CN104910041B - 棉酚的芳香胺席夫碱衍生物及其制备方法和抗植物病毒应用 - Google Patents

棉酚的芳香胺席夫碱衍生物及其制备方法和抗植物病毒应用 Download PDF

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CN104910041B
CN104910041B CN201410092207.6A CN201410092207A CN104910041B CN 104910041 B CN104910041 B CN 104910041B CN 201410092207 A CN201410092207 A CN 201410092207A CN 104910041 B CN104910041 B CN 104910041B
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汪清民
李玲
刘玉秀
李永强
李铮
王开亮
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Nankai University
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Abstract

本发明涉及如通式(I)所示的棉酚的芳香胺席夫碱衍生物及其制备和在农药上的应用,该类化合物代表一种新颖简洁的抗病毒结构类型,合成方法简洁实用,易于工业化放大。棉酚的芳香胺席夫碱类化合物用作新型抗植物病毒剂,能很好地抑制烟草花叶病毒、辣椒病毒、水稻病毒、番茄病毒、甘薯病毒、马铃薯病毒和瓜类病毒及玉米矮花叶病毒等,可有效防治烟草、辣椒、水稻、番茄、甘薯、马铃薯、瓜类及玉米等多种作物的病毒病,尤其适合于防治烟草花叶病。(其中Ar的意义见说明书)

Description

棉酚的芳香胺席夫碱衍生物及其制备方法和抗植物病毒应用
技术领域
本发明涉及棉酚的芳香胺席夫碱衍生物及其制备和抗植物病毒应用,属农药技术领域。
背景技术
棉酚(结构式一)主要存在于棉籽中,占棉籽总重的0.4%-1.7%。棉酚具有非常广泛的生物活性:几乎对所有的癌细胞都有抑制活性;能抑制多种病毒,如现在难治的HIV,禽流感等;具有抗寄生虫活性(疟疾,锥虫病等);有杀菌杀虫活性,且棉酚类化合物在棉株体内的含量和不同物质的比例会受到外界病菌和昆虫的影响;同时还有抗氧化活性,在橡胶,化工领域也显示了它的应用等等(徐志宏,中国油脂,2008,33(8),6-10)。因此,针对棉酚的研究已成为当今科学家研究的热点。
很多研究表明棉酚对单胃动物有毒性(张建新,吴云锋,樊兵,植物病理学报,2005,35,514-519),并且通过修饰棉酚的醛基不仅可以保持其治疗活性也可以降低它的毒性。为了研究棉酚的结构,已有大量的棉酚席夫碱衍生物被合成,但是仅有一些衍生物被测试了生物活性,包括抗癌,抗疟疾和诱导产生干扰素活性。而棉酚的芳香胺席夫碱衍生物仅被Rezhepov小组测试了诱导干扰素产生的活性,结果表明简单的芳香胺衍生物几乎没有活性,而含磺酸酯和杂环取代基的衍生物显示出一定的活性(Rezhepov,K.Zh.Chem.Nat.Compd.,2002,38(4),319-322;Rezhepov,K.Zh.Chem.Nat.Compd.,2003,39(4),358-361.),其他生物活性方面还未见报道。
植物病毒种类繁多,分布十分广泛,农业生产中病毒病是仅次于真菌的第二大类植物病害。绝大部分经济作物都因受植物病毒的危害而不同程度减产或品质下降,防治极为困难,素有“植物癌症”之称。
植物病毒病的防治目前主要使用抗病毒剂,许多病毒抑制剂只能降低症状的严重度,目前有效而令人满意的植物病毒抑制剂实用化品种还不多,尤其特效的治疗性药剂更少,所报道的药剂在田间实际应用时其防效大多在60%以下(张华,宋宝安,农药,2002,41(2),6-9.)。目前国内外用于防治烟草花叶病毒等植物病毒的化学防治剂主要有天然抗病毒剂和合成抗病毒剂两大类(伍小良,农药研究与应用,2007,11(2),27-29;成磊,新疆农垦科技,2007,1,50-511.)。
发明内容
本发明目的在于提供一类棉酚的芳香胺席夫碱衍生物作为新型、高效、低毒的抗植物病毒剂。结构通式如下:
式中,Ar代表芳香烃,包括苯,联苯,稠芳环,芳杂环,带有各种给电子基,吸电子基取代的芳香环,包括单个或多个取代基的芳环。
本发明所述的棉酚的芳香胺席夫碱衍生物是如下结构式二中所示结构3-25为代表的化合物。
本发明的另一个目的在于提供棉酚的芳香胺席夫碱衍生物的制备方法,其优点在于原料为天然植物产品-醋酸棉酚,制备方法简单,只需一步反应就可以获得棉酚的芳香胺席夫碱衍生物,反应条件温和,易控制。
本发明通式(I)的化合物可以通过方法一制备(Scheme1):醋酸棉酚与芳香胺发生缩合反应:
本发明通式(I)的化合物可以通过方法二制备(Scheme2):芳香胺首先与氢氧化钠发生反应,接着再与醋酸棉酚发生缩合反应:
本发明的再一个目的在于提供棉酚的芳香胺席夫碱衍生物的抗植物病毒应用。本发明通式(I)的化合物具有优异的抗植物病毒活性,能很好地抑制烟草花叶病毒、辣椒病毒、水稻病毒、番茄病毒、甘薯病毒、马铃薯病毒和瓜类病毒及玉米矮花叶病毒等,可有效防治烟草、辣椒、水稻、番茄、甘薯、马铃薯、瓜类及玉米等多种作物的病毒病,尤其适合于防治烟草花叶病。
本发明通式(I)的化合物作为植物病毒抑制剂可以直接使用,也可以加上农业上接受的载体使用,也可以和其他抗植物病毒剂如苯并噻二唑(BTH)、噻酰菌胺(TDL)、4-甲基-1,2,3-噻二唑-5-甲酸(TDLA)、DL-β-氨基丁酸(BABA)、病毒唑、宁南霉素、菲并吲哚里西啶生物碱安托芬、联三唑类化合物XY-13和XY-30、病毒A、水杨酸、氨基寡糖素形成互作组合物使用,这些组合物有的表现增效作用,有的表现相加作用。
本发明的棉酚的芳香胺席夫碱衍生物较现有使用的病毒抑制剂,具有很大的优势:易于制备,水溶解性好,抗植物病毒活性显著,且对多种植物病毒具有抑制作用;毒性低,环境兼容性好,对非靶标生物安全。
具体实施方式
以下通过实施例对本发明作进一步的详细说明,但本发明不限于这些实施例。
实施例1:棉酚-苯胺席夫碱(3)的合成:
在100mL圆底瓶中,加入醋酸棉酚0.50g(0.86mmol)和40mL无水乙醇,全溶后再加入苯胺0.16g(1.73mmol)。反应液加热回流5小时。自然冷至室温后,将反应液过滤,固体用苯重结晶后,抽滤,干燥,得到目标化合物。收率,95%;熔点:252-253℃;1H NMR(400MHz,CDCl3)δ10.17(d,J=12.3Hz,2H),7.89(s,2H),7.64(s,2H),7.37(t,J=7.5Hz,4H),7.30(d,J=7.9Hz,2H),7.19(t,J=6.9Hz,2H),5.77(s,2H),3.70-3.77(m,2H),2.16(s,6H),1.51-1.57(m,12H);HRMS[ESI]calcd for C42H39N2O6(M-H)-667.2814;found,667.2812.
实施例2:棉酚-4-钠磺酸苯胺席夫碱(11)的合成
在100mL圆底瓶中,加入氢氧化钠0.11g(2.59mmol),无水乙醇40mL,对氨基苯磺酸0.30g(1.73mmol),加热回流1小时,生成钠盐,再加入醋酸棉酚0.50g(0.86mmol),继续加热5小时后,冷至室温,抽滤,用异丙醇和甲醇重结晶,得紫色固体0.27g。收率:36%;熔点>300℃;1H NMR(400MHz,DMSO-d6)δ14.94(d,J=11.7Hz,2H),10.41(d,J=11.7Hz,2H),8.58(s,2H),8.34(s,2H),7.64(d,J=8.0Hz,4H),7.52(s,2H),7.29(d,J=8.0Hz,4H),3.80-3.70(m,2H),2.00(s,6H),1.52-1.43(m,12H).HRMS[ESI]calcd for C42H39N2O12S2(M-2Na+H)-827.1950,found827.1928.
实施例3:棉酚的芳香胺席夫碱衍生物4-10,12-22,24-25的合成:通过重复实施例1的方法完成
棉酚-4-甲基苯胺席夫碱(4)的合成:
橙色固体.收率:95%;熔点:246-248℃;1H NMR(400MHz,CDCl3)δ10.14(d,J=12.3Hz,2H),7.91(s,2H),7.63(s,2H),7.20(d,J=8.35Hz,4H),7.15(d,J=8.35Hz,4H),5.75(s,2H),3.71-3.77(m,2H),2.33(s,6H),2.15(s,6H),1.55(d,J=6.0Hz,12H);HRMS[ESI]calcdfor C44H43N2O6(M-H)-,695.3127;found,695.3139.
棉酚-4-甲氧基苯胺席夫碱(5)的合成:
暗黄色固体.收率,60%;熔点:272-274℃;1H NMR(400MHz,CDCl3)δ15.08(d,J=12.0Hz,2H),10.09(d,J=12.0Hz,2H),7.90(s,2H),7.63(s,2H),7.24(d,J=9.0Hz,4H),6.89(d,J=9.0Hz,4H),5.75(s,2H),3.79(s,6H),3.77-3.70(m,2H),2.15(s,6H),1.57-1.54(m,12H).HRMS[ESI]calcd for C44H45N2O8(M+H)+,729.3170;found,729.3163.
棉酚-4-羟基苯胺席夫碱(6)的合成:
橙色固体.收率:79%;熔点:241-243℃;1H NMR(400MHz,DMSO-d6)δ15.18(d,J=11.8Hz,2H),10.30(d,J=11.8Hz,2H),9.66(s,2H),8.52(s,2H),8.15(s,2H),7.51(s,2H),7.21(d,J=8.8Hz,4H),6.83(d,J=8.8Hz,4H),3.79-3.70(m,2H),1.99(s,6H),1.49-1.44(m,12H).HRMS[ESI]calcd for C42H32N2O8(M-H)-,699.2712;found,699.2712.
棉酚-4-氟苯胺席夫碱(7)的合成:
黄色固体.收率:78%;熔点:266℃变黑分解;1H NMR(400MHz,DMSO-d6)δ14.96(d,J=11.6Hz,2H),10.31(d,J=11.6Hz,2H),8.54(s,2H),8.22(s,2H),7.52(s,2H),7.45-7.38(m, 4H),7.30(t,J=8.5Hz,4H),3.79-3.71(m,2H),2.00(s,6H),1.49-1.43(m,12H).HRMS[ESI]calcd for C42H37F2N2O6(M-H)-,703.2625;found,703.2603.
棉酚-4-氯苯胺席夫碱(8)的合成:
黄色固体.收率:64%;熔点:286-287℃;1H NMR(400MHz,CDCl3)δ14.95(d,J=12.0Hz,2H),10.09(d,J=12.0Hz,2H),7.82(s,2H),7.63(s,2H),7.33(d,J=8.6Hz,4H),7.23(d,J=8.6Hz,4H),5.75(s,2H),3.80-3.64(m,2H),2.15(s,6H),1.56-1.53(m,12H).HRMS[ESI]calcd for C42H37Cl2N2O6(M-H)-,735.2034;found,735.2034.
棉酚-4-硝基苯胺席夫碱(9)的合成:
橙红色固体.收率:81%;熔点:284-286℃;1H NMR(400MHz,CDCl3)δ14.84(d,J=11.7Hz,2H),10.12(d,J=11.7Hz,2H),8.24(d,J=9.0Hz,4H),7.69(s,2H),7.64(s,2H),7.36(d,J=9.0Hz,4H),5.82(s,2H),3.75-3.66(m,2H),2.17(s,6H),1.58-1.52(m,12H);HRMS[ESI]calcd for C42H38N4NaO10(M+Na)+,781.2480;found,781.2486.
棉酚-4-三氟甲基苯胺席夫碱(10)的合成:
亮黄色固体.收率:79%;熔点:261-263℃;1H NMR(400MHz,CDCl3)δ14.89(d,J=11.2Hz,2H),10.15(d,J=12.0Hz,2H),7.77(s,2H),7.55-7.65(m,6H),7.37(d,J=8.4Hz,4H),5.75(s,2H),3.68-3.78(m,2H),2.16(t,J=10.8Hz,6H),1.55-1.58(m,12H);HRMS[ESI]calcd for C44H38F6N2NaO6(M+Na)+,827.2526;found,827.2520.
棉酚-4-三氟甲氧基苯胺席夫碱(12)的合成:
黄色固体.收率:72%;熔点:251-253℃;1H NMR(400MHz,CDCl3)δ14.94(d,J=12.0Hz,2H),10.10(d,J=12.0Hz,2H),7.81(s,2H),7.63(s,2H),7.31(d,J=8.6Hz,4H),7.22(d,J=8.6Hz,4H),5.80(s,2H),3.77-3.67(m,2H),2.16(s,6H),1.56-1.53(m,12H).HRMS[ESI]calcd for C44H37F6N2O8(M-H)-835.2460,fund835.2441.
棉酚-2-羟基苯胺席夫碱(13)的合成:
亮黄色固体.收率:91%;熔点:262-263℃;1H NMR(400MHz,DMSO-d6)δ14.67(d,J=12.7Hz,2H),10.48(s,2H),10.43(d,J=12.7Hz,2H),8.68(s,2H),8.21(s,2H),7.51(s,2H),7.33(d,J=8.1Hz,2H),7.07-6.98(m,4H),6.86(t,J=7.3Hz,2H),3.78-3.70(m,2H),2.00(s,6H),1.49-1.44(m,12H).HRMS(ESI)m/zcalcd for C42H39N2O8(M-H)-,699.2712;found,699.2704.
棉酚-3-羟基苯胺席夫碱(14)的合成:
橙色固体.收率:56%;熔点:259-262℃;1H NMR(400MHz,DMSO-d6)δ14.86(d,J=12.0Hz,2H),10.34(d,J=12.0Hz,2H),9.82(s,2H),8.57(s,2H),8.32(s,2H),7.51(s,2H),7.22(t,J=8.1Hz,2H),6.78-6.74(m,2H),6.73(t,J=1.9Hz,2H),6.63(dd,J=8.1,1.9Hz,2H),3.80-3.68(m,2H),1.99(s,6H),1.49-1.44(m,12H).HRMS(ESI)m/zcalcd forC42H39N2O8(M-H)-,699.2712;found,699.2704.
棉酚-2-甲氧基苯胺席夫碱(15)的合成:
黄色固体.收率:76%;熔点:252-254℃;1H NMR(400MHz,CDCl3)δ14.75(d,J=12.8Hz,2H),10.20(d,J=12.8Hz,2H),7.97(s,2H),7.63(s,2H),7.37(d,J=7.5Hz,2H),7.14(t,J=7.3Hz,2H),6.98(d,J=7.8Hz,2H),6.93(t,J=7.7Hz,2H),5.76(s,2H),4.03(s,6H),3.78-3.69(m,2H),2.15(s,6H),1.58-1.52(m,12H).HRMS[ESI]calcd forC44H43N2O8(M-H)-727.3025,found727.3002.
棉酚-3-甲氧基苯胺席夫碱(16)的合成:
黄色固体.收率:83%;熔点:266-268℃;1H NMR(400MHz,CDCl3)δ14.82(d,J=12.2Hz,2H),10.14(d,J=12.2Hz,2H),7.87(s,2H),7.63(s,2H),7.26-7.23(t,J=8.0Hz,2H),6.89(dd,J=8.0,1.4Hz,2H),6.81(s,2H),6.71(dd,J=8.0,1.4Hz,2H),5.83(s,2H),3.79(s,6H),3.76-3.67(m,2H),2.15(s,6H),1.57-1.52(m,12H).HRMS[ESI]calcd forC44H43N2O8(M-H)-727.3025,found727.3009.
棉酚-2,4-二甲氧基苯胺席夫碱(17)的合成:
橙色固体.收率:97%;熔点:255-257℃;1H NMR(400MHz,CDCl3)δ14.89(d,J=12.8Hz,2H),10.13(d,J=12.8Hz,2H),7.99(s,2H),7.63(s,2H),7.27(d,J=8.8Hz,2H),6.54(d,J=2.4Hz,2H),6.44(dd,J=8.8,2.4Hz,2H),5.76(s,2H),3.99(s,6H),3.79(s,6H),3.77-3.69(m,2H),2.15(s,6H),1.57-1.52(m,12H).HRMS[ESI]calcd for C46H47N2O10(M-H)-787.3236,found 787.3236.
棉酚-2,5-二甲氧基苯胺席夫碱(18)的合成:
亮黄色固体.收率:89%;熔点:234-235℃;1H NMR(400MHz,CDCl3)δ14.67(d,J=12.0Hz,2H),10.14(d,J=12.0Hz,2H),7.95(s,2H),7.63(s,2H),6.99-6.82(m,4H),6.65(d,J=7.2Hz,2H),5.79(s,2H),3.98(s,6H),3.73(s,8H),2.15(s,6H),1.55(brs,12H).HRMS[ESI]calcd for C46H47N2O10(M-H)-787.3236,found787.3219.
棉酚-2-三氟甲基苯胺席夫碱(19)的合成:
褐色固体.收率:43%;熔点:251-253℃;1H NMR(400MHz,CDCl3)δ15.21(d,J=11.0Hz,2H),10.10(d,J=11.0Hz,2H),7.74(s,2H),7.68(d,J=7.7Hz,2H),7.62(s,2H),7.53(t,J=7.7Hz,2H),7.46(d,J=7.7Hz,2H),7.26(t,J=7.7Hz,2H),5.77(s,2H),3.76-3.66(m,2H),2.15(s,6H),1.57-1.51(m,12H).HRMS[ESI]calcd for C44H37F6N2O6(M-H)-803.2561,found 803.2533.
棉酚-3-三氟甲基苯胺席夫碱(20)的合成:
黄色固体.收率:81%;熔点:262-264℃;1H NMR(400MHz,CDCl3)δ15.02(d,J=11.7Hz,2H),10.14(d,J=11.7Hz,2H),7.79(s,2H),7.65(s,2H),7.54-7.41(m,8H),5.79(s,2H),3.77-3.69(m,2H),2.16(s,6H),1.58-1.53(m,12H).HRMS[ESI]calcd forC44H37F6N2O6(M-H)-:803.2561,found903.2543.
棉酚-3,5-二(三氟甲基)苯胺席夫碱(21)的合成:
黄色固体.收率:49%;熔点:221-223℃;1H NMR(400MHz,CDCl3)δ15.12(d,J=11.6Hz,2H),10.10(d,J=11.6Hz,2H),7.72-7.62(m,10H),5.85(s,2H),3.89-3.58(m,2H),2.17(s,6H),1.57-1.51(m,12H).HRMS[ESI]calcd for C46H35F12N2O6(M-H)-939.2309,found939.2283.
棉酚-3-硝基苯胺席夫碱(22)的合成:
橘红色固体.收率:62%;熔点:269-270℃;1H NMR(400MHz,CDCl3)δ15.03(d,J=11.6Hz,2H),10.16(d,J=11.6Hz,2H),8.15(s,2H),8.00(d,J=7.5Hz,2H),7.73(s,2H),7.66(s,2H),7.62-7.50(m,4H),5.79(s,2H),3.76-3.70(m,2H),2.17(s,6H),1.56(brs,12H).
棉酚-1-萘胺席夫碱(24)的合成:
橙红色固体.收率:82%;熔点:281℃;1H NMR(400MHz,CDCl3)δ15.17(d,J=12.2Hz,2H),10.32(d,J=12.2Hz,2H),7.92(s,2H),7.84(d,J=8.8Hz,2H),7.78(d,J=7.4Hz,4H),7.69(s,2H),7.67(s,2H),7.51-7.38(m,6H),5.85(s,2H),3.82-3.70(m,2H),2.19(s,6H),1.59-1.55(m,12H).
棉酚-2-萘胺席夫碱(25)的合成:
橙红色固体.收率:86%;熔点:280-281℃;1H NMR(400MHz,CDCl3)δ15.88(d,J=11.6Hz,2H),10.36(d,J=11.6Hz,2H),8.36(d,J=8.4Hz,2H),7.99(s,2H),7.91(d,J=8.4Hz,2H),7.75-7.70(m,4H),7.68(s,2H),7.60(t,J=7.5Hz,2H),7.52(d,J=7.4Hz,2H),7.44(t,J=7.8Hz,2H),5.86(s,2H),3.85-3.73(m,2H),2.20(s,6H),1.60(t,J=6.1Hz,12H).
实施例4:棉酚-2-甲氧基-4-钠磺酸苯胺席夫碱(23)的合成:通过重复实施例2的方法完成。
黄色固体,收率,65%;熔点>300℃;1H NMR(400MHz,DMSO-d6)δ14.93(d,J=12.2Hz,2H),10.42(d,J=12.2Hz,2H),8.66(s,2H),8.62(s,2H),7.69(s,2H),7.48(s,2H),7.43(d,J=8.5Hz,2H),7.14(d,J=8.5Hz,2H),3.97(s,6H),3.80-3.68(m,2H),1.97(s,6H),1.51-1.41(m,12H).HRMS[ESI]calcd for C44H43N2O14S2(M-2Na+H)-887.2161,found887.2121.
实施例5:实施例1-4中化合物3-25的理化性质
本专利棉酚的芳香胺席夫碱衍生物3-25具有很好的光、热稳定性和水溶解性,优于棉酚(1)和醋酸棉酚(2),在常规有机溶剂(如二氯甲烷、三氯甲烷、甲苯、乙醇等)中也具有比它们更好的溶解性。在50℃条件下用白炽灯照射样品24h后通过核磁检测,棉酚的芳香胺席夫碱衍生物3-25没有变化,而棉酚有50%都已经分解。同等体积的水中溶解棉酚的芳香胺席夫碱衍生物3-25的质量远远多于棉酚。
实施例6:生物活性以抗烟草花叶病毒(Tobacco mosaic virus,TMV)活性为例,
棉酚的芳香胺席夫碱衍生物3-25抗烟草花叶病毒活性的测定程序如下:
1、病毒提纯及浓度测定:
病毒提纯及浓度测定参照南开大学元素所生测室编制烟草花叶病毒SOP规范执行。病毒粗提液经2次聚乙二醇离心处理后,测定浓度,4℃冷藏备用。
2、化合物溶液配制:
称量后,原药加入DMF溶解,制得1×105μg/mL母液,后用含1‰吐温80水溶液稀释至所需浓度;病毒唑制剂直接兑水稀释。
3、离体作用:
摩擦接种珊西烟适龄叶片,用流水冲洗,病毒浓度10μg/mL。收干后剪下,沿叶中脉对剖,左右半叶分别浸于1‰吐温水及药剂中,30min后取出,于适宜光照温度下保湿培养,每3片叶为1次重复,重复3次。3d后记录病斑数,计算防效。
4、活体保护作用:
选长势均匀一致的3-5叶期珊西烟,全株喷雾施药,每处理3次重复,并设1‰吐温80水溶液对照。24h后,叶面撒布金刚砂(500目),用毛笔蘸取病毒液,在全叶面沿支脉方向轻擦2次,叶片下方用手掌支撑,病毒浓度10μg/mL,接种后用流水冲洗。3d后记录病斑数,计算防效。
5、活体治疗作用:
选长势均匀一致的3-5叶期珊西烟,用毛笔全叶接种病毒,病毒浓度为10μg/mL,接种后用流水冲洗。叶面收干后,全株喷雾施药,每处理3次重复,并设1‰吐温80水溶液对照。3d后记录病斑数,计算防效。
6、活体钝化作用:
选长势均匀一致的3-5叶期珊西烟,将药剂与等体积的病毒汁液混合钝化30min后,摩擦接种,病毒浓度20μg/mL,接种后即用流水冲洗,重复3次,设1‰吐温80水溶液对照。3d后数病斑数,计算结果。
抑制率(%)=[(对照枯斑数-处理枯斑数)/对照枯斑数]×100%
表1为部分化合物的抗烟草花叶病毒(Tobacco mosaic virus,TMV)活性测试结果:
实施例1-5以及表1中编号所对应的化学结构如下:
从表1中可见,通过改进化合物的理化性质,绝大部分棉酚的芳香胺席夫碱衍生物的抗TMV活性得到明显的提高,而且大部分化合物抗烟草花叶病毒活体活性明显优于商品化品种病毒唑,尤其是化合物9,19在100μg/mL浓度下抗烟草花叶病毒活性与母体化合物棉酚在 500μg/mL浓度下的活性相当,具备极大的开发价值。

Claims (6)

1.棉酚芳香胺席夫碱类化合物(I),
其特征在于所述化合物为:棉酚-4-钠磺酸基苯胺席夫碱(11),棉酚-4-三氟甲氧基苯胺席夫碱(12),棉酚-2-甲氧基苯胺席夫碱(15),棉酚-3-甲氧基苯胺席夫碱(16),棉酚-2,4-二甲氧基苯胺席夫碱(17),棉酚-2-三氟甲基苯胺席夫碱(19),棉酚-3,5-二(三氟甲基)苯胺席夫碱(21),棉酚-2-甲氧基-4-钠磺酸苯胺席夫碱(23)。
2.权利要求1所述的棉酚的芳香胺席夫碱类化合物的制备,其特征在于通过方法一(Scheme1)制备:醋酸棉酚溶于无水乙醇中,再加入芳香胺,加热回流5小时,自然冷至室温后,将反应液过滤,固体重结晶,干燥,得到目标化合物,所述化合物为:棉酚-4-三氟甲氧基苯胺席夫碱(12),棉酚-2-甲氧基苯胺席夫碱(15),棉酚-3-甲氧基苯胺席夫碱(16),棉酚-2,4-二甲氧基苯胺席夫碱(17),棉酚-2-三氟甲基苯胺席夫碱(19),棉酚-3,5-二(三氟甲基)苯胺席夫碱(21),
3.权利要求1所述的棉酚的芳香胺席夫碱类化合物的制备,其特征在于通过方法二(Scheme2)制备:将氢氧化钠、芳香胺和无水乙醇加入圆底烧瓶中,加热回流1小时,再加入醋酸棉酚,继续加热5小时后,冷至室温,将反应液过滤,固体重结晶,干燥,得到目标化合物,所述化合物为:棉酚-4-钠磺酸基苯胺席夫碱(11),棉酚-2-甲氧基-4-钠磺酸苯胺席夫碱(23),
4.权利要求1所述的棉酚的芳香胺席夫碱类化合物在抗植物病毒病中的应用。
5.权利要求4所述的棉酚的芳香胺席夫碱类化合物的应用,其特征在于它作为抗植物病毒剂直接使用。
6.权利要求4所述的芳香胺席夫碱类化合物的应用,其特征在于芳香胺席夫碱类化合物作为抗植物病毒剂和其他抗植物病毒剂如苯并噻二唑(BTH)、噻酰菌胺(TDL)、4-甲基-1,2,3-噻二唑-5-甲酸(TDLA)、DL-β-氨基丁酸(BABA)、病毒唑、宁南霉素、菲并吲哚里西啶生物碱安托芬、联三唑类化合物XY-13和XY-30、病毒A、水杨酸、氨基寡糖素形成互作组合物使用。
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