-酮用40ml氯化亚砜氯化,回流反应3小时,得到9当量的4-氯-7-氟-6-硝基喹唑啉;
(3.4)、1当量醛基树脂与10当量含有相应取代基的芳胺在N,N-二甲基甲酰胺(DMF)溶液中反应,并用氰基硼氢化钠还原,得到1当量树脂负载的芳胺;
(3.5)、此树脂负载的芳胺与10当量按照上述方法制备的的4-氯-7-氟-6-硝基喹唑啉在四氢呋喃中室温反应24小时,得到1当量树脂负载的4-芳胺基-6-硝基-7-氟喹唑啉;
(3.6)、此树脂负载的4-芳胺基-6-硝基-7-氟喹唑啉在相应的1mol/L的伯胺的二氯甲烷溶液中室温反应24小时,得到1当量树脂负载的4-芳胺基-6-硝基-7-脂肪胺基喹唑啉;
(3.7)、此树脂负载的4-芳胺基-6-硝基-7-脂肪胺基喹唑啉在2mol/L氯化亚锡的DMF溶液、10当量相应的脂肪醛的作用下,在50摄氏度下反应1小时,生成0.9当量树脂负载的8-芳胺基-3H-咪唑[4,5-g]喹唑啉;
(3.8)、经过三氟乙酸/二氯甲烷=1∶1溶剂处理后,目标产物8-芳胺基-3H-咪唑[4,5-g]喹唑啉从树脂上切割下来,经过常规有机后处理之后得到纯化合物。
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Cited By (3)
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CN101254191B (zh) * | 2008-03-25 | 2010-09-08 | 浙江大学 | 喹唑啉咪唑化合物的用途 |
CN102702115A (zh) * | 2012-05-24 | 2012-10-03 | 盛世泰科生物医药技术(苏州)有限公司 | 一种4-氯-7-氟-6-硝基喹唑啉的合成方法 |
CN107903274A (zh) * | 2017-12-28 | 2018-04-13 | 窦玉玲 | 一种胺类化合物及其在抗肿瘤药物中的应用 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101254191B (zh) * | 2008-03-25 | 2010-09-08 | 浙江大学 | 喹唑啉咪唑化合物的用途 |
CN102702115A (zh) * | 2012-05-24 | 2012-10-03 | 盛世泰科生物医药技术(苏州)有限公司 | 一种4-氯-7-氟-6-硝基喹唑啉的合成方法 |
CN107903274A (zh) * | 2017-12-28 | 2018-04-13 | 窦玉玲 | 一种胺类化合物及其在抗肿瘤药物中的应用 |
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