CN116514712B - 一种3-苄基-2-苯基-4-喹诺酮类化合物的合成方法 - Google Patents

一种3-苄基-2-苯基-4-喹诺酮类化合物的合成方法 Download PDF

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CN116514712B
CN116514712B CN202310492786.2A CN202310492786A CN116514712B CN 116514712 B CN116514712 B CN 116514712B CN 202310492786 A CN202310492786 A CN 202310492786A CN 116514712 B CN116514712 B CN 116514712B
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phenyl
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quinolone
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马豪杰
郭书洋
周风院
郭翠
张玉琦
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Yanan University
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    • C07D215/00Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
    • C07D215/02Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
    • C07D215/16Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
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Abstract

本发明公开了一种3‑苄基‑2‑苯基‑4‑喹诺酮类化合物的合成方法,该方法以邻氨基苯乙酮类化合物和苯甲醛及其衍生物为原料,氢氧化钠为催化剂,二甲基亚砜为溶剂,在100~140℃下反应,得到3‑苄基‑2‑苯基‑4‑喹诺酮类化合物。本发明原料简单易得,避免了底物的制备,无需官能团化,操作简单,一步即可合成,底物适用性好,原子经济,试剂廉价,溶剂绿色无污染,节约成本,反应条件温和,产率高,为3‑苄基‑2‑苯基‑4‑喹诺酮类化合物的合成提供了新的方法,为喹诺酮类药物合成提供了新的策略。

Description

一种3-苄基-2-苯基-4-喹诺酮类化合物的合成方法
技术领域
本发明涉及3-苄基-2-苯基-4-喹诺酮类化合物的合成,具体涉及使用邻氨基苯乙酮类化合物和苯甲醛及其衍生物为原料,在碱的催化作用下,通过羟醛缩合、分子内环化、进一步羟醛缩合合成3-苄基-2-苯基-4-喹诺酮类化合物。
背景技术
4-喹诺酮是由双环结构组成,广泛存在于抗菌药中。喹诺酮类药物是世界上最常用的一类抗菌药物,经过50余年的发展,喹诺酮类药物已被批准用于各种各样的临床适应症,尤其是2-苯基-4-喹诺酮及其衍生物已经被证明是一系列疾病的潜在治疗方法,因为它们在抗病毒、抗血小板、抗疟疾、黄嘌呤氧化酶、组织蛋白酶抑制等方面表现出良好的活性,而且对心脏也有积极的效应。最新研究表明纺锤体驱动蛋白抑制剂可以通过有效的抗有丝分裂抗肿瘤作用有希望用于癌症化疗。最近,发现3-苄基-2-苯基-4-喹诺酮可以有效的抑制纺锤体驱动蛋白。喹诺酮类药物已经被证明是目前临床上最成功的药物。它们代表了天然产物占主导地位的少数合成类别之一。在所有完全合成的抗菌药中,喹诺酮类药物已经被证明是经济和临床上最成功的。
近几年很少有文章报道合成3-苄基-2-苯基-4-喹诺酮,黄国生课题组报道了使用N-(2-乙酰基苯基)吡啶酰胺和苯甲醛为原料合成3-苄基-2-苯基-4-喹诺酮及其衍生物(Chem.Asian J.2016,11,2829–2833),但是该方法需要特殊的原料N-(2-乙酰基苯基)吡啶酰胺,需要制备原料及预官能团化,且需要碳酸氢钾和DBU两种碱,反应条件苛刻;当使用邻氨基苯乙酮和苯甲醛为原料时,产率只有11%,大部分原料剩余,反应效果差,并且使用邻氨基苯乙酮为原料只合成了一个3-苄基-2-苯基-4-喹诺酮化合物,限制了该方法的应用。
发明内容
本发明的目的是提供一种原料廉价易得、操作简单、原子经济、绿色高效、底物适用性好的一步合成3-苄基-2-苯基-4-喹诺酮类化合物的方法,为喹诺酮类药物的合成提供新的策略。
针对上述目的,本发明采用的技术方案是:将化合物1、化合物2、氢氧化钠加入二甲基亚砜中,在100~140℃下反应,得到目标产物3,即3-苄基-2-苯基-4-喹诺酮类化合物,反应式如下所示:
式中,R1代表H、C1~C4烷基、C1~C4烷氧基、卤素中任意一种或两种;R2代表苯基、C1~C4烷基取代苯基、C1~C4烷氧基取代苯基、卤代苯基、三氟甲基取代苯基、甲硫基取代苯基、萘基、苯并[d][1,3]二恶唑基中任意一种。
上述合成方法中,优选氢氧化钠的加入量为化合物1摩尔量的2~6倍。
上述合成方法中,优选化合物1和化合物2的摩尔比为1:2~1:3。
上述合成方法中,进一步优选在100~140℃下反应6~10小时。
本发明的有益效果如下:
本发明以邻氨基苯乙酮类化合物和苯甲醛及其衍生物为原料,氢氧化钠为催化剂,二甲基亚砜为溶剂,绿色高效的合成3-苄基-2-苯基-4-喹诺酮类化合物,具有原料简单易得、避免了底物的制备、无需官能团化、底物适用性好、原子经济、试剂廉价、节约成本、一步即可合成、产率高、反应条件温和、溶剂绿色无污染、操作简单等特点,为3-苄基-2-苯基-4-喹诺酮类化合物的合成提供了新的方法,为喹诺酮类药物合成提供了新的策略。
具体实施方式
下面结合实施例对本发明进一步详细说明,但本发明的保护范围不仅限于以下这些实施例。
实施例1
在10mL的反应管中依次加入27.0mg(0.2mmol)邻氨基苯乙酮、63.6mg(0.6mmol)苯甲醛、32.0mg(0.8mmol)氢氧化钠、1.5mL二甲基亚砜,磁力搅拌,在120℃反应8小时。TLC监测反应完全,等反应液冷却至室温,用乙酸乙酯萃取3次,有机相用饱和食盐水溶液洗涤,再用无水硫酸钠干燥,减压蒸馏浓缩,柱层析分离(洗脱剂为石油醚与乙酸乙酯体积比3:1的混合液),得到目标产物3aa,化学命名为3-苄基-2-苯基-4-喹诺酮,其收率为68%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.78(s,1H),8.14(d,J=8.1Hz,1H),7.65(d,J=3.8Hz,2H),7.55–7.49(m,3H),7.44(dd,J=7.6,2.0Hz,2H),7.33(m,1H),7.13(dd,J=8.1,6.5Hz,2H),7.07(d,J=7.3Hz,1H),6.98–6.92(m,2H),3.74(s,2H);13C NMR(100MHz,DMSO-d6)δ176.19,149.26,141.48,139.58,134.80,131.60,129.54,128.69,128.55,127.93,127.83,125.36,125.09,123.72,123.02,118.33,117.66,31.09.HRMS C22H18NO[M+H]+理论值312.1383,实测值312.1379。
实施例2
本实施例中,用等摩尔量的邻甲基苯甲醛替换实施例1中所用的苯甲醛,其他步骤与实施例1相同,得到目标产物3ab,其收率为55%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.73(s,1H),8.17(d,J=7.9Hz,1H),7.64(m,1H),7.61–7.57(m,1H),7.41–7.29(m,3H),7.27–7.17(m,2H),6.97–6.87(m,3H),6.77(d,J=6.8Hz,1H),3.63(d,J=15.3Hz,1H),3.46(d,J=15.4Hz,1H),1.94(s,3H),1.88(s,3H);13CNMR(100MHz,DMSO-d6)δ176.39,148.91,139.56,139.07,135.84,135.22,134.36,131.43,130.17,129.30,129.18,128.62,127.35,125.76,125.37,125.17,125.08,123.77,122.85,118.15,118.10,27.49,18.91,18.65。
实施例3
本实施例中,用等摩尔量的间甲基苯甲醛替换实施例1中所用的苯甲醛,其他步骤与实施例1相同,得到目标产物3ac,其收率为65%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.67(s,1H),8.14(d,J=8.1Hz,1H),7.63(d,J=3.3Hz,2H),7.40(t,J=7.4Hz,1H),7.37–7.29(m,2H),7.22(d,J=11.3Hz,2H),7.02(t,J=7.5Hz,1H),6.88(d,J=7.4Hz,1H),6.75(d,J=8.9Hz,2H),3.69(s,2H),2.33(s,3H),2.17(s,3H);13C NMR(100MHz,DMSO-d6)δ176.21,149.13,141.62,139.49,137.72,136.66,134.73,131.38,129.93,129.24,128.58,128.31,127.70,125.89,125.65,125.08,124.92,123.73,122.78,118.19,117.77,30.96,20.97,20.84。
实施例4
本实施例中,用等摩尔量的3,4-二甲基苯甲醛替换实施例1中所用的苯甲醛,其他步骤与实施例1相同,得到目标产物3ad,其收率为52%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.61(s,1H),8.11(d,J=8.1Hz,1H),7.62(d,J=3.2Hz,2H),7.33–7.25(m,2H),7.20(d,J=1.9Hz,1H),7.14(d,J=7.7Hz,1H),6.89(d,J=7.6Hz,1H),6.72–6.66(m,2H),3.65(s,2H),2.30(s,3H),2.25(s,3H),2.11(s,3H),2.08(s,3H);13C NMR(100MHz,DMSO-d6)δ176.26,149.11,139.53,139.05,137.78,136.42,135.27,132.74,132.41,131.38,129.71,129.37,129.18,128.99,126.01,125.22,125.10,123.71,122.74,118.20,117.86,30.74,19.42,19.31,19.23,18.89。
实施例5
本实施例中,用等摩尔量的间甲氧基苯甲醛替换实施例1中所用的苯甲醛,其他步骤与实施例1相同,得到目标产物3ae,其收率为57%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.74(s,1H),8.13(d,J=7.8Hz,1H),7.64(d,J=3.8Hz,2H),7.48–7.41(m,1H),7.35–7.29(m,1H),7.12–7.00(m,3H),6.95(s,1H),6.65(dd,J=8.3,2.5Hz,1H),6.58(d,J=7.9Hz,1H),6.51(s,1H),3.72(s,2H),3.69(s,3H),3.63(s,3H);13C NMR(100MHz,DMSO-d6)δ176.36,159.09,159.05,148.98,143.29,139.56,136.04,131.59,129.84,128.96,125.14,123.78,123.01,120.83,120.24,118.35,117.46,115.37,114.14,113.74,110.73,55.17,54.80,31.19。
实施例6
本实施例中,用等摩尔量的对甲氧基苯甲醛替换实施例1中所用的苯甲醛,其他步骤与实施例1相同,得到目标产物3af,其收率为54%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.61(s,1H),8.11(d,J=8.0Hz,1H),7.62(d,J=3.4Hz,2H),7.38(d,J=8.7Hz,2H),7.33–7.27(m,1H),7.07(d,J=8.7Hz,2H),6.89(d,J=8.7Hz,2H),6.71(d,J=8.7Hz,2H),3.82(s,3H),3.68(s,2H),3.66(s,3H);13C NMR(100MHz,DMSO-d6)δ176.30,160.08,157.09,148.83,139.57,133.54,131.40,130.14,128.74,127.14,125.07,123.72,122.77,118.22,118.08,113.88,113.36,55.37,54.90,30.27。
实施例7
本实施例中,用等摩尔量的邻氯苯甲醛替换实施例1中所用的苯甲醛,其他步骤与实施例1相同,得到目标产物3ag,其收率为68%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.99(s,1H),8.16(d,J=6.6Hz,1H),7.71–7.66(m,1H),7.61(d,J=5.5Hz,2H),7.54–7.48(m,1H),7.41–7.34(m,3H),7.28–7.24(m,1H),7.13–7.06(m,2H),7.00(d,J=9.4Hz,1H),3.87(d,J=16.2Hz,1H),3.49(d,J=16.2Hz,1H);13CNMR(100MHz,DMSO-d6)δ176.27,146.90,139.69,137.64,133.15,132.74,132.06,131.86,131.40,130.73,129.66,129.16,128.57,127.38,127.20,126.80,125.16,123.85,123.27,118.31,116.92,28.49。
实施例8
本实施例中,用等摩尔量的间氯苯甲醛替换实施例1中所用的苯甲醛,其他步骤与实施例1相同,得到目标产物3ah,其收率为65%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.85(s,1H),8.15(d,J=6.7Hz,1H),7.70–7.60(m,3H),7.55(t,J=7.8Hz,1H),7.50(s,1H),7.40(d,J=7.6Hz,1H),7.37–7.32(m,1H),7.20–7.10(m,2H),6.98(s,1H),6.89(d,J=7.0Hz,1H),3.72(s,2H);13C NMR(100MHz,DMSO-d6)δ176.19,147.85,143.97,139.52,136.39,133.23,132.64,131.74,130.47,129.77,129.52,128.57,127.70,127.44,126.47,125.46,125.10,123.82,123.17,118.36,117.24,30.75。
实施例9
本实施例中,用等摩尔量的对氯苯甲醛替换实施例1中所用的苯甲醛,其他步骤与实施例1相同,得到目标产物3ai,其收率为77%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.79(s,1H),8.13(d,J=8.0Hz,1H),7.68–7.57(m,4H),7.46(d,J=8.4Hz,2H),7.36–7.30(m,1H),7.19(d,J=8.4Hz,2H),6.98(d,J=8.4Hz,2H),3.70(s,2H);13C NMR(100MHz,DMSO-d6)δ176.18,148.12,140.35,139.55,134.40,133.40,131.70,130.58,129.96,129.62,128.62,127.87,125.09,123.78,123.10,118.30,117.39,30.43。
实施例10
本实施例中,用等摩尔量的邻氟苯甲醛替换实施例1中所用的苯甲醛,其他步骤与实施例1相同,得到目标产物3aj,其收率为51%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.98(s,1H),8.14(d,J=7.4Hz,1H),7.67(t,J=6.9Hz,1H),7.62–7.54(m,2H),7.46(t,J=6.5Hz,1H),7.34(m,3H),7.11(q,J=5.5Hz,1H),7.03–6.93(m,3H),3.68(d,J=41.9Hz,2H);13C NMR(100MHz,DMSO-d6)δ176.09,160.10(d,J=242Hz),158.87(d,J=244Hz),143.82,139.68,132.08(d,J=8Hz),131.85,130.93,129.58(d,J=5Hz),127.34(d,J=2Hz),127.22(d,J=10Hz),125.14,124.69,123.88(d,J=3Hz),123.76,123.24,122.03(d,J=17Hz),118.22,117.55,115.99(d,J=21Hz),114.50(d,J=22Hz),23.77。
实施例11
本实施例中,用等摩尔量的间氟苯甲醛替换实施例1中所用的苯甲醛,其他步骤与实施例1相同,得到目标产物3ak,其收率为66%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.84(s,1H),8.14(d,J=8.1Hz,1H),7.69–7.61(m,2H),7.60–7.53(m,1H),7.43–7.31(m,3H),7.29(d,J=7.6Hz,1H),7.22–7.14(m,1H),6.90(td,J=8.2,2.0Hz,1H),6.80–6.72(m,2H),3.75(s,2H);13C NMR(100MHz,DMSO-d6)δ176.28,162.10(d,J=241Hz),161.83(d,J=243Hz),147.98(d,J=2Hz),144.42(d,J=7Hz),139.57,136.66(d,J=8Hz),131.77,130.81(d,J=9Hz),129.76(d,J=8Hz),125.13,125.03(d,J=3Hz),123.88(d,J=3Hz),123.83,123.19,118.39,117.21,116.49(d,J=21Hz),115.91(d,J=22Hz),114.48(d,J=21Hz),112.22(d,J=21Hz),30.82。
实施例12
本实施例中,用等摩尔量的间溴苯甲醛替换实施例1中所用的苯甲醛,其他步骤与实施例1相同,得到目标产物3al,其收率为66%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.84(s,1H),8.16(d,J=8.1Hz,1H),7.75(d,J=7.4Hz,1H),7.69–7.58(m,3H),7.47(dd,J=14.3,7.1Hz,2H),7.34(t,J=7.3Hz,1H),7.27(d,J=7.1Hz,1H),7.09(d,J=11.8Hz,2H),6.93(d,J=7.6Hz,1H),3.71(s,2H);13C NMR(100MHz,DMSO-d6)δ176.24,147.85,144.28,139.53,136.60,132.46,131.78,131.35,130.71,130.63,130.13,128.39,127.79,126.88,125.14,123.84,123.23,121.72,121.40,118.39,117.35,30.74。
实施例13
本实施例中,用等摩尔量的对三氟甲基苯甲醛替换实施例1中所用的苯甲醛,其他步骤与实施例1相同,得到目标产物3am,其收率为59%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.90(s,1H),8.14(d,J=7.3Hz,1H),7.89(d,J=8.0Hz,2H),7.72–7.65(m,3H),7.62(d,J=7.3Hz,1H),7.48(d,J=8.1Hz,2H),7.38–7.32(m,1H),7.18(d,J=7.9Hz,2H),3.80(s,2H);13C NMR(100MHz,DMSO-d6)δ176.18,148.06,146.17,139.63,138.54,131.89,129.98(q,J=32Hz),129.75,128.53,126.30(q,J=31Hz),125.55(q,J=4Hz),125.13,124.82(q,J=4Hz),124.45(q,J=270Hz),123.98(q,J=271Hz),123.84,123.29,118.37,116.98,31.02。
实施例14
本实施例中,用等摩尔量的对甲硫基苯甲醛替换实施例1中所用的苯甲醛,其他步骤与实施例1相同,得到目标产物3an,其收率为57%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.69(s,1H),8.11(d,J=7.7Hz,1H),7.63(d,J=2.3Hz,2H),7.39(s,4H),7.31(m,1H),7.06(d,J=8.3Hz,2H),6.94(d,J=8.4Hz,2H),3.70(s,2H),2.52(s,3H),2.39(s,3H);13C NMR(100MHz,DMSO-d6)δ176.23,148.65,140.38,139.59,138.42,134.39,131.53,130.96,129.15,128.45,126.12,125.43,125.05,123.72,122.91,118.26,117.46,30.65,15.11,14.40。
实施例15
本实施例中,用等摩尔量的苯并[d][1,3]二氧杂环戊-5-甲醛替换实施例1中所用的苯甲醛,其他步骤与实施例1相同,得到目标产物3ao,其收率为62%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.65(s,1H),8.11(d,J=7.7Hz,1H),7.62(dd,J=3.7,1.4Hz,2H),7.31(m,1H),7.09–7.02(m,2H),6.93(dd,J=8.0,1.8Hz,1H),6.68(d,J=7.9Hz,1H),6.57(d,J=1.7Hz,1H),6.40(d,J=8.3Hz,1H),6.11(s,2H),5.89(s,2H),3.68(s,2H);13C NMR(100MHz,DMSO-d6)δ176.34,148.73,148.14,147.26,146.93,144.91,139.53,135.50,131.52,128.41,125.08,123.76,122.91,122.84,120.50,118.29,117.90,109.25,108.46,108.36,107.78,101.58,100.51,30.85。
实施例16
本实施例中,用等摩尔量的1-萘甲醛替换实施例1中所用的苯甲醛,其他步骤与实施例1相同,得到目标产物3ap,其收率为53%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.99(s,1H),8.25(d,J=8.1Hz,1H),8.03–7.94(m,2H),7.82(d,J=8.4Hz,1H),7.76(d,J=6.7Hz,1H),7.68(m,1H),7.62(d,J=8.2Hz,1H),7.56–7.49(m,3H),7.48–7.35(m,5H),7.31(m,1H),7.12–7.06(m,1H),6.80(d,J=7.1Hz,1H),4.29(d,J=16.0Hz,1H),3.78(d,J=15.9Hz,1H);13C NMR(100MHz,DMSO-d6)δ176.21,148.17,139.79,136.31,133.00,132.94,131.97,131.66,131.39,130.42,129.49,128.29,128.25,127.05,126.71,126.40,125.70,125.53,125.35,125.20,125.14,124.56,124.50,123.89,123.36,123.10,118.35,118.28,28.17。
实施例17
本实施例中,用等摩尔量的1-(2-氨基-5-甲基苯基)乙烷-1-酮替换实施例1中所用的邻氨基苯乙酮,其他步骤与实施例1相同,得到目标产物3ba,其收率为66%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.65(s,1H),7.93(s,1H),7.58–7.49(m,4H),7.47(dd,J=8.6,2.0Hz,1H),7.45–7.40(m,2H),7.13(t,J=7.2Hz,2H),7.07(d,J=7.2Hz,1H),6.94(d,J=6.8Hz,2H),3.73(s,2H),2.42(s,3H);13C NMR(100MHz,DMSO-d6)δ176.00,148.70,141.59,137.66,134.89,132.88,132.04,129.38,128.63,128.45,127.82,127.76,125.23,124.23,123.69,118.18,117.29,31.03,20.78。
实施例18
本实施例中,用等摩尔量的1-(2-氨基-5-甲氧基苯基)乙烷-1-酮替换实施例1中所用的邻氨基苯乙酮,其他步骤与实施例1相同,得到目标产物3ca,其收率为68%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.71(s,1H),7.59(d,J=9.0Hz,1H),7.56–7.48(m,4H),7.42(dd,J=7.7,1.9Hz,2H),7.30(dd,J=9.0,2.9Hz,1H),7.13(t,J=7.3Hz,2H),7.07(d,J=7.2Hz,1H),6.95(d,J=6.8Hz,2H),3.84(s,3H),3.74(s,2H);13C NMR(100MHz,DMSO-d6)δ175.57,155.41,148.27,141.65,134.92,134.29,129.44,128.71,128.51,127.88,127.84,125.29,124.73,122.24,120.09,116.65,104.13,55.32,31.15。
实施例19
本实施例中,用等摩尔量的1-(2-氨基-3-氟苯基)乙烷-1-酮替换实施例1中所用的邻氨基苯乙酮,其他步骤与实施例1相同,得到目标产物3da,其收率为65%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.74(s,1H),7.96(d,J=7.1Hz,1H),7.59–7.45(m,4H),7.41(dd,J=7.9,1.7Hz,2H),7.31(m,1H),7.13(t,J=7.2Hz,2H),7.06(t,J=7.2Hz,1H),6.93(d,J=6.8Hz,2H),3.70(s,2H);13C NMR(100MHz,DMSO-d6)δ175.49,151.61(d,J=248Hz),149.77,141.14,134.30,129.36,128.96(d,J=13Hz),128.93,128.21,127.89,127.81,125.93,125.37,122.56(d,J=7Hz),120.81,118.79,116.24(d,J=17Hz),31.12。
实施例20
本实施例中,用等摩尔量的1-(2-氨基-3-氯苯基)乙烷-1-酮替换实施例1中所用的邻氨基苯乙酮,其他步骤与实施例1相同,得到目标产物3ea,其收率为57%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ10.79(s,1H),8.14(d,J=7.9Hz,1H),7.83(dd,J=7.6,1.5Hz,1H),7.55–7.46(m,3H),7.42(dd,J=7.9,1.6Hz,2H),7.34(t,J=7.9Hz,1H),7.13(t,J=7.2Hz,2H),7.07(d,J=7.2Hz,1H),6.93(d,J=6.8Hz,2H),3.70(s,2H);13C NMR(100MHz,DMSO-d6)δ175.89,150.06,140.98,136.14,134.47,132.00,129.39,128.89,128.25,127.91,127.78,125.41,125.39,124.55,123.37,121.52,118.96,31.14。
实施例21
本实施例中,用等摩尔量的1-(2-氨基-4-氯苯基)乙烷-1-酮替换实施例1中所用的邻氨基苯乙酮,其他步骤与实施例1相同,得到目标产物3fa,其收率为87%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.79(s,1H),8.12(d,J=8.7Hz,1H),7.66(d,J=2.1Hz,1H),7.54(t,J=5.6Hz,3H),7.45(dd,J=7.6,2.1Hz,2H),7.34(dd,J=8.7,2.0Hz,1H),7.13(d,J=7.6Hz,2H),7.07(t,J=7.3Hz,1H),6.95(d,J=6.8Hz,2H),3.72(s,2H);13CNMR(100MHz,DMSO-d6)δ175.75,149.44,141.17,140.24,136.13,134.52,129.67,128.60,127.93,127.78,127.50,125.39,123.29,122.33,118.34,117.30,30.97。
实施例22
本实施例中,用等摩尔量的1-(2-氨基-5-氯苯基)乙烷-1-酮替换实施例1中所用的邻氨基苯乙酮,其他步骤与实施例1相同,得到目标产物3ga,其收率为85%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.93(s,1H),8.07(dd,J=2.0,1.0Hz,1H),7.68(d,J=2.0Hz,2H),7.56–7.51(m,3H),7.45(dd,J=7.8,1.8Hz,2H),7.13(t,J=7.3Hz,2H),7.06(t,J=7.2Hz,1H),6.95(d,J=6.9Hz,2H),3.73(s,2H);13C NMR(100MHz,DMSO-d6)δ175.13,149.47,141.17,138.13,134.52,131.68,129.63,128.63,128.55,127.92,127.78,127.53,125.39,124.68,123.98,120.77,118.08,31.05。
实施例23
本实施例中,用等摩尔量的1-(2-氨基-5-溴苯基)乙烷-1-酮替换实施例1中所用的邻氨基苯乙酮,其他步骤与实施例1相同,得到目标产物3ha,其收率为75%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.92(s,1H),8.21(d,J=2.4Hz,1H),7.80(dd,J=8.9,2.4Hz,1H),7.61(d,J=8.9Hz,1H),7.55–7.50(m,3H),7.45(dd,J=7.7,1.9Hz,2H),7.13(t,J=7.3Hz,2H),7.07(t,J=7.2Hz,1H),6.94(d,J=7.0Hz,2H),3.73(s,2H);13C NMR(100MHz,DMSO-d6)δ175.02,149.52,141.15,138.41,134.51,134.27,129.64,128.63,128.56,127.92,127.78,127.21,125.40,125.12,120.96,118.21,115.52,31.05。
实施例24
本实施例中,用等摩尔量的1-(2-氨基-4-氯-5-甲基苯基)乙烷-1-酮替换实施例1中所用的邻氨基苯乙酮,其他步骤与实施例1相同,得到目标产物3ia,其收率为87%,结构表征数据如下:
1H NMR(400MHz,DMSO-d6)δ11.71(s,1H),8.06(s,1H),7.67(s,1H),7.55–7.50(m,3H),7.43(dd,J=7.8,1.7Hz,2H),7.12(d,J=7.4Hz,2H),7.07(d,J=7.2Hz,1H),6.94(d,J=6.7Hz,2H),3.72(s,2H),2.42(s,3H);13C NMR(100MHz,DMSO-d6)δ175.63,149.19,141.31,138.48,137.02,134.63,130.20,129.60,128.59,128.56,127.89,127.76,127.01,125.34,122.56,117.90,117.78,30.97,19.38。

Claims (2)

1.一种3-苄基-2-苯基-4-喹诺酮类化合物的合成方法,其特征在于:将化合物1、化合物2、氢氧化钠加入二甲基亚砜中,在100~140℃下反应,得到目标产物3,即3-苄基-2-苯基-4-喹诺酮类化合物,反应式如下所示:
式中,R1代表H、C1~C4烷基、C1~C4烷氧基、卤素中任意一种或两种;R2代表苯基、C1~C4烷基取代苯基、C1~C4烷氧基取代苯基、卤代苯基、三氟甲基取代苯基、甲硫基取代苯基、萘基、苯并[d][1,3]二恶唑基中任意一种;
所述氢氧化钠的加入量为化合物1摩尔量的2~6倍;
所述化合物1和化合物2的摩尔比为1:2~1:3。
2.根据权利要求1所述的3-苄基-2-苯基-4-喹诺酮类化合物的合成方法,其特征在于:在100~140℃下反应6~10小时。
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