CN115536644B - 一种色酮-2-甲酰胺类化合物用于制备降血糖药物的用途及其制备方法 - Google Patents
一种色酮-2-甲酰胺类化合物用于制备降血糖药物的用途及其制备方法 Download PDFInfo
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Classifications
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- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/12—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
- A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
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- Chemical & Material Sciences (AREA)
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- Bioinformatics & Cheminformatics (AREA)
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Abstract
本发明公开了一种色酮‑2‑甲酰胺类化合物用于制备降血糖药物的用途,该色酮‑2‑甲酰胺类化合物为以下任意一种:7‑甲氧基‑4‑氧代‑N‑(吡啶‑3‑基)‑4H‑色烯‑2‑甲酰胺、6‑甲氧基‑4‑氧代‑N‑(吡啶‑3‑基)‑4H‑色烯‑2‑甲酰胺、6‑氟‑4‑氧代‑N‑(吡啶‑3‑基)‑4H‑色烯‑2‑甲酰胺、6‑溴‑4‑氧代‑N‑(吡啶‑3‑基)‑4H‑色烯‑2‑甲酰胺。本发明还公开了该色酮‑2‑甲酰胺类化合物的制备方法。本发明的化合物具有较好的降糖作用,同时能够避免不良副作用,有望代替现有技术中PPARγ全激动剂,提高用药安全性。
Description
技术领域
本发明属于药用化合物技术领域,具体涉及一种色酮-2-甲酰胺类化合物用于制备降血糖药物的用途及其制备方法。
背景技术
糖尿病是严重威胁人类健康的慢性非传染性疾病之一,它是一种以胰岛素分泌及(或)作用缺陷引起的以血糖升高为特征的代谢病,主要可分为非胰岛素依赖型糖尿病(NIDDM,1型糖尿病)、胰岛素依赖型糖尿病(IDDM,2型糖尿病)、妊娠期糖尿病和其他型糖尿病四种类型。2型糖尿病是所有患者糖尿病的主要类型,占世界糖尿病确诊病例的90~95%。根据最新流行病学数据调查,国际糖尿病联合会(IDF)的数据,2021年,全球有5.366亿(确诊或未确证)糖尿病患者,估计到2045年,这一数字预计将增加到7.832亿。根据《中国2型糖尿病预防指南(2017年版)》,2013年中国18岁以上糖尿病患病率为10.4%,其中18~40岁人群糖尿病患病率为5.4%,60岁以上老年人糖尿病患病率高22.86%。
2型糖尿病其特征是胰岛素和(或)胰岛素抵抗的缺乏导致高血糖水平。导致胰岛素抵抗和胰岛素缺乏的主要因素包括衰老、遗传缺陷、环境因素和久坐不动的生活方式导致的高热量摄入。如果处理不当,2型糖尿病可导致肾病、神经病变、视网膜病变,并增加心肌梗死的风险。目前批准用于治疗2型糖尿病的口服药物包括一系列双胍类、二肽基肽酶(DPP-4)抑制剂和钠-葡萄糖共转运体(SGLT2)抑制剂。尽管现有药物种类繁多,但是都以控制血糖、延缓相关并发症为主,并不能彻底治愈糖尿病。
过氧化物酶体增殖物激活受体(peroxisome proliferater-activatedreceptor,PPAR)是一类配体激活的核转录因子,属于核受体超家族成员。PPAR包括PPAR-α、PPAR-β/δ和PPAR-γ三种亚型,其中以PPAR-γ的研究最为深入。过氧化物酶体增殖物激活受体γ(PPAR-γ)调节多种基因的转录,涉及脂质、糖代谢、炎症和细胞增殖。这些功能与2型糖尿病、肥胖和免疫紊乱的发病相关,这使得PPAR-γ成为药物开发的一个有希望的靶标。PPARγ的大部分分子功能,是由其配体分子调控的,包括内源性配体,全激动剂,部分激动剂,拮抗剂,反向激动剂和磷酸化抑制剂。
噻唑烷二酮(TZDs)是PPARγ配体,临床上用于2型糖尿病治疗的噻唑烷二酮(TZD),如曲格列酮(troglitazone)、罗格列酮(rosiglitazone)、吡格列酮(pioglitazone)作为PPARγ全激动剂,诱导PPARγ强反式激活,减少肝脏的葡萄糖的输出,增加外周的摄取,增强内源性胰岛素的有效性,减少维持一定血糖水平所需的外源性胰岛素的量,进而提高糖尿病患者胰岛素的敏感性,发挥抗高血糖活性。第一个噻唑烷二酮,曲格列酮,在1997年被美国食品药品监督管理局(FDA)批准上市,但在2000年由于肝毒性问题被撤出市场。1999年,GSK公司罗格列酮、武田公司的吡格列酮先后经美国食品药品监督管理局(FDA)批准上市。这类药物临床上不但能降低血糖、改善胰岛素抵抗,而且能降低甘油三酯(TG),提高高密度脂蛋白(HDL)的水平。但不幸的是,相当数量的病人由于服用这类药出现充血性心衰、肝转氨酶升高,液体潴留、体重增加、骨质疏松等和膀胱癌等不良反应。使这类具有非常强的抗糖尿病药物,由于安全性问题而受到限制。
研究表明TZDs发挥胰岛素增敏作用并不需要完全激动PPARγ,相反对PPARγ激动能力较弱的PPARγ部分激动剂在保留胰岛素增敏,发挥治疗作用的同时,具有更好的安全性,显示出良好的应用前景。因此,保留PPARγ激动剂良好的降糖作用,同时避免其不良副作用是开发新型和更安全的PPARγ抗糖尿病化合物的新的方向。
发明内容
针对上述问题,本发明提供一种用于制备降血糖药物的色酮-2-甲酰胺类化合物及其制备方法和用途,该化合物具有较好的降糖作用,同时能够避免不良副作用,有望代替现有技术中PPARγ全激动剂,提高用药安全性。
为了解决以上技术问题,本发明采用以下技术方案:
本发明提供一种色酮-2-甲酰胺类化合物用于制备降血糖药物的用途。
进一步,所述的色酮-2-甲酰胺类化合物,为以下任意一种:
7-甲氧基-4-氧代-N-(吡啶-3-基)-4H-色烯-2-甲酰胺,结构式为:
6-甲氧基-4-氧代-N-(吡啶-3-基)-4H-色烯-2-甲酰胺,结构式为:
6-氟-4-氧代-N-(吡啶-3-基)-4H-色烯-2-甲酰胺,结构式为:
6-溴-4-氧代-N-(吡啶-3-基)-4H-色烯-2-甲酰胺,结构式为:
本发明还提供一种用于上述用途的色酮-2-甲酰胺类化合物的制备方法,包括以下步骤:
S1:将4/5-甲氧基/氟/溴-2-羟基苯乙酮、草酸二乙酯、乙醇钠溶液混合,在氮气保护下回流,反应结束后,蒸干溶剂,得到的固体物,然后经二氯甲烷萃取、冰乙酸洗涤、饱和食盐水洗涤、无水硫酸镁干燥、抽滤、浓缩,得第一产物;
S2:将第一产物与加入冰乙酸、浓硫酸混合,回流,反应结束后,冷却至室温;加入蒸馏水,4℃冰箱静置一夜;取出抽滤后,烘箱放置一夜,取出抽滤,得到第二产物;
S3:第二产物中加入冰乙酸、盐酸混合液,回流,反应结束后,冷却至室温;加入蒸馏水,4℃冰箱静置一夜;取出抽滤后,真空干燥箱放置一夜,得到色酮-2-甲酸产品;
S4:将色酮-2-甲酸产品、1-羟基苯并三唑、1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐、N,N-二甲基甲酰胺、三乙胺混合,冰水浴搅拌,然后加入3-氨基吡啶,在氮气保护下反应;
S5:反应结束后,依次进行二氯甲烷萃取、冰乙酸洗涤、饱和食盐水洗涤、无水硫酸镁干燥、抽滤、浓缩、真空干燥;加入硅胶粉搅拌,加入乙酸乙酯旋蒸,色谱分离,得到目标产物。
进一步,步骤S1中,乙醇钠溶液浓度为20%。
进一步,步骤S1中,回流温度为90℃,时间为4小时。
进一步,步骤S2、S3中回流温度为100℃,时间为6小时。
进一步,洗涤用冰乙酸浓度为10%。
进一步,步骤S2中,冰乙酸、浓硫酸体积比为100:1。
进一步,步骤S3冰乙酸、盐酸体积比为2:1,盐酸浓度为6mol/L。
进一步,步骤S4中,冰浴搅拌20分钟;室温搅拌12小时。
本发明具有以下有益效果:
本发明创新性地合成了一种新型色酮-2-甲酰胺衍生物,并检测其降糖作用,证明其具有较好的降糖作用。
本发明巧妙的设计了色酮-2-甲酰胺类化合物的制备方法,先制备带有目标取代基的色酮-2-甲酸产品,再以色酮-2-甲酸产品、3-氨基吡啶为反应物,以1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐为缩合剂,N,N-二甲基甲酰胺为溶剂,三乙胺为缚酸剂,搭配使用1-羟基苯并三唑防止副反应的发生,能够使得反应顺利进行。
本发明制备获得的化合物具有较好的降糖作用,同时能够避免不良副作用,有望代替现有技术中PPARγ全激动剂,提高安全性。本发明为新型色酮-2-甲酰胺衍生物的研发提供试验依据和理论基础,并本发明为从小分子药物中开发降糖药物提供新药源,同时为开发出新的具有糖尿病的产品奠定了基础。
具体实施方式
为便于更好地理解本发明,通过以下实施例加以说明,这些实例属于本发明的保护范围,但不限制本发明的保护范围。
实施例1 7-甲氧基-4-氧代-N-(吡啶-3-基)-4H-色烯-2-甲酰胺
其合成路线如下:
其制备方法包括以下步骤:
S1:称取4-甲氧基-2-羟基苯乙酮(4985.1mg,30mmol),草酸二乙酯(21921mg,150mmol),20%乙醇钠(40830mg,120mmol)于150mL圆底烧瓶中,90℃回流4小时,反应结束后,冷却至室温,旋蒸干溶剂,得到的固体用二氯甲烷溶解,用10%冰乙酸洗涤3次,饱和食盐水洗涤2次,萃取分液后用5g无水硫酸镁干燥,抽滤后旋蒸浓缩得第一步产物;
S2:将第一步的产物与冰乙酸30mL,浓硫酸0.3mL,加入到150mL圆底烧瓶中,100℃回流6小时,反应结束后,冷却至室温。加入适量蒸馏水,4℃冰箱静置一夜,抽滤后有大量固体,真空干燥箱放置一夜,抽滤后得到第二步产物;
S3:将第二步产物、冰乙酸30mL、6mol/L盐酸15mL加入到圆底烧瓶中,100℃回流6小时;反应结束后,冷却至室温;加入适量蒸馏水,4℃冰箱静置一夜,抽滤后有大量固体,真空干燥放置一夜,得到7-甲氧基-4-氧代-4H-色烯-2-羧酸;
S4:称取7-甲氧基-4-氧代-4H-色烯-2-羧酸(660.54mg,3mmol),1-羟基苯并三唑(445.929mg,3.3mmol),1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐(632.61mg,3.3mmol),N,N-二甲基甲酰胺(10mL),三乙胺(1mL),加入到100mL圆底烧瓶中,冰水浴搅拌20分钟,然后加入3-氨基吡啶(329.385mg,3.5mmol),氮气保护,室温搅拌12小时;
S5:反应结束后,加入100mL二氯甲烷,用10%冰乙酸洗涤3次,饱和食盐水洗涤2次,无水硫酸镁干燥;抽滤后旋蒸浓缩;真空干燥后加入5g硅胶粉,加入乙酸乙酯旋蒸,通过柱色谱分离,得到目标产物,简称D1。
产品D1为淡黄色粉末固体,产率54%,核磁1HNMR(400MHz,DMSO-d6)δ10.90(s,1H),8.96(d,J=2.6Hz,1H),8.41(dd,J=4.8,1.5Hz,1H),8.21(ddd,J=8.3,2.6,1.5Hz,1H),7.99(d,J=8.9Hz,1H),7.48(dd,J=8.3,4.7Hz,1H),7.29(d,J=2.4Hz,1H),7.15(dd,J=8.8,2.4Hz,1H),6.94(s,1H),3.95(s,3H).
13C NMR(101MHz,DMSO-d6)δ176.81,164.87,158.75,157.50,155.33,146.26,143.09,134.79,128.75,126.94,124.21,118.07,116.02,111.92,101.49,56.68.
实施例2 6-甲氧基-4-氧代-N-(吡啶-3-基)-4H-色烯-2-甲酰胺
其合成路线如下:
其制备方法包括以下步骤:
S1:称取5-甲氧基-2-羟基苯乙酮(4985.1mg,30mmol),草酸二乙酯(21921mg,150mmol),20%乙醇钠(40830mg,120mmol)于150mL圆底烧瓶中,90℃回流4小时,反应结束后,冷却至室温,旋蒸干溶剂,得到的固体用二氯甲烷溶解,用10%冰乙酸洗涤3次,饱和食盐水洗涤2次,萃取分液后用5g无水硫酸镁干燥,抽滤后旋蒸浓缩得第一步产物;
S2:将第一步的产物与冰乙酸30mL,浓硫酸0.3mL,加入到150mL圆底烧瓶中,100℃回流6小时,反应结束后,冷却至室温。加入适量蒸馏水,4℃冰箱静置一夜,抽滤后有大量固体,真空干燥箱放置一夜,抽滤后得到第二步产物;
S3:将第二步产物,冰乙酸30mL、6mol/L盐酸15mL加入到圆底烧瓶中,100℃回流6小时;反应结束后,冷却至室温;加入适量蒸馏水,4℃冰箱静置一夜,抽滤后有大量固体,真空干燥放置一夜,得到6-甲氧基-4-氧代-4H-色烯-2-羧酸;
S4:称取6-甲氧基-4-氧代-4H-色烯-2-羧酸(660.54mg,3mmol),1-羟基苯并三唑(445.929mg,3.3mmol),1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐(632.61mg,3.3mmol),N,N-二甲基甲酰胺(10mL)三乙胺(1mL),加入到100mL圆底烧瓶中,冰水浴搅拌20分钟,然后加入3-氨基吡啶(329.385mg 3.5mmol),氮气保护,室温搅拌12小时;
S5:反应结束后,加入100mL二氯甲烷,用10%冰乙酸洗涤3次,饱和食盐水洗涤2次,无水硫酸镁干燥。抽滤后旋蒸浓缩。真空干燥后加入5g硅胶粉,加入乙酸乙酯旋蒸,通过柱色谱分离,得到目标产物,简称D2。
产品D2为白色粉末固体,产率58%,核磁1H NMR(400MHz,DMSO-d6)δ10.94(s,1H),8.96(dd,J=2.6,0.7Hz,1H),8.41(dd,J=4.7,1.5Hz,1H),8.20(ddd,J=8.4,2.6,1.5Hz,1H),7.80(d,J=9.2Hz,1H),7.55(dd,J=9.2,3.2Hz,1H),7.51–7.42(m,2H),6.98(s,1H),3.89(s,3H).
13C NMR(101MHz,DMSO-d6)δ177.44,158.80,157.56,155.44,150.29,146.26,143.10,134.81,128.76,125.00,124.84,124.20,121.07,110.87,105.14,56.32.
实施例3 6-氟-4-氧代-N-(吡啶-3-基)-4H-色烯-2-甲酰胺
其合成路线如下:
其制备方法包括以下步骤:
S1:称取5-氟-2-羟基苯乙酮(4624.2mg,30mmol),草酸二乙酯(21921mg,150mmol),20%乙醇钠(40830mg,120mmol)于150mL圆底烧瓶中,90℃回流4小时,反应结束后,冷却至室温,旋蒸干溶剂,得到的固体用二氯甲烷溶解,用10%冰乙酸洗涤3次,饱和食盐水洗涤2次,萃取分液后用5g无水硫酸镁干燥,抽滤后旋蒸浓缩得第一步产物;
S2:将第一步的产物与冰乙酸30mL,浓硫酸0.3mL,加入到150mL圆底烧瓶中,100℃回流6小时,反应结束后,冷却至室温。加入适量蒸馏水,4℃冰箱静置一夜,抽滤后有大量固体,真空干燥箱放置一夜,抽滤后得到第二步产物;
S3:将第二步产物,冰乙酸30mL 6mol/L盐酸15mL加入到圆底烧瓶中,100℃回流6小时;反应结束后,冷却至室温;加入适量蒸馏水,4℃冰箱静置一夜,抽滤后有大量固体,真空干燥放置一夜,得到6-氟-4-氧代-4H-色烯-2-羧酸;
S4:称取6-氟-4-氧代-4H-色烯-2-羧酸(624.42mg,3mmol),1-羟基苯并三唑(445.929mg,3.3mmol),1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐(632.61mg,3.3mmol),N,N-二甲基甲酰胺(10mL),三乙胺(1mL),加入到100mL圆底烧瓶中,冰水浴搅拌20分钟,然后加入3-氨基吡啶(329.385mg 3.5mmol),氮气保护,室温搅拌12小时;
S5:反应结束后,加入100mL二氯甲烷,用10%冰乙酸洗涤3次,饱和食盐水洗涤2次,无水硫酸镁干燥。抽滤后旋蒸浓缩。真空干燥后加入5g硅胶粉,加入乙酸乙酯旋蒸,通过柱色谱分离,得到目标产物,简称D3。
产品D3为淡黄色粉末固体,产率52%,核磁1HNMR(400MHz,DMSO-d6)δ10.97(s,1H),8.96(d,J=2.5Hz,1H),8.42(dd,J=4.7,1.5Hz,1H),8.20(ddd,J=8.3,2.6,1.5Hz,1H),7.93(dd,J=9.2,4.4Hz,1H),7.85(ddd,J=9.2,8.0,3.2Hz,1H),7.78(dd,J=8.3,3.1Hz,1H),7.48(dd,J=8.3,4.7Hz,1H),7.02(s,1H).
13C NMR(101MHz,DMSO-d6)δ177.19,158.59,155.92,152.06,146.34,143.10,134.75,128.79,125.46,125.39,124.23,123.95,123.70,122.33,122.25,111.01,110.29,110.05.
实施例4 6-溴-4-氧代-N-(吡啶-3-基)-4H-色烯-2-甲酰胺
其合成路线如下:
其制备方法包括以下步骤:
S1:5-溴-2-羟基苯乙酮(6151.2mg,30mmol),草酸二乙酯(21921mg,150mmol),20%乙醇钠(40830mg,120mmol)于150mL圆底烧瓶中,90℃回流4小时,反应结束后,冷却至室温,旋蒸干溶剂,得到的固体用二氯甲烷溶解,用10%冰乙酸洗涤3次,饱和食盐水洗涤2次,萃取分液后用5g无水硫酸镁干燥,抽滤后旋蒸浓缩得第一步产物;
S2:将第一步的产物与冰乙酸30mL,浓硫酸0.3mL,加入到150mL圆底烧瓶中,100℃回流6小时,反应结束后,冷却至室温。加入适量蒸馏水,4℃冰箱静置一夜,抽滤后有大量固体,真空干燥箱放置一夜,抽滤后得到第二步产物;
S3:将第二步产物,冰乙酸30mL 6mol/L盐酸15mL加入到圆底烧瓶中,100℃回流6小时;反应结束后,冷却至室温;加入适量蒸馏水,4℃冰箱静置一夜,抽滤后有大量固体,真空干燥放置一夜,得到6-溴-4-氧代-4H-色烯-2-羧酸;
S4:称取6-溴-4-氧代-4H-色烯-2-羧酸(807.15mg,3mmol),1-羟基苯并三唑(445.929mg,3.3mmol),1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐(632.61mg,3.3mmol),N,N-二甲基甲酰胺(10mL),三乙胺(1mL),加入到100mL圆底烧瓶中,冰水浴搅拌20分钟,然后加入3-氨基吡啶(329.385mg,3.5mmol),氮气保护,室温搅拌12小时;
S5:反应结束后,加入100mL二氯甲烷,用10%冰乙酸洗涤3次,饱和食盐水洗涤2次,无水硫酸镁干燥;抽滤后旋蒸浓缩;真空干燥后加入5g硅胶粉,加入乙酸乙酯旋蒸,通过柱色谱分离,得到目标产物,简称D4。
产品D4为淡黄色粉末固体,产率55%,核磁1HNMR(400MHz,DMSO-d6)δ10.95(s,1H),8.96(d,J=2.5Hz,1H),8.41(dd,J=4.7,1.5Hz,1H),8.19(ddd,J=8.3,2.5,1.5Hz,1H),8.14(d,J=2.5Hz,1H),8.10(dd,J=8.9,2.5Hz,1H),7.81(d,J=8.9Hz,1H),7.47(dd,J=8.3,4.7Hz,1H),7.03(s,1H).13C NMR(101MHz,DMSO-d6)δ176.57,158.44,155.83,154.55,146.32,143.07,138.26,134.72,128.74,127.56,125.65,124.21,122.08,119.11,111.81。
降血糖效果实验
以下生物学测试实例描述解释本发明。
1.本发明中化合物的降糖活性可以通过使用如下所述的测定系统测定:
取SPF级雄性昆明小鼠12只,体重28-31g,自由摄食饮水,给予普通营养饲料,并置于恒温恒湿(温度:21~25℃,湿度45%~65%),12小时交替循环光照的条件下饲养,适应性饲养一周。实验前随机分为4组,每组3只,禁食12小时,保持自由饮水。在禁食第12小时皮下注射给药,给药方案见表1。
表1给药方案
分组 | mg/kg |
空白 | 0 |
D1 | 130 |
D2 | 130 |
D3 | 130 |
D4 | 130 |
在给药第14小时后尾静脉取血,通过三诺血糖仪检测小鼠血糖变化,并按下列公式分别计算不同化合物给药对小鼠血糖的影响:
降糖率(%)=(Glu给药组-Glu模型组)/(Glu模型组-11.1)
2.结果如表2所示。
表2降血糖效果
由上表可知,本发明的色酮-2-甲酰胺类化合物具有较好的降血糖的作用;经过后期观察,注射本发明色酮-2-甲酰胺类化合物的小鼠未出现充血性心衰、肝转氨酶升高,液体潴留、体重增加、骨质疏松等和膀胱癌等不良反应。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (7)
1.一种色酮-2-甲酰胺类化合物用于制备降血糖药物的用途,其特征在于,所述色酮-2-甲酰胺类化合物为以下任意一种:
7-甲氧基-4-氧代-N-(吡啶-3-基)-4H-色烯-2-甲酰胺,结构式为:
6-甲氧基-4-氧代-N-(吡啶-3-基)-4H-色烯-2-甲酰胺,结构式为:
6-氟-4-氧代-N-(吡啶-3-基)-4H-色烯-2-甲酰胺,结构式为:
6-溴-4-氧代-N-(吡啶-3-基)-4H-色烯-2-甲酰胺,结构式为:
2.根据权利要求1所述的用途,其特征在于,所述的色酮-2-甲酰胺类化合物的制备方法,包括以下步骤:
S1:将4/5-甲氧基/氟/溴-2-羟基苯乙酮、草酸二乙酯、乙醇钠溶液混合,回流,反应结束后,蒸干溶剂,得到的固体物,然后经萃取、洗涤、干燥、抽滤、浓缩,得第一产物;
S2:将第一产物与加入冰乙酸、浓硫酸混合,回流,反应结束后,冷却至室温;加入蒸馏水,静置一夜;取出抽滤后,放置一夜,取出抽滤,得到第二产物;
S3:第二产物中加入冰乙酸、盐酸混合液,回流,反应结束后,冷却至室温;加入蒸馏水,静置一夜;取出抽滤后,放置一夜,得到色酮-2-甲酸产品;
S4:将色酮-2-甲酸产品、1-羟基苯并三唑、1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐、N,N-二甲基甲酰胺、三乙胺混合,冰水浴搅拌,然后加入3-氨基吡啶,反应;
S5:反应结束后,依次进行萃取、洗涤、干燥、抽滤、浓缩、干燥;加入硅胶粉搅拌,加入乙酸乙酯旋蒸,色谱分离,得到目标产物。
3.根据权利要求2所述的用途,其特征在于:步骤S1中,乙醇钠溶液浓度为20%。
4.根据权利要求2所述的用途,其特征在于:步骤S1中,回流温度为90℃,时间为4小时。
5.根据权利要求2所述的用途,其特征在于:步骤S2、S3中回流温度为100℃,时间为6小时。
6.根据权利要求2所述的用途,其特征在于:步骤S2中,冰乙酸、浓硫酸体积比为100:1。
7.根据权利要求2所述的用途,其特征在于:步骤S3中,冰乙酸、盐酸体积比为2:1,盐酸浓度为6mol/L。
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