CN113045556B - 生物碱streptindole衍生物及其制备和在防治植物病毒病菌病中的应用 - Google Patents

生物碱streptindole衍生物及其制备和在防治植物病毒病菌病中的应用 Download PDF

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CN113045556B
CN113045556B CN201911373516.XA CN201911373516A CN113045556B CN 113045556 B CN113045556 B CN 113045556B CN 201911373516 A CN201911373516 A CN 201911373516A CN 113045556 B CN113045556 B CN 113045556B
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王兹稳
高咏悦
康锦
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Tianjin Normal University
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Abstract

本发明涉及一种生物碱streptindole衍生物及其制备和在治疗植物病毒病菌病中的应用,本发明首次发现streptindole衍生物I‑1~I‑19表现出很好的抗植物病毒病菌活性,能很好地抑制烟草花叶病毒(TMV)和黄瓜枯萎,花生褐斑,苹果轮纹,小麦纹枯,玉米小斑,西瓜炭疽,水稻恶苗,番茄早疫,小麦赤霉,水稻稻瘟,辣椒疫霉,油菜菌核,黄瓜灰霉,水稻纹枯14种植物病菌。

Description

生物碱streptindole衍生物及其制备和在防治植物病毒病菌 病中的应用
技术领域
本发明涉及一种生物碱streptindole衍生物及其制备和在防治植物病毒和病菌病中的应用,属于农业防护技术领域。
背景技术
植物病毒病又称为“植物癌症”,在农业生产中是仅次于真菌危害的一类严重的病害。由于植物病毒自身结构、生理和生化方面的特殊性,人类还没有找到高效、低毒的抗植物病毒剂,因而植物病毒病发生面积有不断扩大的趋势,严重影响了农民收入的增加和效益的提高(Science.,2014,344(6181):299-303)。烟草花叶病毒(Tobacco Mosaic Virus,TMV)是目前世界上研究最为深入的模式病毒,属于披盖病毒科(Togaviridae)烟草花叶病毒属(Tobamovirus)的单链RNA(ssRNA)病毒(Annu.Rev.Phytopathol.,2004,42(1):13-34)。TMV可浸染38个科268种植物,该病毒病阻碍了烟草产量和品质的进一步提高,对烟草生产危害极大,一般年份发病率约为25%,严重的达50%以上,经济损失惨重。
目前,不仅有效的植物病毒抑制剂还不多,而且治疗性药剂更少,所报道的药剂在田间实际应用时其防效大多在60%以下。当前使用的代表性农药登记品种有:氨基寡糖素(由D-氨基葡萄糖以β-1.4糖苷键连接的低聚糖天然产物)、宁南霉素、病毒唑、病毒A(盐酸吗啉胍·乙酸铜)等。
生物源天然农药主要是指以植物、动物、微生物等产生的具有农用生物活性的次生代谢产物开发的农药,如2.5%鱼藤酮乳油,15%井岗霉素水溶粉剂,等。次生代谢物质是Czapek在20世纪20年代首先提出来的。所谓次生代谢物质,其来源和性质与基础代谢产物如核酸蛋白质等有所不同,是复杂的分支代谢途径的最后产物,大多数不直接参与维持产生者的生长发育和生殖有关的原始生化过程。基于天然产物的新农药发现已逐渐成为创新农药的主要途径。
Figure BSA0000198237830000011
结构式一
Streptindole(结构式一)是一种具有双吲哚结构的天然生物碱,属于双吲哚甲烷天然产物中的一种。1983年,Osawa等首次从人类肠道菌Streptococcus faecium IB 37分离到streptindole(Tetrahedron Lett.1983,24,4719)。目前还没有关于该类化合物抗植物病毒病菌活性的报道。
发明内容
本发明提供一种生物碱streptindole衍生物I(结构式二)及其制备和在防治植物病毒病菌病中的应用。本专利的一种生物碱streptindole衍生物I具有很好的抗植物病毒和病菌活性。
本发明的一种生物碱streptindole衍生物如通式I所示,具体为I-1~I-19。
Figure BSA0000198237830000021
结构式二
本发明的一种生物碱streptindole衍生物I-1按照反应式一所示的方法制备,两当量的吲哚(1)与一当量的醛(2)在0.2当量的碘催化下缩合得到化合物3,再与水合肼发生肼解反应得化合物4,最后与特戊酰氯反应得化合物I-1。
Figure BSA0000198237830000031
反应式一
本发明的一种生物碱streptindole衍生物I-2~I-11按照反应式二所示的方法制备,化合物4与相应的异硫氰酸酯加成得衍生物I-2~I-11。
Figure BSA0000198237830000032
反应式二
本发明的一种生物碱streptindole衍生物I-12~I-19按照反应式三所示的方法制备,吲哚(1)与醛5在单质碘催化下缩合得6,再经肼解得化合物7,最后与相应的醛缩合得衍生物I-12~I-19。
Figure BSA0000198237830000033
反应式三
相比于现有技术,本发明首次发现streptindole生物碱衍生物I-1~I-19表现出很好的抗植物病毒和病菌活性,能很好地抑制烟草花叶病毒(TMV)和黄瓜枯萎,花生褐斑,苹果轮纹,小麦纹枯,玉米小斑,西瓜炭疽,水稻恶苗,番茄早疫,小麦赤霉,水稻稻瘟,辣椒疫霉,油菜菌核,黄瓜灰霉,水稻纹枯14种植物病菌。本发明使用的合成方法简洁高效,更适于工业化生产。
具体实施方式
实施例1:N-(2,2-双(1H-吲哚-3-基)乙基)特戊酰胺(I-1)的合成:
第一步:0℃,搅拌状态下,向溶有吲哚1(0.59g,5mmol)和醛2(0.48g,2.5mmol)的乙腈溶液(25mL)中加入I2(0.13g,0.5mmol)。保持在该温度下搅拌30min,加入5%Na2S2O3溶液(20mL)淬灭反应。反应液用乙酸乙酯萃取(3×50mL),有机相用饱和食盐水洗涤(100mL),无水Na2SO4干燥,抽滤,浓缩。剩余物以石油醚和乙酸乙酯(2∶1,v/v)柱层析得粉色固体化合物2-(2,2-双(1H-吲哚-3-基)乙基)异吲哚啉-1,3-二酮(3)(0.97g,96%)。熔点210-211℃;1H NMR(400MHz,CDCl3)δ7.97(s,2H,NH),7.75(d,J=8.0Hz,2H,Ar-H),7.72(dd,J=3.2,5.5Hz,2H,Ar-H),7.61(dd,J=3.0,5.4Hz,2H,Ar-H),7.29(d,J=8.0Hz,2H,Ar-H),7.13(t,J=7.2Hz,2H,Ar-H),7.09(d,J=2.0Hz,2H,Ar-H),7.03(t,J=7.5Hz,2H,Ar-H),5.31(t,J=7.7Hz,1H,Ar2-CH),4.37(d,J=7.8Hz,2H,CH2).C26H20N3O2[M+H]+406.1550,found(ESI+)406.1556.
第二步:搅拌状态下,向溶有化合物3(1g,2.5mmol)的甲苯溶液(50mL)中加入80%的水合肼(0.78g,12.5mmol)。反应液加热回流20h,冷至室温。减压浓缩出去甲苯,然后加入二氯甲烷200mL,2mol/L的氢氧化钠水溶液100mL,萃取分液,水相再用100mL二氯甲烷萃取,合并有机相,100mL水洗,干燥,减压脱除溶剂得白色固体化合物2,2-双(1H-吲哚-3-基)乙基-1-胺(4)(0.63g,91%)。熔点164-165℃;1H NMR(400MHz,DMSO-d6)δ10.80(s,2H,NH),7.50(d,J=7.9Hz,2H,Ar-H),7.30(d,J=8.1Hz,2H,Ar-H),7.21(s,2H,Ar-H),7.00(t,J=7.6Hz,2H,Ar-H),6.87(t,J=7.6Hz,2H,Ar-H),4.38(t,J=7.1Hz,1H,Ar2-CH),3.26(d,J=7.0Hz,2H,CH2),1.33(s,2H,NH2).C18H18N3[M+H]+276.1495,found(ESI+)276.1491.
第三步:0℃,搅拌状态下,向化合物4(1g,3.64mmol)和三乙胺(0.76g,7.5mmol)的二氯甲烷(80mL)溶液中,缓慢加入特戊酰氯(0.48g,4mmol),反应液自然升至室温,反应3h,缓慢向反应体系中滴加水(40mL)淬灭反应,分液,水相二氯甲烷萃取(30mL×2),合并有机相用无水Na2SO4干燥,抽滤,浓缩,柱层析得棕色固体化合物I-1(1.14g,87%),熔点125-126℃;1H NMR(400MHz,CDCl3)δ8.34(s,2H,NH),7.52(d,J=7.9Hz,2H,Ar-H),7.25(d,J=8.1Hz,2H,Ar-H),7.08(t,J=14.9Hz,2H,Ar-H),6.95(t,J=14.8Hz,2H,Ar-H),6.80(s,2H,Ar-H),5.74(t,J=5.0Hz,1H,CH2-NH),4.65(t,J=7.1Hz,1H,Ar2-CH),3.92(t,J=6.5Hz,2H,CH2),0.97(s,9H,CH3);13C NMR(100MHz,CDCl3)δ178.8,136.6,126.9,122.2,122.0,119.5,119.3,116.7,111.4,44.0,34.1,27.5.C23H26N3O[M+H]+360.2070,found(ESI+)360.2075.
实施例2:生物碱streptindole衍生物I-2~I-11的合成:
0℃,搅拌状态下,向化合物4(1g,3.64mmol)的二氯甲烷(50mL)溶液中,缓慢加入相应的异硫氰酸酯(3.64mmol),反应液自然升至室温,反应3h,缓慢向反应体系中滴加水(40mL)淬灭反应,分液,水相二氯甲烷萃取(30mL×2),合并有机相依次用饱和碳酸氢钠溶液(40mL),饱和食盐水溶液(40mL)洗涤,无水Na2SO4干燥,抽滤,浓缩,柱层析得化合物I-2~I-11;
1-(2,2-双(1H-吲哚-3-基)乙基)-3-苯基硫脲(I-2).黄棕色固体;收率70%;熔点214-215℃;1H NMR(400MHz,CDCl3)δ8.00(s,2H,NH),7.64(d,J=8.0Hz,2H,Ar-H),7.36(t,J=8.4Hz,4H,Ar-H),7.29(d,J=7.0Hz,1H,Ar-H),7.18-7.24(m,3H,Ar-H),6.99-7.08(m,5H,Ar-H),6.63(d,J=7.8Hz,1H,CH2-NH),6.17(s,1H,CH2NHCS-NH),4.97(t,J=7.1Hz,1H,Ar2-CH),4.43(t,J=5.4Hz,2H,CH2);13C NMR(100MHz,DMSO-d6)δ180.4,139.6,137.0,130.4,129.0,127.2,124.4,123.2,123.0,121.4,119.5,118.7,116.5,111.9,48.9,33.5.C25H23N4S[M+H]+411.1638,found(ESI+)411.1633.
1-(2,2-双(1H-吲哚-3-基)乙基)-3-对甲苯基硫脲(I-3).黄棕色固体;收率77%;熔点227-228℃;1H NMR(400MHz,CDCl3)δ8.02(s,2H,NH),7.65(d,J=8.0Hz,2H,Ar-H),7.38(d,J=8.1Hz,4H,Ar-H),7.16(d,J=3.4Hz,2H,Ar-H),6.99(d,J=2.2Hz,2H,Ar-H),6.84(d,J=8.2Hz,2H,Ar-H),6.54(d,J=8.1Hz,2H,Ar-H),6.20-6.25(m,1H,CH2-NH),6.12(s,1H,CH2NHCS-NH),4.97(t,J=7.2Hz,1H,Ar2-CH),4.41-4.44(m,2H,CH2),2.37(s,3H,CH3);13C NMR(100MHz,DMSO-d6)δ180.4,137.0,136.8,133.7,129.5,127.2,123.4,123.1,121.4,119.5,118.6,116.6,111.9,48.9,33.5,20.9.C26H25N4S[M+H]+425.1794,found(ESI+)425.1798.
1-(3-氯苯基)-3-(2,2-双(1H-吲哚-3-基)乙基)硫脲(I-4).黄棕色固体;收率53%;熔点103-104℃;1H NMR(400MHz,CDCl3)δ8.05(s,2H,NH),7.91(s,1H,Ar-H),7.64(d,J=8.0Hz,2H,Ar-H),7.37(d,J=8.1Hz,2H,Ar-H),7.21(t,J=7.4Hz,2H,Ar-H),7.07(t,J=7.3Hz,3H,Ar-H),6.98(d,J=2.1Hz,2H,Ar-H),6.94(t,J=8.0Hz,1H,Ar-H),6.79(s,1H,Ar-H),6.53(d,J=7.5Hz,1H,CH2-NH),6.20(s,1H,CH2NHCS-NH),4.96(t,J=7.0Hz,1H,Ar2-CH),4.43(s,2H,CH2);13C NMR(100MHz,CDCl3)δ179.9,136.6,130.7,129.1,128.3,126.6,124.4,122.4,122.33,122.27,119.65,119.56,116.3,111.4,49.5,31.9.C25H22ClN4S[M+H]+445.1248,found(ESI+)445.1257.
1-(2-氯苯基)-3-(2,2-双(1H-吲哚-3-基)乙基)硫脲(I-5).棕黑色固体;收率25%;熔点62-63℃;1H NMR(400MHz,CDCl3)δ8.15(s,2H,NH),7.34(d,J=8.3Hz,2H,Ar-H),7.28(dd,J=1.7,7.9Hz,2H,Ar-H),7.06-7.12(m,3H,Ar-H),6.95(d,J=1.7Hz,1H,Ar-H),6.71-6.80(m,4H,Ar-H),4.56(t,J=7.1Hz,1H,Ar2-CH),4.06(s,2H,NH-CS-NH),3.45(d,J=7.1Hz,2H,CH2);13C NMR(100MHz,CDCl3)δ180.1,142.9,136.60,136.55,129.4,127.8,127.7,122.2,122.1,119.6,119.5,119.2,119.0,115.9,111.3,37.1,32.0.C25H22ClN4S[M+H]+445.1248,found(ESI+)445.1253.
1-(2,2-双(1H-吲哚-3-基)乙基)-3-(4-氟苯基)硫脲(I-6).黄棕色固体;收率58%;熔点228-229℃;1H NMR(400MHz,CDCl3)δ8.01(s,2H,NH),7.62(d,J=7.9Hz,2H,Ar-H),7.37(d,J=8.2Hz,2H,Ar-H),7.20(t,J=5.9Hz,2H,Ar-H),7.06(d,J=7.7Hz,2H,Ar-H),6.98(s,2H,Ar-H),6.70(t,J=8.9Hz,2H,Ar-H),6.58-6.61(m,2H,Ar-H),6.28(s,1H,CH2NHCS-NH),5.93(s,1H,CH2-NH),4.95(t,J=7.5Hz,1H,Ar2-CH),4.39-4.42(m,2H,CH2);13C NMR(100MHz,CDCl3)δ180.5,136.5,127.3,127.24,127.16,126.7,124.5,123.0,122.4,122.1,119.7,119.5,116.5,111.2,37.1,31.9.C25H22FN4S[M+H]+429.1544,found(ESI+)429.1549.
1-(3,5-双三氟甲基苯基)-3-(2,2-双(1H-吲哚-3-基)乙基)硫脲(I-7).棕灰色固体;收率90%;熔点128-129℃;1H NMR(400MHz,CDCl3)δ7.94(s,2H,NH),7.54(d,J=8.0Hz,2H,Ar-H),7.52(s,1H,Ar-H),7.39(s,1H,Ar-H),7.26(t,J=8.3Hz,2H,Ar-H),7.12-7.18(m,4H,Ar-H),6.99(t,J=7.3Hz,2H,Ar-H),6.85(s,2H,Ar-H,CH2NHCS-NH),6.18(s,1H,CH2-NH),4.86(s,1H,Ar2-CH),4.33(s,2H,CH2);13C NMR(100MHz,CDCl3)δ180.4,136.5,129.1,128.3,126.5,124.2,123.6,122.5,122.4,121.4,119.7,119.3,111.5,49.4,29.7.C27H21F6N4S[M+H]+547.1386,found(ESI+)547.1382.
1-(2,2-双(1H-吲哚-3-基)乙基)-3-(3,4-二甲氧基苯基)硫脲(I-8).棕灰色固体;收率94%;熔点231-232℃;1H NMR(400MHz,CDCl3)δ8.02(s,2H,NH),7.58(d,J=7.8Hz,2H,Ar-H),7.43(s,1H,Ar-H),7.34(d,J=8.1Hz,2H,Ar-H),7.17(t,J=7.1Hz,2H,Ar-H),7.03(t,J=7.4Hz,2H,Ar-H),6.91(d,J=2.0Hz,2H,Ar-H),6.75-6.82(m,1H,Ar-H),6.48(d,J=8.2Hz,1H,Ar-H),6.29(s,1H,CH2NHCS-NH),6.03-6.05(m,1H,CH2-NH),4.90(t,J=7.1Hz,1H,Ar2-CH),4.39(t,J=6.5Hz,2H,CH2),3.87(s,3H,CH3),3.81(s,3H,CH3);13C NMR(100MHz,CDCl3)δ180.6,149.6,148.2,136.5,126.7,122.3,122.1,119.60,119.56,118.2,116.6,111.4,111.1,109.4,56.0,55.8,49.3,33.4.C27H27N4O2S[M+H]+471.1849,found(ESI+)471.1853.
1-二苯甲基-3-(2,2-双(1H-吲哚-3-基)乙基)硫脲(I-9).棕灰色固体;收率39%;熔点89-90℃;1H NMR(400MHz,CDCl3)δ7.91(s,2H,NH),7.54(d,J=7.9Hz,2H,Ar-H),7.30-7.39(m,7H,Ar-H),7.10-7.20(m,4H,Ar-H),7.04(t,J=7.6Hz,2H,Ar-H),6.94-7.02(m,3H,Ar-H),6.70(s,2H,Ar-H),6.34(s,1H,CH2NHCS-NH),5.98(s,1H,CH2-NH),5.63(s,1H,Ph2-CH),4.73(t,J=6.9Hz,1H,Ar2-CH),4.28(s,2H,CH2);13C NMR(100MHz,CDCl3)δ183.1,139.2,136.5,129.0,128.94,128.86,128.3,128.0,127.1,126.6,122.2,119.5,111.3,64.6,33.6,32.0.C32H29N4S[M+H]+501.2107,found(ESI+)501.2111.
1-环己基-3-(2,2-双(1H-吲哚-3-基)乙基)硫脲(I-10).棕灰色固体;收率83%;熔点86-87℃;1H NMR(400MHz,CDCl3)δ8.14(s,2H,NH),7.60(d,J=7.8Hz,2H,Ar-H),7.36(d,J=8.1Hz,2H,Ar-H),7.20(t,J=7.0Hz,4H,Ar-H),7.08(d,J=7.7Hz,2H,Ar-H),6.93(s,1H,CH2NHCS-NH),5.72(s,1H,CH2-NH),4.84(s,1H,Ar2-CH),4.14-4.23(m,2H,Ar2CH-CH2),3.71(t,J=3.5Hz,1H,CSNH-CH),1.40-1.92(m,10H,(CH2)5);13C NMR(100MHz,DMSO-d6)δ181.8,137.0,127.3,123.0,121.3,119.6,118.6,116.8,111.8,52.1,48.7,34.1,32.8,25.7,24.9.C25H29N4S[M+H]+417.2107,found(ESI+)417.2101.
1-丁基-3-(2,2-双(1H-吲哚-3-基)乙基)硫脲(I-11).棕灰色固体;收率72%;熔点85-86℃;1H NMR(400MHz,CDCl3)δ8.08(s,2H,NH),7.58(d,J=7.8Hz,2H,Ar-H),7.33(d,J=8.1Hz,2H,Ar-H),7.17(t,J=7.4Hz,2H,Ar-H),7.04(d,J=7.3Hz,2H,Ar-H),6.89(s,2H,Ar-H),5.70(s,1H,CH2NHCS-NH),4.82(s,1H,CH2-NH),4.19(s,1H,Ar2CH-CH2),3.51(t,J=6.6Hz,1H,Ar2-CH),3.00(s,2H,CSNH-CH2),0.78-1.71(m,8H,Ar2CH-CH2,NHCH2-(CH2)2CH3);13C NMR(100MHz,CDCl3)δ181.1,136.5,126.7,122.4,122.2,119.5,119.4,116.3,111.4,33.7,29.7,22.7,19.9,14.2,13.7.C23H27N4S[M+H]+391.1951,found(ESI+)391.1956.
实施例3:生物碱streptindole衍生物I-12~I-19的合成:
第一步:0℃,搅拌状态下,向溶有吲哚1(0.59g,5mmol)和醛2(0.26g,2.5mmol)的乙腈溶液(25mL)中加入I2(0.13g,0.5mmol)。保持在该温度下搅拌30min,加入5%Na2S2O3溶液(20mL)淬灭反应。反应液用乙酸乙酯萃取(3×50mL),有机相用饱和食盐水洗涤(100mL),无水Na2SO4干燥,抽滤,浓缩。剩余物以石油醚和乙酸乙酯(5∶1,v/v)柱层析得棕色油状化合物6(1.45g,91%),1H NMR(400MHz,CDCl3)δ8.03(s,2H,NH),7.67(d,J=7.9Hz,2H,Ar-H),7.30(t,J=8.1Hz,2H,Ar-H),7.23-7.21(m,2H,Ar-H),7.14-7.10(m,2H,Ar-H),7.00(d,J=2.0Hz,2H,Ar-H),5.53(s,1H,Ar2-CH),4.25(q,J=7.1Hz,2H,CH2),1.29(t,J=7.1Hz,3H,CH3);13C NMR(100MHz,CDCl3)δ173.7,136.3,126.7,123.5,122.1,119.5,119.3,113.5,111.3,61.2,40.7,14.3.
第二步:搅拌状态下,向溶有酯6(1.59g,5mmol)的乙醇溶液(25mL)中加入80%的水合肼(25mL)。回流反应3h,冷至室温,浓缩掉部分乙醇,析出大量固体,抽滤,水洗,干燥得白色固体化合物7(1.26g,83%),熔点234-235℃;1H NMR(400MHz,DMSO-d6):δ10.87(s,2H,NH),9.42(s,1H,NH2-NH),7.57(d,J=7.9Hz,2H,Ar-H),7.34(d,J=8.1Hz,2H,Ar-H),7.17(d,J=2.2Hz,2H,Ar-H),7.07-7.03(m,2H,Ar-H),6.96-6.92(m,2H,Ar-H),5.26(s,1H,Ar2-CH),4.26(s,2H,NH-NH2);13C NMR(100MHz,DMSO-d6)δ172.3,136.6,127.1,124.1,121.3,119.4,118.6,114.3,111.8,39.5.
第三步:搅拌状态下,向溶有酰肼7(1.52g,5mmol)的乙醇溶液(125mL)中加入相应的醛(5.5mmol)。回流反应7h,冷至室温,浓缩掉部分乙醇,析出大量固体,抽滤,水洗,干燥得酰腙化合物I-12~I-19。
N′-苯亚甲基-2,2-双(1H-吲哚-3-基)乙酰腙(I-12).米黄色固体;收率87%;熔点295-296℃;E∶Z=5∶4,1H NMR(DMSO-d6,400MHz):11.86(for E isomer,s,0.53H,CO-NH),11.40(for Z isomer,s,0.41H,CO-NH),10.96(s,1.06H,NH),10.92(s,0.84H,NH),8.28(for E isomer,s,0.52H,CONHN-CH),8.03(for Z isomer,s,0.41H,CONHN-CH),7.74(d,J=7.2Hz,0.90H,Ar-H),7.63-7.69(m,3H,Ar-H),7.36-7.45(m,5H,Ar-H),7.26(d,J=1.8Hz,0.89H,Ar-H),7.23(d,J=1.8Hz,1.11H,Ar-H),7.05-7.10(m,2H,Ar-H),6.94-7.00(m,2H,Ar-H),6.57(for Z isomer,s,0.45H,Ar2-CH),5.46(for E isomer,s,0.55H,Ar2-CH);13C NMR(100MHz,DMSO-d6)δ173.9,168.8,146.5,142.5,136.23,136.17,134.4,134.3,129.8,129.6,128.8,128.6,126.9,126.7,126.5,124.0,123.8,120.9,120.8,118.85,118.79,118.3,113.3,113.2,111.43,111.40,35.1.C25H21N4O[M+H]+393.1710,found(ESI+)393.1706.
N′-(4-氟苯亚甲基)-2,2-双(1H-吲哚-3-基)乙酰腙(I-13).咖啡色固体;收率74%;熔点176-177℃;E∶Z=3∶2,1H NMR(400MHz,DMSO-d6):11.87(for E isomer,s,0.61H,CO-NH),11.38(for Z isomer,s,0.4H,CO-NH),10.94(s,1H,NH),10.91(s,1H,NH),8.28(s,0.6H,CONHN-CH),8.00(s,0.41H,CONHN-CH),7.97-7.94(m,1H,Ar-H),7.82-7.71(m,2H,Ar-H),7.61(s,1H,Ar-H),7.59(s,1H,Ar-H),7.38-7.20(m,5H,Ar-H),7.08-6.92(m,4H,Ar-H),6.52(for Z isomer,s,0.4H,Ar2-CH),5.43(for E isomer,s,0.59H,Ar2-CH);13C NMR(100MHz,DMSO-d6)δ168.7,160.3,145.3,141.3,136.2,136.1,130.65,130.56,129.1,129.0,126.5,124.0,123.8,120.9,120.8,118.82,118.77,118.3,118.2,115.84,115.79,113.2,111.4,35.1.C25H20FN4O[M+H]+411.1616,found(ESI+)411.1622.
2,2-双(1H-吲哚-3-基)-N′-(4-三氟甲基苯亚甲基)乙酰腙(I-14).白色固体;收率59%;熔点269-270℃;E∶Z=5∶4,1H NMR(DMSO-d6,400MHz):12.02(for E isomer,s,0.53H,CO-NH),11.57(for Z isomer,s,0.42H,CO-NH),10.96(s,1.07H,NH),10.92(s,0.85H,NH),8.35(s,0.53H,CONHN-CH),8.08(s,0.42H,CONHN-CH),7.96(d,J=8.1Hz,0.87H,Ar-H),7.90(d,J=8.2Hz,1.08H,Ar-H),7.78-7.80(m,2H,Ar-H),7.59-7.62(m,2H,Ar-H),7.36(t,J=7.7Hz,2H,Ar-H),7.26(s,0.85H,Ar-H),7.22(s,1.06H,Ar-H),7.04-7.09(m,2H,Ar-H),6.93-6.99(m,2H,Ar-H),6.54(s,0.42H,Ar2-CH),5.46(s,0.53H,Ar2-CH);13C NMR(100MHz,DMSO-d6)δ174.1,169.0,144.7,140.7,138.3,136.22,136.16,127.5,127.2,126.6,126.5,125.6,125.5,124.0,123.8,120.9,120.8,118.8,118.32,118.27,113.2,113.0,111.4,35.2.C26H20F3N4O[M+H]+461.1584,found(ESI+)461.1588.
2,2-双(1H-吲哚-3-基)-N′-(3,4,5-三甲氧基苯亚甲基)乙酰腙(I-15).肉色固体;收率88%;熔点265-266℃;E∶Z=1∶1,1H NMR(DMSO-d6,400MHz):11.81(for E isomer,s,0.52H,CO-NH),11.42(for Z isomer,s,0.48H,CO-NH),10.92(d,J=12.7Hz,2H,NH),8.20(s,0.50H,CONHN-CH),7.91(s,0.47H,CONHN-CH),7.37-7.34(m,2H,Ar-H),7.23-7.20(m,2H,Ar-H),7.08-7.03(m,2H,Ar-H),6.99-6.91(m,4H,Ar-H),6.51(for Z isomer,s,0.48H,Ar2-CH),5.42(for E isomer,s,0.51H,Ar2-CH),3.80(s,6H,OCH3),3.68(s,3H,OCH3);13C NMR(100MHz,DMSO-d6)δ174.0,168.7,153.1,146.6,142.0,136.2,136.1,129.9,129.8,126.7,126.5,123.9,123.8,120.94,120.86,118.9,118.6,118.3,113.5,113.2,111.4,105.6,104.3,103.8,60.1,55.9,35.2.C28H27N4O4[M+H]+483.2027,found(ESI+)483.2021.
N′-(呋喃-2-亚甲基)-2,2-双(1H-吲哚-3-基)乙酰腙(I-16).米黄色固体;收率49%;熔点285-286℃;E∶Z=5∶3,1H NMR(DMSO-d6,400MHz):11.81(for E isomer,s,0.57H,CO-NH),11.37(for Z isomer,s,0.35H,CO-NH),10.97(d,J=1.9Hz,1.24H,NH),10.94(d,J=1.7Hz,0.68H,NH),8.20(s,0.58H,CONHN-CH),7.96(s,0.36H,CONHN-CH),7.87(d,J=1.2Hz,0.34H,Ar-H),7.81(d,J=1.2Hz,0.59H,Ar-H),7.61(d,J=7.9Hz,0.98H,Ar-H),7.60(d,J=7.9Hz,0.93H,Ar-H),7.34-7.44(m,3H,Ar-H),7.26(d,J=2.1Hz,0.79H,Ar-H),7.22(d,J=2.1Hz,1.22H,Ar-H),7.05-7.11(m,2H,Ar-H),6.96-7.01(m,2H,Ar-H),6.92(d,J=3.3Hz,0.37H,Ar-H),6.88(d,J=3.3Hz,0.58H,Ar-H),6.64(q,J=1.8Hz,0.36H,Ar-H),6.61(q,J=1.8Hz,0.64H,Ar-H),6.52(s,0.34H,Ar2-CH),5.43(s,0.54H,Ar2-CH);13C NMR(100MHz,DMSO-d6)δ173.9,168.8,149.4,149.3,145.0,144.8,136.4,136.2,136.1,132.7,126.7,126.5,124.0,123.8,121.0,120.9,118.8,118.4,118.3,113.3,113.2,113.1,112.1,111.5,111.4,34.8.C23H19N4O2[M+H]+383.1503,found(ESI+)383.1509.
2,2-双(1H-吲哚-3-基)-N′-(噻吩-2-亚甲基)乙酰腙(I-17).淡黄色固体;收率53%;熔点297-298℃;E∶Z=1∶1,1H NMR(DMSO-d6,400MHz):11.80(for E isomer,s,0.59H,CO-NH),11.39(for Z isomer,s,0.41H,CO-NH),10.96(s,2H,NH),8.51(s,0.6H,CONHN-CH),8.22(s,0.4H,CONHN-CH),7.66-7.60(m,3H,Ar-H),7.43-7.36(m,3H,Ar-H),7.26-7.21(m,2H,Ar-H),7.14-7.05(m,3H,Ar-H),7.00-6.94(m,2H,Ar-H),6.50(for Z isomer,s,0.41H,Ar2-CH),5.41(for E isomer,s,0.59H,Ar2-CH);13C NMR(100MHz,DMSO-d6)δ173.7,168.6,141.7,139.4,139.1,137.4,136.2,136.1,130.4,129.7,128.5,128.0,127.8,127.6,126.7,126.5,124.0,123.8,120.9,120.8,118.8,118.7,118.3,113.2,113.1,111.4,34.6.C23H19N4OS[M+H]+399.1274,found(ESI+)399.1277.
2,2-双(1H-吲哚-3-基)-N′-辛亚甲基乙酰腙(I-18).米白色固体;收率41%;熔点187-188℃;E∶Z=3∶2,1H NMR(DMSO-d6,400MHz):11.36(for E isomer,s,0.58H,CO-NH),10.88(for Z isomer,s,0.38H,CO-NH),10.91(d,J=7.1Hz,2H,NH),7.56-7.50(m,3H,Ar-H),7.34(d,J=7.4Hz,2H,Ar-H),7.16-7.15(m,2H,Ar-H),7.07-7.02(m,2H,Ar-H),6.96-6.90(m,2H,Ar-H),6.40(for Z isomer,s,0.38H,Ar2-CH),5.29(for E isomer,s,0.59H,Ar2-CH),2.27-2.15(m,2H,CONHNCH-CH2),1.52-1.41(m,2H,CONHNCHCH2-CH2),1.35-1.20(m,8H,CONHNCH(CH2)2-(CH2)4),0.84(d,J=6.4Hz,3H,CH3);13C NMR(100MHz,DMSO-d6)δ173.4,168.2,150.7,146.5,136.2,136.1,126.7,126.5,123.8,123.7,120.8,120.7,118.8,118.7,118.2,118.1,113.5,113.4,111.4,111.3,34.5,31.9,31.2,31.1,28.6,28.5,28.4,26.0,25.7,22.0,13.9.C26H31N4O[M+H]+415.2492,found(ESI+)415.2487.
N′-丁亚甲基-2,2-双(1H-吲哚-3-基)乙酰腙(I-19).米黄色固体;收率33%;熔点198-199℃;E∶Z=7∶4,1H NMR(DMSO-d6,400MHz):11.37(for E isomer,s,0.63H,CO-NH),10.92(for Z isomer,s,0.39H,CO-NH),10.90(for E isomer,s,1.21H,NH),10.87(for Zisomer,s,0.80H,NH),7.50-7.56(m,2.79H,Ar-H),7.32-7.35(m,2.51H,Ar-H),7.15-7.17(m,2H,Ar-H),7.02-7.07(m,2H,Ar-H),6.90-6.96(m,2H,Ar-H),6.39(for Z isomer,s,0.38H,Ar2-CH),5.29(for E isomer,s,0.65H,Ar2-CH),2.14-2.24(m,2H,CONHNCH-CH2),1.43-1.55(m,2H,CONHNCHCH2-CH2),0.86-0.93(m,3H,CH3);13C NMR(100MHz,DMSO-d6)δ173.4,168.2,150.6,146.5,136.15,136.09,126.7,126.5,123.9,123.7,120.9,120.8,118.81,118.76,118.3,118.2,113.5,113.4,111.4,111.3,34.6,33.8,33.7,19.3,19.1,13.6,13.5.C22H23N4O[M+H]+359.1866,found(ESI+)359.1860.
实施例4:抗烟草花叶病毒活性的测定,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;宁南霉素制剂直接兑水稀释。
3、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(600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。
4、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。
5、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10μg/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%
首先在处理剂量500μg/mL条件下进行所有化合物的抗烟草花叶病毒活体钝化活性测试,相对抑制率大于40%的化合物进一步进行处理剂量500μg/mL条件下的活体治疗和活性保护活性测试。阳性对照为商品化抗植物病毒药剂病毒唑。
表1 生物碱streptindole衍生物I-1~I-19的抗烟草花叶病毒(TMV)活性测试结果
Figure BSA0000198237830000101
Figure BSA0000198237830000111
从表一数据可见,生物碱streptindole衍生物I-1~I-19均表现出不错的抗TMV活性,化合物I-1,I-5,I-10活性明显优于病毒唑,具有极大的开发价值。
实施例5:抗菌活性测试,测定程序如下:
离体杀菌测试,菌体生长速率测定法(平皿法):
将一定量药剂溶解在适量丙酮内,然后用含有200μg/mL乳化剂水溶液稀释至所需浓度,然后各吸取1mL药液注入培养皿内,再分别加入9mL培养基,摇匀后制成50μg/mL的含药平板,以添加1mL灭菌水的平板做空白对照。用直径4mm的打孔器沿菌丝外缘切取菌盘,移至含药平板上。每处理重复三次。将培养皿放在24±1℃恒温培养箱内培养。48小时后调查各处理菌盘扩展直径,求平均值,与空白对照比较计算相对抑菌率。
Figure BSA0000198237830000112
表2 生物碱streptindole衍生物I-1~I-19的离体杀菌活性测试结果:
Figure BSA0000198237830000113
Figure BSA0000198237830000121
生物碱streptindole衍生物在测试浓度为50μg/mL的条件下对14种被测试菌都表现出广谱的抑制活性,具备极大的开发价值。
上述实施例中所涉及的原料和试剂均由商购或参考文献方法制备获得,化学反应工艺是本技术领域的技术人员所能掌握的。

Claims (5)

1.一种生物碱streptindole衍生物,其特征在于,所述生物碱streptindole衍生物为下述I-1~I-19结构式中的一种,
Figure FSB0000199545170000011
2.权利要求1中生物碱streptindole衍生物I-1的制备方法,其特征在于,吲哚(1)与醛2在乙腈中经单质碘催化缩合得到化合物3,化合物3与水合肼在甲苯中回流肼解得化合物4,最后以三乙胺为缚酸剂在二氯甲烷中与特戊酰氯反应得化合物I-1,
Figure FSB0000199545170000021
3.权利要求1中生物碱streptindole衍生物I-2~I-11的制备方法,其特征在于化合物4在二氯甲烷中与相应的异硫氰酸酯加成得衍生物I-2~I-11,式中R为衍生物I-2~I-11结构所示取代基,
Figure FSB0000199545170000022
4.权利要求1中生物碱streptindole衍生物I-12~I-19的制备方法,其特征在于,吲哚(1)与醛5在乙腈中经单质碘催化缩合得化合物6,然后在乙醇中与水合肼回流肼解得化合物7,最后在乙醇中与相应的醛回流缩合得衍生物I-12~I-19,式中R为衍生物I-12~I-19结构所示取代基,
Figure FSB0000199545170000023
5.权利要求1所述的生物碱streptindole衍生物I-1~I-19在防治烟草花叶病毒病中的应用。
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