CN106749395B - 3,4’,4-三羟基芪酯化衍生物及其制备方法和应用 - Google Patents

3,4’,4-三羟基芪酯化衍生物及其制备方法和应用 Download PDF

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CN106749395B
CN106749395B CN201611101343.2A CN201611101343A CN106749395B CN 106749395 B CN106749395 B CN 106749395B CN 201611101343 A CN201611101343 A CN 201611101343A CN 106749395 B CN106749395 B CN 106749395B
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齐军山
王恒
郑秀苗
张博
张悦丽
马立国
祁凯
李长松
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Abstract

本发明涉及3,4’,4‑三羟基芪酯化衍生物,结构通式为:,式中R1、R2、R3基团可选自

Description

3,4’,4-三羟基芪酯化衍生物及其制备方法和应用
技术领域
本发明属于农药领域,涉及3,4’,4-三羟基芪酯化衍生物,具体涉及3,4’,4-三羟基芪酯化衍生物及其制备方法和应用。
背景技术
三羟基芪类化合物往往具有高的生物活性,已经有多种该类化合物作为医药被广泛应用,例如白藜芦醇在医药方面的应用:专利CN97103928公开了芪类化合物及其衍生物在制备内皮素拮抗剂中的应用。该专利公开的是3,4’,5-三羟基芪医药应用:制备内皮素拮抗剂中的应用,并未涉及该化合物及其酯化合物在农业方面的任何应用。并且,专利CN97103928公开的3,4’,5-三羟基芪来自红背丝绸植物的根部有机溶剂提取物,也未涉及其化学合成制备制备方法。3,4’,5-三羟基芪的具体结构如下:
本课题组在研究麦类白粉病的防治时,发现白藜芦醇衍生物对植物病原菌具有较高的抑菌、杀菌活性。然而,若以白藜芦醇为原料开发农用杀菌剂,成本高昂。而以其结构相近的3,4',4-三羟基芪为原料开发农用杀菌剂,成本降低许多,具有较高的性价比,并且符合开发环境友好农药的研究方向。
根据药学分子生物活性原理,我们设计合成了系列3,4’,4-三羟基芪酯化衍生物,并测定了其抑菌活性。
发明内容
本发明的目的是提供3,4’,4-三羟基芪酯化衍生物;
本发明提供3,4’,4-三羟基芪酯化衍生物,结构通式如式Ⅰ所示:
式中R1、R2、R3基团可选自中的一种或几种。
进一步优选地,所述衍生物选自下列化学结构式中的一种:
本发明的再一个目的是提供制备所述化合物的方法,其制备过程如下:
其中R3、R基团可选自
具体的,所述方法包括以下步骤:
(1)3,4-二甲氧基苯甲醛与4-羟基苯乙酸、乙酸酐、三乙胺按照2:2:5:6的摩尔比于110℃反应15小时,经过降温至室温、抽滤、乙醇重结晶、干燥处理,得到(Z)-2-(4'-乙酰氧基苯基)-3-(3,4二甲氧基苯基)丙烯酸;
(2)以喹啉为溶剂、在氮气保护下,(Z)-2-(4'-乙酰氧基苯基)-3-(3,4二甲氧基苯基)丙烯酸与铜粉、NaOH按照58:47:10的摩尔比于210℃反应5~8小时,再通过过滤、乙酸乙酯洗涤、3mol/ml的盐酸洗涤、无水硫酸镁干燥、脱溶处理,制得(E)-3,4二甲氧基-4'-羟基二苯乙烯;
(3)以无水四氢呋喃为溶剂,(E)-3,4二甲氧基-4'-羟基二苯乙烯与R3-Cl、缚酸剂按照1:1:1的摩尔比于0±5 ℃反应3~5小时,经过脱溶、蒸馏水洗涤、二氯甲烷萃取、干燥、脱溶处理,制得目标物A; 所述缚酸剂为NaOH、K2CO3、三乙胺或吡啶;
所述目标物A的化学结构式为:
(4)以二氯甲烷为溶剂,(E)-3,4二甲氧基-4'-羟基二苯乙烯与N,N-二甲基苯胺、无水三氯化铝按照1:5:5的摩尔比于0±2℃反应1小时,再升温至回流反应20小时,经过蒸馏水洗涤、乙酸乙酯萃取、蒸馏水洗涤乙酸乙酯、无水硫酸镁干燥、脱溶、水与乙醇体积比为10:1的混合液重结晶,制得(E)-3,4,4'-三羟基二苯乙烯;
(5)以乙腈为溶剂,(E)-3,4,4'-三羟基二苯乙烯与R-Cl、缚酸剂按照1:3.3:3.3的摩尔比于0±2℃反应1小时,再于20±5℃反应5小时,经过饱和碳酸氢钠水溶液洗涤、抽滤、去离子水水洗、抽滤、干燥处理,乙醇重结晶,制得目标物B;
所述目标物B的化学结构式为:
优选地,所述缚酸剂为NaOH、K2CO3、三乙胺或吡啶。
本发明的第三个目的是提供含3,4’,4-三羟基芪酯化衍生物的制剂,由衍生物和农药的辅料,其中3,4’,4-三羟基芪酯化衍生物在制剂中重量百分比含量为0.1%-99.9%。
本发明的另一目的是提供所述3,4’,4-三羟基芪酯化衍生物作为农用杀菌剂应用。
本发明提供的3,4’,4-三羟基芪酯化衍生物用于防治植物病害是本发明的重要特征之一。
本发明提供的衍生物具有以下优点:
1、本发明的3,4’,4-三羟基芪酯化衍生物可用于防治植物病害,并可取得很好的效果。
2、本发明所述新化合物制备过程中产生的“三废”较少,易于处理,作为杀菌剂农药生产时比较环保。
3、本发明提供了一组新的化合物,该化合物作为新的杀菌剂应用于防治植物病害,可以应用于产生抗药性的病原菌,效果好,且具有成本低的优点。
具体实施方式
本发明通过特定制备和生物活性测定实施例具体的说明3,4’,4-三羟基芪酯化衍生物的制备和生物活性,所述实施例仅用于具体的说明本发明而非限制本发明。
下述实施例中所使用的实验方法如无特殊说明,均为常规方法。
下述实施例中所用的材料、试剂等,如无特殊说明,均可从商业途径得到。
实施例1 化合物LK20140422的制备
(1)(Z)-2-(4'-乙酰氧基苯基)-3-(3,4二甲氧基苯基)丙烯酸的制备:在装有搅拌、回流冷凝管和温度计的250 ml三口瓶中加入10 g ( 60mmol) 3,4-二甲氧基苯甲醛,9.12g(60mmol)4-羟基苯乙酸,持续搅拌下依次加入三乙胺15.38g (150mmol),乙酸酐18.43 g (180mmol),逐渐升温至110 ℃,反应15 h,待反应彻底后,将反应液降至室温,倒入500 ml去离子水中,持续搅拌至析出固体,静置一段时间后抽滤,将固体滤饼乙醇重结晶、干燥,得(Z)-2-(4'-乙酰氧基苯基)-3-(3,4二甲氧基苯基)丙烯酸16.9 g,收率82%。
(2)(E)-3,4-二甲氧基-4'-羟基二苯乙烯的制备:在装有搅拌,冷凝回流管和温度计的250ml 三口烧瓶中加入(Z)-2-(4'-乙酰氧基苯基)-3-(3,4二甲氧基苯基)丙烯酸20g(0.58mol) ,铜粉30g(0.47mol),固体NaOH 4g(0.1mol),100ml喹啉,在氮气保护下,升温到210℃,TLC监控反应。反应完成后,滤出铜粉,用乙酸乙酯洗涤铜粉,用3mol/ml的盐酸洗去喹啉,收集有机层,用无水硫酸镁干燥,抽滤,减压蒸馏,得目标物。收率83%,m.p. 261.1~261.7 ℃。
(3)化合物LK20140422的制备:在装有温度计,磁力搅拌器和恒压滴液漏斗(接有氯化钙干燥管)干燥的100 ml 三口圆底烧瓶中,加入0.8 g(3.12 mmol)(E)-3,4-二甲氧基-4'-羟基二苯乙烯,氢氧化钠0.125g(3.12 mmol),20 mL无水四氢呋喃,于0±5 ℃下,缓慢滴加30 mL干燥的四氢呋喃稀释的0.50 g(3.12 mmol)O,O-二甲氧基硫代磷酰氯,滴加完毕后,缓慢升至室温,TLC监控反应,当(E)-3,4-二甲氧基-4'-羟基二苯乙烯反应彻底后,旋转蒸发除去溶剂,用去离子水洗涤,二氯甲烷萃取,分出有机层,无水硫酸镁干燥,旋转蒸发除去溶剂,得类白色固体0.85 g,收率71%。
实施例2 化合物LK20140425的制备
制备过程之(1)、(2)同实施例1之(1)、(2),不同之处如下:
(3)在装有温度计,磁力搅拌器和恒压滴液漏斗(接有氯化钙干燥管)干燥的100ml 三口圆底烧瓶中,加入3.90 mmol(E)-3,4-二甲氧基-4'-羟基二苯乙烯,缚酸剂无水碳酸钾4.68 mmol,20 mL乙腈,在冰水浴冷却下,缓慢滴加30 mL乙腈稀释的4.68 mmol2-氟苯甲酰氯,滴加完毕后,缓慢升至室温,TLC监控反应,当(E)-3,4-二甲氧基-4'-羟基二苯乙烯反应彻底后,旋转蒸发除去溶剂,加入50 mL饱和碳酸氢钠水溶液,室温下持续搅拌1 h,减压抽滤,用去离子水水洗,滤饼置于红外灯下干燥,得目标物粗品,重结晶,得白色固体1.16g,收率为78%。
实施例3 化合物LK20140426的制备
制备过程同实施例2,不同之处如下:
将实施例2之(3)中反应物2-氟苯甲酰氯替换为2-甲基苯甲酰氯,收率75%。
实施例4 化合物LK20140623的制备
(E)-3,4-二甲氧基-4'-羟基二苯乙烯的制备同实施例1。
(1)(E)-3,4,4'-三羟基二苯乙烯的制备:在装有温度计,磁力搅拌器和回流冷凝管的干燥的500 ml 三口圆底烧瓶中,加入10.25g (40 mmol) (E)-3,4-二甲氧基-4'-羟基二苯乙烯,150 mL二氯甲烷,0±2℃持续搅拌,然后依次加入24.48 g (200 mmol)N,N-二甲基苯胺,26.94 g (200 mmol)无水三氯化铝,逐渐升温至回流,反应20 h。(E)-3,4-二甲氧基-4'-羟基二苯乙烯反应彻底后,将反应液降至室温,倾倒入200 mL去离子水中,静置析出的固体,抽滤,滤饼溶于150 mL乙酸乙酯中,用200 mL去离子水分两次洗涤乙酸乙酯层,收集有机层,无水硫酸镁干燥,抽滤,旋转蒸发除去溶剂,得目标物粗品,用水-乙醇(体积比10:1)重结晶,抽滤,干燥,得褐色固体7.94 g,收率87% ,m.p. 273.1~273.3 ℃。
(2)化合物LK20140623的制备:在装有温度计,磁力搅拌器和恒压滴液漏斗(接有氯化钙干燥管)干燥的100 ml 三口圆底烧瓶中,加入2.19 mmol (E)-3,4,4'-三羟基二苯乙烯,无水碳酸钾7.23 mmol,20 mL乙腈,在冰水浴冷却下,缓慢滴加30 mL乙腈稀释的7.23mmol 2-甲基苯甲酰氯,滴加完毕后,缓慢升至室温,TLC监控反应,当(E)-3,4,4'-三羟基二苯乙烯反应彻底后,旋转蒸发除去溶剂,加入50 mL饱和碳酸氢钠水溶液,室温下持续搅拌1h,减压抽滤,用去离子水水洗,滤饼置于红外灯下干燥,得目标物粗品,重结晶,得淡黄色固体1.05 g,収率80%。
实施例5 化合物LK20140624的制备
制备过程同实施例5,不同之处如下:
将实施例5之(2)反应物2-甲基苯甲酰氯替换为2-氯烟酰氯,收率82%。
实施例6 化合物LK20140625的制备
制备过程同实施例5,不同之处如下:
将实施例5之(2)反应物2-甲基苯甲酰氯替换为2-氟烟酰氯,收率77%。
实施例7 实施例1-6所制备化合物的理化参数测定和化学结构鉴定
测定实施例1-6所制备化合物的熔点、1H-NMR和IR,其化学结构式和理化参数见表2、表3和表4。
表2 实施例1-6所制备的3,4’,4-三羟基芪酯化衍生物物理化学性质
表3 实施例1-6所制备的3,4’,4-三羟基芪酯化衍生物1H-NMR数据
表4 实施例1-6所制备的3,4’,4-三羟基芪酯化衍生物红外光谱数据
由表3和表4可见,实施例1-6所制备的3,4’,4-三羟基芪酯化衍生物的1H-NMR显示与其结构相应的化学位移、H的数目与其结构吻合,IR出现相应的骨架吸收峰。
实施例8 实施例1-6所制备的3,4’,4-三羟基芪酯化衍生物抑菌生物活性测试
(1)液体药剂配制:称取0.045 g药粉加入到烧杯中(已灭菌),然后向烧杯中加入4.5 mL的N-N-二甲基-甲酰胺溶剂,溶解混匀,得到浓度为1000 μg/mL的溶液。
(2)粉状药剂配制:
a.向微型粉碎机中加入10 g白炭黑和0.8 mL的吐温80,研磨粉碎。
b.取1.8 g研磨好的白炭黑和0.2 g药粉加入到已灭菌的研钵中,研磨混合均匀,得到10% 的湿性粉剂。
c.称取0.045 g研磨好的可湿性粉剂,加入到45 mL培养基中,混匀,培养基中药剂浓度为100 μg/mL。
(3)将融化好的45 mL的PDA培养基凉至不烫手的程度,取450 μL已配好的药剂溶液加入到培养基中,摇匀(这时的药剂浓度为100 μg/mL),倒平皿。
(4)接菌:接种病原菌菌饼于100 μg/mL药剂浓度的PDA培养基上,置于恒温培养箱内,待对照快要长满平皿时,用十字交叉法测量菌落直径,取平均值。按下式计算抑制率。
结果与分析:6种3,4’,4-三羟基芪酯化衍生物对植物病原真菌的活性见表5。通过表5可以看出,本发明所公开的新化合物大部分表现出一定的抑菌活性,其中LK20140625、LK20140426对腐霉的抑制活性比较好,室内抑菌活性好于对照药百菌清和3,4’,5-三羟基芪。
表5 6种3,4’,4-三羟基芪酯化衍生物对10种植物病原真菌的活性

Claims (6)

1.3,4',4-三羟基芪衍生物,其特征在于,结构式选自下列化学结构式中的一种:
编 号 化学结构式 编 号 化学结构式 LK20140422 LK20140425 LK20140426 LK20140623 LK20140624 LK20140625
2.一种制备权利要求1所述3,4’,4-三羟基芪酯化衍生物的方法,其特征在于,其制备过程如下:
其中R3、R基团可选自:;所述方法制备的3,4’,4-三羟基芪酯化衍生物为LK20140422、LK20140425、LK20140426、LK20140623、LK20140624或LK20140625。
3.根据权利要求2所述的方法,其特征在于,包括以下步骤:
(1)3,4-二甲氧基苯甲醛与4-羟基苯乙酸、乙酸酐、三乙胺按照2:2:5:6的摩尔比于110℃反应15小时,经过降温至室温、抽滤、乙醇重结晶、干燥处理,得到(Z)-2-(4'-乙酰氧基苯基)-3-(3,4二甲氧基苯基)丙烯酸;
(2)以喹啉为溶剂、在氮气保护下,(Z)-2-(4'-乙酰氧基苯基)-3-(3,4二甲氧基苯基)丙烯酸与铜粉、NaOH按照58:47:10的摩尔比于210℃反应5~8小时,再通过过滤、乙酸乙酯洗涤、3mol/ml的盐酸洗涤、无水硫酸镁干燥、脱溶处理,制得(E)-3,4二甲氧基-4'-羟基二苯乙烯;
(3)以无水四氢呋喃为溶剂,(E)-3,4二甲氧基-4'-羟基二苯乙烯与R3-Cl、缚酸剂按照1:1:1的摩尔比于0±5 ℃反应3~5小时,经过脱溶、蒸馏水洗涤、二氯甲烷萃取、干燥、脱溶处理,制得目标物A; 所述缚酸剂为NaOH、K2CO3、三乙胺或吡啶;
(4)以二氯甲烷为溶剂,(E)-3,4二甲氧基-4'-羟基二苯乙烯与N,N-二甲基苯胺、无水三氯化铝按照1:5:5的摩尔比于0±2℃反应1小时,再升温至回流反应20小时,经过蒸馏水洗涤、乙酸乙酯萃取、蒸馏水洗涤乙酸乙酯、无水硫酸镁干燥、脱溶、水与乙醇体积比为10:1的混合液重结晶,制得(E)-3,4,4'-三羟基二苯乙烯;
(5)以乙腈为溶剂,(E)-3,4,4'-三羟基二苯乙烯与R-Cl、缚酸剂按照1:3.3:3.3的摩尔比于0±2℃反应1小时,再于20±5℃反应5小时,经过饱和碳酸氢钠水溶液洗涤、抽滤、去离子水水洗、抽滤、干燥处理,乙醇重结晶,制得目标物B;所述缚酸剂为NaOH、K2CO3、三乙胺或吡啶。
4.含权利要求1所述衍生物的制剂,由衍生物和农药辅料组成,其中衍生物的
重量含量为0.1%~99.9%。
5.权利要求1所述衍生物在制备防治植物病害的农药中的应用。
6.权利要求4所述的制剂在防治植物病害中的应用。
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