CN110386899A - 一类吡唑甲醇酯衍生物及其制备方法和用途 - Google Patents
一类吡唑甲醇酯衍生物及其制备方法和用途 Download PDFInfo
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Abstract
本发明提供了一类吡唑甲醇酯衍生物及其制备方法和用途,本发明涉及含吡唑的杂环化合物,它们具有如I、II、III所示的化学结构通式。
Description
技术领域:
本发明的技术方案涉及吡唑类化合物,具体涉及吡唑甲醇酯类化合物。
背景技术:
吡唑及其衍生物展现出了非常广的生物活性,也被成功的应用于生物医药与农药领域。具备杀菌活性的吡唑衍生物已被广泛的开发,如商品化的吡唑醚菌酯(pyraclostrobin),吡噻菌胺(penthiopyrad),氟唑环菌胺(sedaxane)以及氟唑菌酰胺(Fluxapyroxad)等。这些化合物大多属于吡唑酰胺或吡唑醚类物质,而含有吡唑醇酯结构的具有杀菌、杀虫等活性的衍生物还比较少见。DE19545637报道了1-甲基-3-叔丁基吡唑-5-基甲醇的4-甲基-1,2,3-噻二唑-5-羧酸酯衍生物对稻梨孢菌(pyricularia oryzae)具有一定的抑制效果;CN101362720A也报道了一类吡唑 -5-基甲醇酯衍生物具有一定的杀虫与杀菌活性。这些已报道的吡唑-5-基甲醇酯衍生物只有在较高的浓度下才具有活性,这不利于农药减施增效以及生态环境保护。另外,吡唑-4-基甲醇酯衍生物的合成与活性研究则更少,还未见文献报道。我们在国家重点研发计划 (2017YFD0200900)的资助下,开发了一类吡唑-4-基甲醇酯衍生物,发现其在较低的浓度下也表现出很好的抑菌活性。
发明内容:
本发明的目的在于提供一类吡唑甲醇酯衍生物的制备方法和用途。
本发明中的一类吡唑甲醇酯衍生物的制备方法,包括以下步骤:
在搅拌下将酰氯滴加到吡唑甲醇、4-二甲氨基吡啶、三乙胺溶于二氯甲烷的溶液中,室温搅拌反应12小时,充分搅拌下加入饱和碳酸氢钠溶液,直到反应不再产生气体为止,分液,有机相依次用饱和碳酸氢钠溶液洗涤,水洗涤。有机相用无水硫酸钠干燥后旋转蒸发除去溶剂,残余物经硅胶柱纯化,得到如下化学结构通式为I、II、III的吡唑甲醇酯类衍生物。
其中,R选自:甲基、丙基、苯基、(反)-2-苯基乙烯基、间三氟甲基苯基、对三氟甲基苯基、间甲氧基苯基、对甲氧基苯基、间氟苯基、对氟苯基、4-甲基-1,2,3-噻二唑-5-基;R′选自:氢、甲基。
作为反应原料的(1H-吡唑-4-基)甲醇、(1H-3,5-二甲基吡唑-4-基)甲醇、(1H-1-甲基吡唑-4- 基)甲醇、1,1′-亚甲基双(1H-吡唑-4-基甲醇),可采用已知的方法,例如在E.Brunet,Eur.J.Org. Chem.1913(2000)中所述的方法制得。
具体实施方式:
以下实施例仅用于说明本发明的内容,而非限制本发明。
实施例1
化学结构通式为I的吡唑甲醇酯类衍生物的合成
在搅拌下将酰氯(2mmol)滴加到(1H-吡唑-4-基)甲醇或(1H-3,5-二甲基吡唑-4-基)甲醇(1 mmol)、4-二甲氨基吡啶(0.2mmol)、三乙胺(2.5mmol)溶于二氯甲烷(30mL)的溶液中,室温搅拌反应12小时,然后在充分搅拌下慢慢加入饱和碳酸氢钠溶液,直到反应不再产生气体为止,分液,有机相用饱和碳酸氢钠溶液洗涤两次(每次20mL),再用水(20mL)洗涤一次。有机相用无水硫酸钠干燥后旋转蒸发除去溶剂,残余物经100-200目的硅胶柱纯化,用乙酸乙酯/石油醚(60-90℃)(1∶5,体积比)作淋洗剂,旋转蒸发除去溶剂后得到化学结构通式为I的吡唑甲醇酯衍生物。
实施例2
化学结构通式为II的吡唑甲醇酯类衍生物的合成
在搅拌下将酰氯(1mmol)滴加到(1H-1-甲基吡唑-4-基)甲醇(1mmol)、4-二甲氨基吡啶(0.1 mmol)、三乙胺(1.2mmol)溶于二氯甲烷(30mL)的溶液中,室温搅拌反应12小时,然后在充分搅拌下慢慢加入饱和碳酸氢钠溶液,直到反应不再产生气体为止,分液,有机相用饱和碳酸氢钠溶液洗涤两次(每次20mL),再用水(20mL)洗涤一次。有机相用无水硫酸钠干燥后旋转蒸发除去溶剂,残余物经100-200目的硅胶柱纯化,用乙酸乙酯/石油醚(60-90℃)(1∶5,体积比)作淋洗剂,旋转蒸发除去溶剂后得到化学结构通式为II的吡唑甲醇酯衍生物。
实施例3
化学结构通式为III的吡唑甲醇酯类衍生物的合成
在搅拌下将酰氯(2mmol)滴加到1,1′-亚甲基双(1H-吡唑-4-基甲醇)(1mmol)、4-二甲氨基吡啶(0.2mmol)、三乙胺(2.5mmol)溶于二氯甲烷(30mL)的溶液中,室温搅拌反应12小时,然后在充分搅拌下慢慢加入饱和碳酸氢钠溶液,直到反应不再产生气体为止,分液,有机相用饱和碳酸氢钠溶液洗涤两次(每次20mL),再用水(20mL)洗涤一次。有机相用无水硫酸钠干燥后旋转蒸发除去溶剂,残余物经100-200目的硅胶柱纯化,用乙酸乙酯/石油醚 (60-90℃)(1∶5,体积比)作淋洗剂,旋转蒸发除去溶剂后得到化学结构通式为III的吡唑甲醇酯衍生物。
以上所合成的化学结构通式为I、II、III的吡唑甲醇酯类衍生物的结构见表1,理化参数见表2。
实施例4
本发明的一类吡唑甲醇酯衍生物I、II、III抑菌活性测定结果
本发明测试的常见植物病原真菌的名称和代号包括PI:马铃薯晚疫病菌(Phytophthora infestans(Mont.)de Bary);CA:花生褐斑病菌(Cercosporaarachidicola);AS:番茄早疫病菌(Alternaria solani);BC:黄瓜灰霉病菌(Botrytiscinerea);GZ:小麦赤霉病菌(Gibberella zeae); PP:苹果轮纹病菌(Physalosporapiricola);SS:油菜菌核病菌(Sclerotinia sclerotiorum);RC:禾谷丝核菌(Rhizoctoniacerealis);PS:水稻纹枯病菌(Pellicularia sasakii),这些菌种具有很好的代表性,能够代表农业生产中田间发生的大部分病原菌的种属。菌体生长率法测定结果见表3,表3表明,在50微克/毫升时,本发明合成的所有化合物均有不同程度的杀菌活性,III-1、 III-2、III-7对AS的杀菌活性高于70%;II-1、II-3、II-4、II-6对GZ的杀菌活性高于50%;I-1、 I-2、I-3、I-4、I-6、I-7、I-8、I-9、I-I0、II-3、II-4、III-2、III-5、III-6、III-7、III-8对SS的杀菌活性高于50%。尤其突出的是本发明合成的化合物III-7对AS的杀菌活性高于80%;I-16 对RC的杀菌活性高于95%;因此,这类化合物在一定程度上显示了较好的杀菌活性。
表1本发明的一类吡唑甲醇酯衍生物的化学结构
表2本发明的一类吡唑甲醇酯衍生物的理化参数
表3本发明的一类吡唑甲醇酯衍生物的抑菌活性(50微克/毫升的抑制率/%)
化合物 | PI | CA | AS | BC | GZ | PP | SS | RC | PS |
I-1 | 3.13 | 14.29 | 3.45 | 19.48 | 38.10 | 16.39 | 53.85 | 24.56 | 21.21 |
I-2 | 6.25 | 17.86 | 10.34 | 24.68 | 33.33 | 0.00 | 57.69 | 36.84 | 21.21 |
I-3 | 6.25 | 25.00 | 31.03 | 27.27 | 42.86 | 4.92 | 50.00 | 15.79 | 21.21 |
I-4 | 9.38 | 42.86 | 20.69 | 32.47 | 35.71 | 3.28 | 57.69 | 3.51 | 3.03 |
I-5 | 12.50 | 32.14 | 10.34 | 19.48 | 33.33 | 11.48 | 46.15 | 0.00 | 3.03 |
I-6 | 15.63 | 25.00 | 10.34 | 24.68 | 35.71 | 0.00 | 53.85 | 3.51 | 0.00 |
I-7 | 12.50 | 17.86 | 0.00 | 19.48 | 38.10 | 0.00 | 57.69 | 36.84 | 0.00 |
I-8 | 9.38 | 28.57 | 3.45 | 14.29 | 30.95 | 9.84 | 50.00 | 0.00 | 0.00 |
I-9 | 12.50 | 7.14 | 13.79 | 27.27 | 33.33 | 3.28 | 50.00 | 5.26 | 3.03 |
I-10 | 18.75 | 3.57 | 17.24 | 37.66 | 38.10 | 1.64 | 57.69 | 1.75 | 0.00 |
I-11 | 12.50 | 42.86 | 31.03 | 16.88 | 35.71 | 8.20 | 46.15 | 15.79 | 21.21 |
I-12 | 11.54 | 15.79 | 27.27 | 6.67 | 19.35 | 13.73 | 28.57 | 26.19 | 17.86 |
I-13 | 7.69 | 8.77 | 21.21 | 20.00 | 9.68 | 17.65 | 35.71 | 45.24 | 21.43 |
I-14 | 23.08 | 8.77 | 30.30 | 13.33 | 16.13 | 5.88 | 25.00 | 19.05 | 7.14 |
I-15 | 0.00 | 5.26 | 18.18 | 16.67 | 12.90 | 17.65 | 35.71 | 23.81 | 25.00 |
I-16 | 23.08 | 5.26 | 30.30 | 10.00 | 19.35 | 9.80 | 17.86 | 97.62 | 17.86 |
II-1 | 18.75 | 0.00 | 6.90 | 22.08 | 50.00 | 14.75 | 34.62 | 33.33 | 15.15 |
II-2 | 9.38 | 25.00 | 37.93 | 27.27 | 42.86 | 21.31 | 38.46 | 45.61 | 21.21 |
II-3 | 15.63 | 17.86 | 34.48 | 27.27 | 52.38 | 29.51 | 57.69 | 42.11 | 9.09 |
II-4 | 9.38 | 39.29 | 44.83 | 11.69 | 52.38 | 22.95 | 57.69 | 33.33 | 21.21 |
II-5 | 9.38 | 14.29 | 31.03 | 22.08 | 45.24 | 26.23 | 46.15 | 31.58 | 6.06 |
II-6 | 12.50 | 3.57 | 24.14 | 19.48 | 50.00 | 24.59 | 38.46 | 22.81 | 12.12 |
III-1 | 3.13 | 7.14 | 72.41 | 11.69 | 14.29 | 8.20 | 38.46 | 10.53 | 3.03 |
III-2 | 0.00 | 0.00 | 79.31 | 14.29 | 38.10 | 6.56 | 57.69 | 8.77 | 15.15 |
III-3 | 9.38 | 39.29 | 31.03 | 19.48 | 33.33 | 4.92 | 38.46 | 12.28 | 18.18 |
III-4 | 6.25 | 42.86 | 31.03 | 14.29 | 28.57 | 4.92 | 34.62 | 10.53 | 12.12 |
III-5 | 6.25 | 25.00 | 37.93 | 14.29 | 28.57 | 8.20 | 50.00 | 7.02 | 21.21 |
III-6 | 3.13 | 28.57 | 34.48 | 11.69 | 33.33 | 8.20 | 50.00 | 1.75 | 18.18 |
III-7 | 0.00 | 28.57 | 82.76 | 22.08 | 26.19 | 6.56 | 50.00 | 14.04 | 15.15 |
III-8 | 3.13 | 32.14 | 24.14 | 11.69 | 30.95 | 4.92 | 53.85 | 8.77 | 24.24 |
III-9 | 3.13 | 32.14 | 44.83 | 6.49 | 28.57 | 3.28 | 46.15 | 5.26 | 15.15 |
III-10 | 12.50 | 35.71 | 55.17 | 11.69 | 30.95 | 4.92 | 30.77 | 7.02 | 9.09 |
PI:马铃薯晚疫病菌(Phytophthora infestans(Mont.)de Bary);CA:花生褐斑病菌(Cercospora arachidicola);AS:番茄早疫病菌(Alternaria solani);BC:黄瓜灰霉病菌(Botrytis cinerea);GZ:小麦赤霉病菌(Gibberella zeae);PP:苹果轮纹病菌(Physalospora piricola);SS:油菜菌核病菌(Sclerotinia sclerotiorum); RC:禾谷丝核菌(Rhizoctonia cerealis);PS:水稻纹枯病菌(Pellicularia sasakii) 。
Claims (5)
1.一类化学结构通式为I、II、III的吡唑甲醇酯类衍生物:
其中,R选自:甲基、丙基、苯基、(反)-2-苯基乙烯基、间三氟甲基苯基、对三氟甲基苯基、间甲氧基苯基、对甲氧基苯基、间氟苯基、对氟苯基、4-甲基-1,2,3-噻二唑-5-基;R′选自:氢、甲基。
2.制备权利要求1所述的一类化学结构通式为I、II、III的吡唑甲醇酯类衍生物的方法,其特征在于合成工艺包括如下步骤:
在搅拌下将酰氯滴加到吡唑甲醇、4-二甲氨基吡啶、三乙胺溶于二氯甲烷的溶液中,室温搅拌反应12小时,充分搅拌下加入饱和碳酸氢钠溶液,直到反应不再产生气体为止,分液,有机相依次用饱和碳酸氢钠溶液洗涤,水洗涤,有机相用无水硫酸钠干燥后旋转蒸发除去溶剂,残余物经硅胶柱纯化,得到权利要求1所述的一类化学结构通式为I、II、III的吡唑甲醇酯类衍生物。
3.根据权利要求2所述的方法,其中所述的酰氯为乙酰氯、丁酰氯、苯甲酰氯、反式肉桂酰氯、间三氟甲基苯甲酰氯、对三氟甲基苯甲酰氯、间甲氧基苯甲酰氯、对甲氧基苯甲酰氯、间氟苯甲酰氯、对氟苯甲酰氯、4-甲基-1,2,3-噻二唑-5-甲酰氯;吡唑甲醇为:(1H-吡唑-4-基)甲醇、(1H-3,5-二甲基吡唑-4-基)甲醇、(1H-1-甲基吡唑-4-基)甲醇、1,1′-亚甲基双(1H-吡唑-4-基甲醇)。
4.根据权利要求2所述的方法,其中制备化学结构通式为I和III的吡唑甲醇酯类衍生物所用吡唑甲醇、4-二甲氨基吡啶、三乙胺、酰氯的摩尔比为1∶0.2∶2.5∶2;制备化学结构通式为II的吡唑甲醇酯类衍生物所用吡唑甲醇、4-二甲氨基吡啶、三乙胺、酰氯的摩尔比为1∶0.1∶1.2∶1。
5.权利要求1所述的一类化学结构通式为I、II、III的吡唑甲醇酯类衍生物用作农业和园艺植物杀菌剂的用途。
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