CN113698328A - 一种取代1,3-二羰基化合物及其制备方法和应用 - Google Patents

一种取代1,3-二羰基化合物及其制备方法和应用 Download PDF

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CN113698328A
CN113698328A CN202110954218.0A CN202110954218A CN113698328A CN 113698328 A CN113698328 A CN 113698328A CN 202110954218 A CN202110954218 A CN 202110954218A CN 113698328 A CN113698328 A CN 113698328A
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管西栋
卢诗超
王蕾
李炳龙
郝立勇
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Shandong First Medical University and Shandong Academy of Medical Sciences
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Abstract

本发明公开了一种取代1,3‑二羰基化合物及其制备方法和应用。所述取代1,3‑二羰基化合物的结构通式为:

Description

一种取代1,3-二羰基化合物及其制备方法和应用
技术领域
本发明涉及一种化合物及其制备方法,尤其涉及一种取代1,3-二羰基化合物及其制备方法和应用。
背景技术
癌症是机体无法控制细胞无限增殖而引起的恶性疾病。在中国,由于吸烟、乙肝感染、人口老龄化以及环境污染等因素,癌症的发病率和致死率均持续增长。随着人类寿命的不断延长,癌症已成为人类的头号杀手。恶性肿瘤病例已经成为世界各国医疗系统不堪承受之重。研究表明,癌症发病率在50岁以上,随年龄大幅上升,随着我国进入老龄化社会,癌症患者数目势必大幅上升。因此,寻找新型高效、低毒抗肿瘤药物成为当务之急。
1,3-二羰基化合物是药物化学中一类重要的化合物,广泛存在于天然产物、药物和生物活性分子中。许多具有1,3-二羰基结构的天然药物具有抗氧化、抗癌、抗菌、抗病毒性能。近年来,由于耐药性问题日益严峻,此类药物的疗效逐年下降,故亟需研发作用新型、高效的 1,3-二羰基类抗肿瘤药物。
发明内容
为了解决上述背景技术中存在的问题,本发明提供了一种取代1,3-二羰基化合物及其制备方法和应用,以解决1,3-二羰基化合物抗肿瘤效果问题。
本发明的第一个目的是提供一种取代1,3-二羰基化合物,其结构通式如下。
Figure BDA0003219799130000011
其中,
R1包括:氢基,甲基,丁基;
苯基,4-氟苯基,3-氟苯基,2-氟苯基,4-氯苯基,2-氯苯基,4-氯-2-氟苯基,4-溴苯基, 2-溴苯基,4-甲基苯基,2,6-二甲基苯基,4-叔丁基苯基,4-甲氧基苯基,2-甲氧基苯基, 2-乙氧基苯基,4-苯氧基苯基,3-溴4-甲氧基苯基,4-氰基苯基,4-三氟甲基苯基,4-萘基,4-苯基乙烯基,2-呋喃基,2-噻吩基,2-吡咯基,环己基,甲基,甲氧基,乙氧基;
R3包括:苯基,4-溴苯基,4-氟苯基,甲基;
R4包括:苯基,4-溴苯基,4-氟苯基。
所述的取代1,3-二羰基化合物具体包括但并不限于以下34个结构的化合物:
Figure BDA0003219799130000021
本发明的第二个目的是提供一种取代1,3-二羰基化合物的制备方法,包括以下步骤:
(1)取代醛与溴代炔在四氢呋喃溶液中,以锌粉和氯化铵溶液为催化剂,室温20-30℃反应生成炔醇类化合物1。
Figure BDA0003219799130000031
(2)炔醇类化合物1溶解在在二氯甲烷中,用戴斯-马丁试剂(DMP)氧化生成炔酮类化合物2。
Figure BDA0003219799130000032
(3)炔酮类化合物2与取代苯砜类通过3,3-sigmatropic重排反应生成取代1,3-二羰基化合物。
Figure BDA0003219799130000033
可选地,步骤(3)中,采用有机酸为催化剂,在有机溶剂中3,3-自由基重排反应,生成化合物3。
可选地,所述有机酸为三氟甲磺酸、乙酸、三氟乙酸或对甲苯磺酸中的一种或多种;
可选地,所述有机溶剂为二氯甲烷、氯仿、乙酸乙酯、1,2-二氯乙烷、乙腈、四氢呋喃或丙酮中的一种或多种;
可选地,所述化合物2和3的摩尔比为1:0.5-2,有机酸为化合物2摩尔数的5%-30%。
本发明的第三个目的是提供一种取代1,3-二羰基化合物的在制备抗肿瘤药物中的应用。
有益效果
本发明具有以下有益效果:
(1)本发明提供的取代1,3-二羰基化合物抗肿瘤活性较高,适用于制备抗肿瘤药物。
(2)本发明提供的取代1,3-二羰基化合物的制备方法:取代醛与溴代炔在四氢呋喃溶液中,以锌粉和氯化铵溶液为催化剂,室温20-30度反应生成炔醇类化合物1;炔醇类化合物1溶解在在二氯甲烷中,用戴斯-马丁试剂(DMP)氧化生成炔酮类化合物2。炔酮类化合物2与取代苯砜类通过迈克尔加成、3,3-sigmatropic重排反应生成取代1,3-二羰基化合物,具有反应原料廉价易得、原子经济、反应高效的特点。
附图说明
为了更清楚地说明本发明的技术方案,下面将对实施例中所需要使用的附图作简单地介绍,显而易见地,对于本领域普通技术人员而言,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本发明提供的化合物3a的1H NMR谱图。
图2为本发明提供的化合物3a的1C NMR谱图。
具体实施方式
本发明提供了一种取代1,3-二羰基化合物及其制备方法和应用,以解决1,3-二羰基化合物类抗肿瘤效果问题。
下面结合具体实施例对本发明作进一步的说明。
实施例1
一种取代1,3-二羰基化合物(化合物3a)——1-苯基-4-(2-(苯硫氧基)苯基)丁烷-1,3-二酮。其结构如下所示:
Figure BDA0003219799130000041
化合物3a的合成路线如下所示
Figure BDA0003219799130000042
化合物3a的具体合成方法包括以下步骤:
(1)4-苯基3-丁炔-1-醇的合成:向单口瓶中加入四氢呋喃(THF)60ml,苯甲醛(5.3g, 0.05mol),溴代丙炔(11.9g,0.1mol)搅拌,控温小于10℃,分批加入锌粉(6.5g,0.1)mol,滴加饱和NH4Cl溶液20ml,20-30℃反应12-24h。反应结束后,抽滤,滤饼用乙酸乙酯洗涤,分液,乙酸乙酯用氯化铵洗涤,无水MgSO4干燥,抽滤,减压浓缩,柱层析纯,[v(石油醚): v(乙酸乙酯)=20:1],得化合物4-苯基3-丁炔-1-醇,,为浅黄色油状物6.04g,产率82.7%。
(2)4-苯基3-丁炔-1-酮的合成:向单口瓶中加入二氯甲烷(DCM)50ml,4-苯基3-丁炔-1- 醇(5g,0.034mol),戴斯-马丁试剂(DMP,28.8g,0.068mol),室温搅拌0.5h,检测反应,反应完毕后加入20ml硫代硫酸钠饱和溶液反应10min,二氯甲烷萃取,有机相合并,无水硫酸镁萃取,有机相浓缩,产物无需纯化,直接用于下一步反应。
(3)1-苯基-4-(2-(苯硫氧基)苯基)丁烷-1,3-二酮的合成:向单口瓶中加入乙酸乙酯(EA)10ml, 4-苯基3-丁炔-1-酮(1.44g,0.01mol),二苯基亚砜(2.02g,0.01mol),三氟甲磺酸0.1ml,室温搅拌6h,检测反应,反应完毕,,加入1mL 2N氢氧化钠溶液,,二氯甲烷萃取(10mL×2),有机相合并,10mL水洗,无水硫酸钠干燥,过滤,滤液减压浓缩,柱层析纯化[v(石油醚): v(乙酸乙酯)=30:1],得化合物1a为浅黄色油状物3.2g,产率92%。
图1为本发明提供的化合物3a的1H NMR谱图。图1中,1H NMR(300MHz,CDCl3)δ15.93(s,1H),7.78–7.70(m,2H),7.53–7.32(m,6H),7.27–7.14(m,6H),6.05(s,1H),3.98(s, 2H)。
图2为本发明提供的化合物3a的1C NMR谱图。图2中,13C NMR(75MHz,CDCl3)δ195.3,181.9,137.6,136.4,134.5,134.4,134.2,132.2,131.3,129.3,129.1,128.6,128.5,128.3, 126.9,126.4,96.5,44.4。
347.1100
HRMS(ESI-TOF):Calculated for C22H19O2S,[M+H]+347.1100,Found 347.1094.
实施例2
一种取代1,3-二羰基化合物(化合物3f’)——1-苯基-4-(2-(苯硫氧基)甲基)丁烷-1,3-二酮。其结构如下所示:
Figure BDA0003219799130000051
化合物3f’的合成路线如下所示:
Figure BDA0003219799130000061
化合物3f'的具体合成方法如下:
(1)4-苯基3-丁炔-1-醇的合成:向单口瓶中加入四氢呋喃(THF)60ml,苯甲醛(5.3g, 0.05mol),溴代丙炔(11.9g,0.1mol)搅拌,控温小于10℃,分批加入锌粉(6.5g,0.1)mol,滴加饱和NH4Cl溶液20ml,20-30℃反应12-24h。反应结束后,抽滤,滤饼用乙酸乙酯洗涤,分液,乙酸乙酯用氯化铵洗涤,无水MgSO4干燥,抽滤,减压浓缩,柱层析纯,[v(石油醚): v(乙酸乙酯)=20:1],得化合物4-苯基3-丁炔-1-醇,,为浅黄色油状物6.04g,产率82.7%。
(2)4-苯基3-丁炔-1-酮的合成:向单口瓶中加入二氯甲烷(DCM)50ml,4-苯基3-丁炔-1- 醇(5g,0.034mol),戴斯-马丁试剂(DMP,28.8g,0.068mol),室温搅拌0.5h,检测反应,反应完毕后加入20ml硫代硫酸钠饱和溶液反应10min,二氯甲烷萃取,有机相合并,无水硫酸镁萃取,有机相浓缩,产物无需纯化,直接用于下一步反应。
(3)1-苯基-4-(2-(苯硫基)甲基)丁烷-1,3-二酮的合成:向单口瓶中加入乙酸乙酯(EA)10ml, 4-苯基3-丁炔-1-酮(1.44g,0.01mol),苯基甲基亚砜(1.27g,0.01mol),三氟甲磺酸0.1ml,室温搅拌3h,检测反应,反应完毕,,加入1mL 2N氢氧化钠溶液,,乙酸乙酯萃取(10mL×3),有机相合并,10mL水洗,无水硫酸钠干燥,过滤,滤液减压浓缩,柱层析纯化[v(石油醚): v(乙酸乙酯)=20:1],得化合物3f’为浅黄色油状物2.56g,产率90%。化合物3f'的H谱测试结果如下:
1H NMR(300MHz,CDCl3)δ16.01(s,1H),7.88–7.83(m,2H),7.57–7.51(m,1H),7.48–7.43(m,2H),7.36–7.31(m,3H),7.26–7.23(m,1H),6.14(s,1H),3.91(s,2H),2.48(s,3H).
化合物3f'的C谱测试结果如下:
13C NMR(101MHz,CDCl3)δ195.4,182.1,138.2,134.6,133.7,132.2,130.6,128.6,128.6, 128.5,128.0,127.0,126.8,125.5,96.3,44.1,16.4.
HRMS(ESI-TOF):Calculated for C17H17O2S,[M+H]+285.0944,Found 285.0940.
3,3-sigmatropic重排反应机理如下:
Figure BDA0003219799130000071
首先炔酮化合物在酸催化下发生同分异构化,发生酮式和烯醇式异构化,变为中间体Ⅱ,中间体Ⅱ在酸性条件,炔基异构化变为连烯结构Ⅲ,Ⅲ与亚砜化合物发生迈克尔加成反应生成中间体Ⅳ,中间体Ⅳ在酸性条件下,发生3,3-迁移,最后得到目标化合物。
实施例3——合成化合物3a的影响因素
鉴于自由基串联式反应是合成目标产物的关键步骤,以化合物3a的合成为例,对影响反应的主要因素:酸和溶剂体系分别进行考察。结果如表1所示。
表1反应影响因素对化合物3a产率的影响
Figure BDA0003219799130000072
Figure BDA0003219799130000081
如表1所示,首先考察了溶剂体系的种类对化合物3a产率的影响:当采用二氯甲烷体系,三氟甲磺酸为催化剂时,产率最高,乙酸乙酯、乙腈等体系中,反应均能进行。而在甲醇中不反应,可能因为甲醇中羟基体系阻碍了反应物异构化,使反应不能进行。当用其余酸代替三氟甲磺酸时,产率明显降低,可能是酸性不足原因。
实施例4
取代1,3-二羰基化合物及抗肿瘤性能
取代1,3-二羰基化合物的包括以下结构式的化合物:
Figure BDA0003219799130000091
上述34个取代1,3-二羰基化合物的抗肿瘤活性数据如下表2所示
表2抗肿瘤活性数据
Figure BDA0003219799130000092
Figure BDA0003219799130000101
Figure BDA0003219799130000111
采用MTT法测定目标化合物对四种肿瘤细胞株的抗增殖活性,数据为三次独立实验的平均值;
采用替尼泊苷和紫杉醇作为阳性对照药。
体外抗肿瘤活性评价
取对数生长期细胞悬浮于含10%胎牛血清的DMEM培养基中,用玻璃滴管轻轻吹打成单细胞悬液,显微镜下血细胞计数板计数活细胞。96孔板每孔接种细胞悬液180μL(细胞浓度为10000个细胞/孔),在37℃、100%相对湿度、含5%CO2的培养箱预培养24小时后,每孔加20μL样品溶液(浓度为20μmol/L、2μmol/L、0.2μmol/L),各组均设3个复孔。连续培养48小时,然后用MTT法测定。每孔加入20μL的MTT溶液(5mg/mL),继续培养4小时后,吸出上清液。每孔加入100μL DMSO,置微量振荡器振荡5min使结晶完全溶解,于酶标仪492nm单波长比色,测定每孔吸光度值,并计算出IC50值。
如表2所示,为34个取代二酮化合物的抗肿瘤活性数据。采用MTT法,以替尼泊苷和紫杉醇作为阳性对照药,选择结肠癌细胞株HCT-116、乳腺癌细胞株MCF7和肺癌细胞株人肝癌细胞HepG2和H1299四种肿瘤细胞株测试了34个化合物的体外抗肿瘤活性。结果显示即化合物3e’和3f’具有较好的的体外抗肿瘤活性。构效关系表明:母体结构1,3-二羰基,两端取代基越少抗肿瘤效果越好,如3e’和3f’,而在3-位羰基引入芳基取代基后,1-位羰基引入结构较小的非芳基集团后,活性稍微降低,如化合物3z,3a’和3f’;而在1-位羰基引入芳环取代基后活性明显降低。苯环甲基取代或位卤素(1n和1q)取代的化合物保留一定的抗肿瘤活性;苯环上引入的脂溶性基团体积越大,活性降低越明显(如3p,3t和3u);若在苯环上引入强吸电基团(3r,3s)或将苯环替换为芳杂环(3v-3y)均导致活性降低甚至完全丧失。

Claims (9)

1.一种取代1,3-二羰基化合物,其特征在于,其结构通式如下所示:
Figure FDA0003219799120000011
其中,
R1包括:氢基,甲基,丁基;
R2包括:苯基,4-氟苯基,3-氟苯基,2-氟苯基,4-氯苯基,2-氯苯基,4-氯-2-氟苯基,4-溴苯基,2-溴苯基,4-甲基苯基,2,6-二甲基苯基,4-叔丁基苯基,4-甲氧基苯基,2-甲氧基苯基,2-乙氧基苯基,4-苯氧基苯基,3-溴4-甲氧基苯基,4-氰基苯基,4-三氟甲基苯基,4-萘基,4-苯基乙烯基,2-呋喃基,2-噻吩基,2-吡咯基,环己基,甲基,甲氧基,乙氧基;
R3包括:苯基,4-溴苯基,4-氟苯基,甲基;
R4包括:苯基,4-溴苯基,4-氟苯基。
2.一种如权利要求1所述的取代1,3-二羰基化合物的制备方法,其特征在于,
包括以下步骤:
(1)取代醛与溴代炔反应生成炔醇类化合物1
Figure FDA0003219799120000012
(2)步骤1所得的炔醇类化合物1氧化生成炔酮类化合物2
Figure FDA0003219799120000013
(3)步骤2所得的炔酮类化合物2与取代苯砜类通过3,3-sigmatropic重排反应生成芳基取代1,3-二羰基化合物
Figure FDA0003219799120000021
3.根据权利要求2所述的制备方法,其特征在于,步骤(1)中,取代醛与溴代炔在四氢呋喃溶液中,以锌粉和氯化铵溶液为催化剂,室温20-30度反应生成炔醇类化合物1。
4.根据权利要求3所述的制备方法,其特征在于,步骤(2)中,步骤1所得的炔醇类化合物1溶解在在二氯甲烷中,用戴斯-马丁试剂(DMP)氧化生成炔酮类化合物2。
5.根据权利要求3所述的制备方法,其特征在于,步骤(3)中,采用有机酸为催化剂,在有机溶剂中3,3-自由基重排反应,生成化合物3。
6.根据权利要求5所述的制备方法,其特征在于,所述有机酸为三氟甲磺酸、乙酸、三氟乙酸或对甲苯磺酸中的一种或多种。
7.根据权利要求5所述的制备方法,其特征在于,所述有溶剂为二氯甲烷、氯仿、乙酸乙酯、1,2-二氯乙烷、乙腈、四氢呋喃或丙酮中的一种或多种。
8.根据权利要求5所述的制备方法,其特征在于,所述化合物2和化合物3的摩尔比为1:0.5-2,有机酸为化合物2摩尔数的5%-30%。
9.一种如权利要求1所述的取代1,3-二羰基化合物在制备抗肿瘤药物中的应用。
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JPH02229168A (ja) * 1989-03-01 1990-09-11 Takeda Chem Ind Ltd ピラゾロン誘導体
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JPH02229168A (ja) * 1989-03-01 1990-09-11 Takeda Chem Ind Ltd ピラゾロン誘導体
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