CN1442417A - 茼蒿素类似物、合成方法及其用途 - Google Patents
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Abstract
本发明是一种具有不饱和侧链的二氧杂螺环化合物及其合成方法。是具有如下结构式的茼蒿素类化合物,其中环外双键可为顺式或反式;Ar=C2-14的不饱和烃基、R6=C1-14的烷基或R1;R7,R8=C1-14的烷基、烷氧基、C2-14的不饱和烃基或卤素,R9=卤素;R1=C2-14的不饱和烃基;R2,R3=NR10R11或SR12,其中R10,R11,R12=H、C1-14的烷基、R1,或NR10R11为含N的五到七员杂环;R4,R5=C1-14的烷基或R1;X=CH2、CH2CH2或CH2O,其中R13为C1-14的烷基或R1,所述的卤素可以是F、Cl或Br。该化合物具有明显的拒食活性。
Description
技术领域
本发明涉及茼蒿素类似物、合成方法及其用途,即具有不饱和侧链的二氧杂螺环化合物以及以路易斯酸为催化剂专一合成茼蒿素类化合物——具有不饱和侧链的氧杂螺环化合物的方法,以及该化合物作为农药的用途。
背景技术
据有关资料统计,世界范围内每年用于农药化学方面的投资超过了四十亿美元,而其中一半以上的费用用于杀虫剂,但每年仍有15%左右的农作物因病虫害而白白流失,由此造成的影响在发展中国家尤其严重。当今世界人口的增长与粮食紧缺的矛盾越来越突出,如何防止病虫害,增加农作物的产量是目前急需解决的问题。这个问题的解决只有依靠科技进步,当然不仅是农业科技的进步,还有化学领域的科技进步。当前农作物的防护手段主要依赖于广谱化学杀虫剂的应用,这些化合物尽管非常实用有效,可其存在的缺点同样显而易见;首先因为这些化合物在杀虫时很少具有选择性,常常在杀死害虫的同时,害虫的天敌也难逃厄运,而害虫在产生抗药性后,则需要加大杀虫剂的剂量才能达到灭害的目的,如此恶性循环的后果是生态环境的破坏。其次合成农药一般很难分解,也很难被农作物吸收代谢,残留在的农药长期滞留在农产品上,对人体、牲畜、环境造成了很大的危害。为了解决这些问题,根据自然界中各种植物向我们展示的多姿多彩的病虫害防治手段——昆虫拒食剂。
茼蒿又名蓬蒿,为菊科菊属植物,在江南地区为春秋两季常见蔬菜,因茼蒿有独特香味而免受昆虫侵袭。Z.H.Wu,J.C.Li,Y.Z.Chen,A.J.Yu,Z.R.Feng,J.Shen,Y.L. Wu,P.F.Guo,Y.L.Wang,Natural Product R&D公开了剖析茼蒿素精油成分而分离出的一种具有明显拒食活性的化合物——茼蒿素:1-Z和1-E,即一个结构独特的带有一个长链共轭炔烃支链的螺环缩酮烯醇醚化合物。可单纯从茼蒿中分离出茼蒿素活性成分是难以满足要求的,况且在分离过程中,其活性组分易变,试图通过合成类似化合物,进一步改进其活性,因此吴毓林等在ZL93112444.1“茼蒿素类新化合物”中提供了茼蒿素类新化合物,具有下列化学式A或B:
A呋喃式茼蒿素类似物 B螺环式茼蒿素类似物
该茼蒿素类化合物的合成方法系采用价廉易得的糠醛作原料,按Org.Syn.Coll.425中的方法制备呋喃丙烯酸,再用Raney镍还原得到呋喃丙酸,经氢化铝锂还原得呋喃丙醇,继与丁基锂作用得5-位锂化合物,在同一反应瓶中与不饱和醛反应得到。
吴毓林等在ZL97106696.5“一种茼蒿素类化合物的制备方法极其用途”中又提供了另一类新的茼蒿素类化合物,即具有不饱和侧链的二氧杂螺环化合物:并提供了制备该类化合物的几种合成方法:
(1)、呋喃丙醇或丁醇与丁基锂及不饱和醛或酮反应得得呋喃二醇化合物。
(2)、呋喃丙醇或丁醇用乙酰基保护得到乙酰化合物,经Vilsmier-Hack反应获2-甲醛的呋喃乙酰化合物,与炔基负离子反映后,再脱乙酰基得呋喃二醇化合物。
(3)、将上述(1)、(2)的二醇化合物在溶剂中和室温或回流温度下用质子酸、硅胶、离子交换树脂或路易斯酸催化脱水发生环化反应。
(4)、将(3)产物用Pa-C催化下通氢气。
可由于该方法中中间体-呋喃二醇化合物的合成须通过锂试剂反应获得,这样导致成本过高而难以工业化生产。为了降低成本,避免使用锂试剂,我们在此专利的基础上,通过探索,成功第以路易斯酸为催化剂专一性地合成了呋喃二醇化合物。吴毓林等有在专利ZL00127944.0提供了另一种具有不饱和侧链的氧杂螺环化合物,其分子通式为:
其中:呋喃丙醇或丁醇R=CmH2m+1,m=1-6、F、Cl、BrCH3COO、CH3O、C2H5、NO2、苯基、萘基;x=C、O;n=1-3;该发明的另一目的就是提供一种以路易斯酸为催化剂专一性合成茼蒿素类化合物——具有不饱和侧链的氧杂螺环化合物的方法,是通过如下方案实现的,即以
为原料,经乙酰化后,在路易斯酸催化下与相应的酰氯化合物发生傅-克反应,得到相应的5-位呋喃酮,然后还原得到相应的呋喃二醇化合物。再将此呋喃二醇化合物经环化反映后即得到具有不饱和侧链的氧杂螺环的茼蒿素类化合物。反应式如下:?
吴毓林等在
ZL97106696.5“一种茼蒿素类化合物的制备方法极其用途”中又提供了另一类新的茼蒿素类化合物,即B环经改造过成含N原子的茼蒿素类化合物:反应式如下:
该方法由简单易得的糠酸甲酯出发,与芳香酰氯发生Friedel-Crafts反应,得到芳酮糠酸甲酯,然后经硼氢化钠选择性还原,胺酰化反应得到含酰胺基的呋喃二醇,然后在酸性条件下关环得到一类新的B环经改造成含N原子的茼蒿素类似物。
发明内容
本发明的目的就是提供一种A环经修饰了的茼蒿素类似物。
本发明的另一目的是提供制备上述茼蒿素类新化合物的方法。
本发明的目的还提供这类化合物的用途。
本发明的茼蒿素类化合物具有如下结构式:结构式中环外双键可为顺式或反式;Ar=C2-14的不饱和烃基
,R6=C1-14的烷基或C2-14的不饱和烃基;R7,R8=C1-14的烷基、烷氧基、C2-14的不饱和烃基或卤素,R9=R1或卤素;R2,R3=NR10R11或SR12,其中R10,R11,R12=H、C1-14的烷基、C2-14不饱和烃基、或NR10R11为含N的五到七员杂环;X=CH2,CH2CH2,
;其中R13为C1-14的烷基或C2-14不饱和烃基,所述的卤素可以是F、Cl或Br。
本发明的的茼蒿素类化合物的制备方法,可以用下述两种方法(1)和(2)制得:(1)在有机溶剂中,HNR10R11,和
,丁基锂反应得到化合物,其中HNR10R11::丁基锂的摩尔比为1∶1~10∶1~10。有机溶剂以醚类溶剂为好。反应温度为-78℃至30℃,反应时间为2~10小时。其中Ar,R1,R10,R11,X如上所述。(2)在有机溶剂中,SR12,
和催化剂反应得到化合物,其中SR12:
:催化剂为1∶1~10∶1~10。
有机溶剂以非极性溶剂为好。温度为0℃至100℃,反应时间为2~10
小时,所述的催化剂为偶氮二异丁腈,三丁基锡烷,过氧二苯甲酰。
其中Ar,R1,R12,X如上所述。
以上所指的有机溶剂为甲醇,乙醇,异丙醇,叔丁醇,二氯甲烷,氯仿,1,2二氯乙烷,四氯化碳,乙醚,四氢呋喃,苯,甲苯,二甲苯,丙酮,丁酮。
本发明的方法成功地将A环进行了改造,该路线具有反应条件温和、简便而专一的特点,并可用于工业化生产,而且本发明的化合物具有明显的昆虫拒食活性,可以用于杀虫的农药。
具体实施方式
以下实施例有助于了解本发明,但不局限于本发明的内容。
实施例1
20mmol胺(吗啡啉)溶于15ml无水四氢呋喃(THF)中,干冰-丙酮浴冷却至-78℃,加入13.4ml正丁基锂(n-BuLi,1.6M)的正己环溶液,缓慢升至室温搅拌2小时,然后再次冷却至-78℃,加入溶于5ml无水THF的茼蒿素
溶液。-78℃下反应10小时后加入饱和碳酸氢钠溶液淬灭反应。过滤除去固体物,滤液用乙酸乙酯提取(10ml×3),合并有机层,饱和氯化钠溶液洗涤,无水硫酸钠干燥。滤去硫酸钠,减压脱除溶剂,柱色谱分离得纯品。1a,12%:1H NMR(300MHz,CDCl3,ppm):7.30~7.25(2H,m),7.18~7.08(3H,m),5.86(1H,s),4.08(1H,m),3.97(1H,m),3.73(4H,t,J=4.7Hz),3.05~2.97(2H,m),2.92(1H,m),2.85~2.78(2H,m),2.55(2H,m),2.24~2.11(3H,m),2.00~1.93(1H,m)。MS(m/z):301(100.0,M+),168(44.4),127(32.7),55(28.4),160(19.0),113(18.0),140(18.2),302(15.1)。IR(film,cm-1):2957,2860,2814,1681,1594,1494,1451,1431,1290,1175,1118,948,878,761,699.。元素分析C18H23NO3,计算值:C%,71.76,H%,7.64,N%,4.65,实测值:C%,71.55,H%,7.41,N%,4.52。1b 74%:1H NMR(300MHz,CDCl3,ppm):7.50(2H,m),7.27(2H,m),7.11(1H,m),5.22(1H,s),4.13(1H,m),4.04(1H,m),3.75(4H,t,J=4.7Hz),3.03(2H,m),2.78(3H,m),2.57(2H,m),2.25(3H,m),2.01(1H,m)。13C NMR(300MHz,CDCl3,ppm):152.78,136.54,127.96,124.61,116.29,98.40,77.43,77.00,76.58,68.55,66.94,66.12,51.88,34.81,31.44,30.68,23.79。MS(m/z):301(100.0,M+),168(45.4),127(30.8),55(29.2),160(19.9),113(19.6),140(18.2),302(15.1)。IR(film,cm-1):2959,2864,2816,1676,1596,1494,1451,1431,1290,1175,1118,948,878,761,699。元素分析C18H23NO3计算值:C%,71.76,H%,7.64,N%,4.65,实测值:C%,71.68,H%,7.51,N%,4.43。
实施例2同实施例1,所不同的是茼蒿素为
285%:1H NMR(300MHz,CDCl3,ppm):7.61(2H,d,J=7.8Hz),7.34~7.28(2H,m),7.13(1H,t,J=7.2Hz),5.29(1H,m),4.27(1H,m),3.96~3.70(9H,m)。MS(m/z):184(100.0),112(36.7),113(27.2),55(26.8),317(25.4,M+),41(20.1),156(17.2),56(14.7)。IR(film,cm-1):2987,2962,2854,1673,1596,1493,1450,1355,1190,1116,1058,927,888,807,751,693。元素分析C18H23NO4计算值:C%,68.14,H%,7.26,N%,4.42,实测值:C%,68.05,H%,7.47,N%,4.16。
实施例3同实施例1,所不同的是茼蒿素为
390%:1H NMR(300MHz,CDCl3,ppm):7.22(1H,d,J=1.5Hz),6.83(1H,dd,J=1.6Hz,J=8.1Hz),5.91(s,1H),5.30(1H,s),4.12(1H,m),4.02(1H,m),3.74(4H,t,J=4.7Hz),2.98(2H,m),2.76(3H,m),2.54(2H,m),2.27~1.98(3H,m),1.98(1H,m)。MS(m/z):345(100.0,M+),168(37.8),346(36.4),55(24.4),204(22.6),127(20.8),140(13.5),41(12.9)。IR(film,cm-1):2959,2856,2817,1679,1504,1486,1443,1335,1257,1190,1117,1039,956,934,873,822,756。元素分析C18H23NO4 Calcd.C%,66.09,H%,6.67,N%,4.05,实测值:C%,65.90,H%,657,N%,3.82。
实施例4同实施例1,所不同的是茼蒿素为
473%:1H NMR(300MHz,CDCl3,ppm):8.11(2H,d,J=9.0Hz),7.60(2H,d,J=9.0Hz),5.31(1H,s),4.24(1H,m),4.04(1H,m),3.68(4H,m),3.18(2H,m),2.88(3H,m),2.62~2.64(2H,m),2.20~2.09(4H,m)。MS(m/z):346(1.23,M+),169(100.0),113(31.5),170(11.2),168(8.2),55(3.5),83(3.3),41(3.18)。IR(film,cm-1):2853,2816,1651,1589,1509,1337,1116,952,921,862,752.。
实施例5
同实施例1,所不同的是茼蒿素为
,胺为
5a 11%:1H NMR(300MHz,CDCl3,ppm):7.32~7.27(2H,m),7.22~7.09(3H,m),6.02(1H,s),4.28(1H,m),3.95~3.68(5H,m),3.08~3.02(2H,m),2.75~2.49(3H,m),1.86~1.77(4H,m)。MS(m/z):168(100.0),97(89.8),301(49.1,M+),124(40.5),112(36.9),96(28.9),198(27.7),169(22.6)。IR(film,cm-1):3046,2965,2870,2797,1678,1600,1447,1230,1054,927,900,876,753.699。元素分析C18H23NO3计算值:C%,71.76,H%,7.64,N%,4.65,实测值:C%,71.86,H%,7.57,N%,4.46。5b 79%:1H NMR(300MHz,CDCl3,ppm):7.62(2H,d,J=1.3Hz),7.60~7.22(3H,m),7.14~7.08(1H,m),5.29(1H,s),4.28(1H,m),3.97~3.72(5H,m),3.06~3.01(2H,m),2.72~2.44(3H,m),1.88~1.75(4H,m)。MS(m/z):168(100.0),97(95.5),301(81.9,M+),124(42.5),112(38.3),96(34.2),198(28.3),98(26.4)。IR(film,cm-1):2996,2808,1678,1597,1496,1449,1363,1239,1047,930,900,808。元素分析C18H23NO3计算值:C%,71.76,H%,7.64,N%,4.65,实测值:C%,72.05,H%,7.65,N%,4.45。
实施例6
同实施例1,所不同的是茼蒿素为
,胺为
6a 9%:1H NMR(300MHz,CDCl3,ppm):6.83~6.61(3H,m),5.95(1H,s),5.94(2H,s),4.33~4.24(1H,m),3.96~3.68(5H,m),3.01(2H,m),2.74(2H,m),2.60~2.50(3H,m),1.85(4H,m)。MS(m/z):168(100.0),345(39.3,M+),162(30.4),97(27.1),124(22.5),96(22.1),346(18.9),220(13.7)。IR (film,cm-1):2811,1671,1496,1444,1257,1241,1167,1104,1032,928,890,855。元素分析C19H23NO5计算值:.C%,66.07,H%,6.71,N%,4.06,实测值:C%,66.23,H%,6.84,N%,4.31。75%:1H NMR(300MHz,CDCl3,ppm):7.31(1H,d,J=1.6Hz),6.96(1H,dd,J=1.6Hz,J=8.1Hz),6.75(1H,d,J=8.0Hz),5.94(2H,s),5.18(1H,s),4.26(1H,m),3.96~3.73(5H,m),3.05(1H,m),2.83(1H,m),2.74(2H,m),2.52(3H,m),1.86(4H,m)。MS(m/z):168(100.0),345(51.1,M+),162(28.1),97(24.4),124(21.1),96(20.7),346(20.3),220(12.5)。IR(film,cm-1):2965,2787,1683,1486,1252,1058,967,901,873,813。元素分析C19H23NO5计算值:.C%,66.08,H%,6.67,N%,4.05,实测值:C%,65.89,H%,6.67,N%,3.90。
实施例7
同实施例1,所不同的是茼蒿素为
,胺为NH2Bu。7:56%:1H NMR(300MHz,CDCl3,ppm):7.24(1H,d,J=1.7Hz),6.84(1H,dd,J=1.7Hz,J=8.3Hz),6.73(1H,dd,J=1.9Hz,8.0Hz),5.58(2H,s),5.15(1H,s),4.14(1H,m),3.99(1H,m),3.31(1H,m),2.96(1H,m),2.92~2.54(3H,m),2.20(3H,m),2.02(1H,m),1.52(2H,m),1.38(2H,m),0.93(3H,t,J=7.2Hz)。MS(m/z):331(100.0,M+),98(90.9),154(79.5),204(48.7),332(44.7),162(36.6),127(35.3),134(32.8)。IR(film,cm-1):2958,2875,1679,1504,1486,1442,1257,1040,958,934,869,819。
实施例8
同实施例1,所不同的是茼蒿素为
8,93%:1H NMR(300MHz,CDCl3,ppm):7.30(2H,d,J=2.1Hz),6.98(2H,d,J=8.1Hz),5.09(1H,s),4.02(1H,m),3.91(1H,m),3.65(4H,t,J=4.7Hz),2.90(2H,m),2.68(3H,m),2.45(2H,m),2.19(3H,s),2.13(3H,m),1.89(1H,m)。MS(m/z):315(100.0,M+),168(78.1),127(70.1),174(60.1),55(31.6),140(28.7),113(28.2),316(21.88,M+1)。IR(film,cm-1):2887,2870,1674,1500,1485,1432,1254,1044,957,924,865,806。
实施例9
同实施例1,所不同的是茼蒿素为
9:81%;1H NMR(300MHz,CDCl3,ppm):7.37(3H,m),7.25(2H,m),1.94(1H,s),4.02(1H,m),3.91(1H,m),3.67(4H,t,J=9.7Hz),2.94(2H,m),2.75(3H,m),2.51(2H,m),2.21(3H,s),2.19(3H,s),2.13(3H,m),1.93(1H,m)。MS(m/z):215(100.0),155(30.8),157(30.7),216(28.0),127(23.3),171(19.3),340(17.3),128(17.1)。IR(film,cm-1):2958,2891,2854,1693,1599,1506,1453,1367,1174,1118,1025,954,876,764,697。
实施例10
同实施例1,所不同的是茼蒿素为
,胺为
10a:12%;1H NMR(300MHz,CDCl3,ppm):7.32~7.27(2H,m),7.22~7.09(3H,m),6.02(1H,s),4.28(1H,m),3.95~3.68(5H,m),3.08~3.02(2H,m),2.75~2.49(3H,m),1.86~1.77(4H,m)。MS(m/z):168(100.0),97(89.8),301(49.1,M+),124(40.5),112(36.9),96(28.9),198(27.7),169(22.6)。IR(film,cm-1):3046,2965,2870,2797,1678,1600,1447,1230,1054,927,900,876,753.699。元素分析C18H23NO3计算值:C%,71.76,H%,7.64,N%,4.65,实测值:C%,71.86,H%,7.57,N%,4.46。10b:75%;1H NMR(300MHz,CDCl3,ppm):7.62(2H,d,J=1.3Hz),7.60~7.22(3H,m),7.14~7.08(1H,m),5.29(1H,s),4.28(1H,m),3.97~3.72(5H,m),3.06~3.01(2H,m),2.72~2.44(3H,m),1.88~1.75(4H,m).。MS(m/z):168(100.0),97(95.5),301(81.9,M+),124(42.5),112(38.3),96(34.2),198(28.3),98(26.4)。IR(film,cm-1):2996,2808,1678,1597,1496,1449,1363,1239,1047,930,900,808,698。元素分析C18H23NO3计算值:C%,71.76,H%,7.64,N%,4.65,实测值:C%,72.05,H%,7.65,N%,4.45。
实施例11
同实施例1,所不同的是茼蒿素为
,胺为
11a:9%;1H NMR:7.09(4H,dd,J=8.3Hz,J=13.9Hz),5.84(1H,s),4.10(2H,m),2.7(4H,m),2.37(3H,m),1.99(1H,m),1.86(4H,m)。IR(film,cm-1):2961,2788,1668,1516,1457,1158,1077,942,847,515。MS(m/z):97(100.0),111(85.2),152(84.1),174(50.3),55(56.9),124(46.7),299(46.7,M+),96(45.0)。11b:77%;1H NMR:7.41(2H,d,J=7.8Hz,),7.10(2H,d,J=7.8Hz,)5.19(1H,s),4.12(2H,m),3.15~2.84(3H,m),2.69(4H,m),2.31(3H,s),2.31~2.19(3H,m),2.04(1H,m),1.87(4H,m)。IR(film,cm-1):2966,2873,1674,1512,1361,1170,942,829,705。MS(m/z):299(M+,37.5),97(100.0),111(71.9),152(67.9),174(50.3),55(61.0),96(47.6),41(44.0),42(42.9),69(40.7)。
实施例12
同实施例1,所不同的是茼蒿素为
,胺为
12:90%;IR(film,cm-1):2960,2852,1679,1509,1243,1176,1116,1029,952,834,812。MS(m/z):55(100.0),168(87.9),127(75.0),190(71.5),331(57.5),113(36.2),42(35.8),91(35.6)。
实施例13
同实施例1,所不同的是茼蒿素为
,胺为
13:88%;1H NMR(300MHz,CDCl3,ppm):7.45(2H,d,J=9.1Hz,6.84(1H,d,8.8Hz),5.13(1H,s),4.09(2H,m),3.78(3H,s),3.04(1H,m),2.88~2.77(2H,m),2.60(3H,s),2.21(3H,m),1.98(1H,m),1.83(4H,m)。IR(film,cm-1),2961,1874,2805,1668,1510,1461,1359,1247,1175,1037,946,835.707。MS(m/z):111(100.0),152(97.9),97(77.2),190(72.5),315(54.8),124(51.7),96(35.9),55(35.9)。
实施例14
同实施例1,所不同的是茼蒿素为
,胺为
14:78%;1H NMR(300MHz,CDCl3,ppm):7.39(2H,d,J=8.5Hz),7.08(2H,d,J=8.7Hz),5.17(1H,s),4.16~4.01(2H,m),3.06~2.93(2H,m),2.81~2.64(3H,m),2.52~2.45(2H,m),2.33(3H,s),228~2.13(3H,m),2.02~1.95(1H,m),1.62(4H,m),1.49~1.38(2H,m)。MS(m/z):313(100.0,M+),125(87.7),166(84.5),111(83.5),55(66.5),174(52.0),41(50.8),42(45.1)。IR(film,cm-1),2933,2854,2804,2748,1678,1512,1453,1357,1174,1116,953,926,831,757。
实施例15
同实施例1,所不同的是茼蒿素为
,胺为
15:83%:1H NMR(300MHz,CDCl3,ppm):8.19(2H,d,J=9.0Hz),7.64(2H,d,J=9.0Hz),5.21(1H,s),4.23(1H,m),4.00(1H,m),3.78(4H,m),3.23(2H,m),2.78(3H,m),2.56~2.64(2H,m),2.10~2.04(4H,m)。MS(m/z):319(1.23,M+),165(100.0),123(31.5),176(11.2),164(8.2),55(3.5),82(3.3),41(3.18)。IR(film,cm-1):2863,2810,1647,1577,1500,1324,1146,942,927,851,744。
实施例16
同实施例1,所不同的是茼蒿素为
,胺为PhNH2,16:63%,1H NMR(300MHz,CDCl3,ppm):7.31~7.07(10H,m),5.32(1H,s),4.11(1H,m),43.95(1H,m),3.66(4H,m),3.12(2H,m),2.68(3H,m),2.43~2.35(2H,m),2.01~1.95(4H,m)。MS(m/z):307(14.51,M+),158(100.0),117(67.5),55(3.5),82(3.3),41(3.18)。IR(film,cm-1):2893,2842,1631,1546,1501,1322,1125,944,902,812,733。
实施例17
同实施例1,所不同的是茼蒿素为
,胺为
17:85%;1H NMR(300MHz,CDCl3,ppm):7.45~7.23(5H,m),5.13(1H,s),4.09(2H,m),3.78(3H,s),3.04(1H,m),2.88~2.77(2H,m),2.60(3H,s),2.21(3H,m),2.14(3H,s),1.98(1H,m),1.83(4H,m)。IR(film,cm-1),2954,1868,2805,1659,1503,1444,1321,1232,1160,1022,921,814,700,。MS(m/z):179(100.0),166(97.9),98(77.2),190(72.5),334(52.8),110(58.7),90(35.8),55(34.9)。
实施例18
同实施例1,所不同的是茼蒿素为
,胺为
18:89%:1H NMR(300MHz,CDCl3,ppm):8.19(2H,d,J=9.1Hz),7.89(1H,d,J=9.1Hz),5.34(1H,s),4.19(1H,m),4.03(1H,m),3.75(4H,m),3.21(2H,m),2.69(3H,m),2.16~2.60(2H,m),2.14~2.07(4H,m)。MS(m/z):301(8.98,M+),163(100.0),129(32.5),174(19.2),165(9.2),54(3.5),86(3.1),44(3.70)。IR(film,cm-1):2943,2815,1654,1534,1501,1377,1158,921,914,822,734。
实施例19
同实施例1,所不同的是茼蒿素为
,胺为
19:81%:1H NMR(300MHz,CDCl3,ppm):7.36~7.11(5H,m),5.31(1H,s),4.14(1H,m),4.00(1H,m),3.73(4H,m),3.19(2H,m),2.87(4H,m),2.65(3H,m),1.34(3H,t,8.7Hz)。MS(m/z):358(10.74,M+),195(100.0),154(38.5),190(19.7),187(9.4),77(6.5),90(7.1),54(3.7)。IR(film,cm-1):2984,2843,1665,1563,1545,1323,1100,976,934,877,756。
实施例20
同实施例2,所不同的是茼蒿素为
,胺为
20:874%:1H NMR(300MHz,CDCl3,ppm):7.35~7.02(5H,m),5.31(1H,s),4.23(1H,m),4.06(1H,m),3.82(4H,m),3.23(2H,m),2.74(3H,m),2.54(3H,m),1.34(4H,m)。MS(m/z):370(15.67,M+),189(100.0),167(37.0),165(16.4),183(7.4),75(6.3),88(5.1),34(3.1)。IR(film,cm-1):2994,2854,1667,1534,1523,1378,1106,945,923,876,741。
实施例21
溶于30ml无水苯中,加入20mmol苯甲硫醇和催化量的偶氮耳异丁腈(1mmol),加热搅拌回流,10小时,减压脱除溶剂,快速柱色谱分离得纯品
21:56%,1H NMR(300MHz,CDCl3,ppm):7.34~7.11(10H,m),5.31(1H,s),4.22(2H,s)4.10(1H,m),4.02(1H,m),3.11(H,m),2.42(2H,m),2.07(2H,t,J=6.2Hz),1.70(2H,m)。MS(m/z):338(12.1,M+),231(100.0),156(34.0),158(21.7),165(5.4),43(5.3),76(4.9),34(3.2)。IR(film,cm-1):2978,2874,1663,1522,15201,1345,1100,988,913,843,741。
实施例22所不同的是,茼蒿素为
22:52%,1H NMR(300MHz,CDCl3,ppm):7.56~7.43(4H,m),5.22(1H,s),4.18(2H,s)4.00(1H,m),3.95(1H,m),3.10(H,m),2.33(2H,m),2.12(2H,t,J=6.6Hz),1.73(2H,m)。MS(m/z):356(16.1,M+),256(100.0),144(23.0),177(20.5),145(12.7),67(3.3),67(4.8),65(3.0)。IR(film,cm-1):2967,2857,1643,1534,1401,1345,1145,987,916,846,742。生物活性:上述化合物I在500PPm时对大菜粉蝶的拒食活性都达100%。
Claims (11)
2.如权利要求1所述的茼蒿素类化合物,其特征是所述的卤素是F、Cl或Br。
3.如权利要求1所述的茼蒿素类化合物,其特征是具有如下结构式:,其中X的含义同权利要求1所述
6.如权利要求1所述的茼蒿素类化合物,其特征是具有如下结构式:,其中Ar、R13的含义同权利要求1所述。
7.如权利要求1所述的茼蒿素类化合物,其特征是具有如下结构式:或
,其中R6、R7、R8、R9的含义同权利要求1所述。
8.如权利要求1所述的茼蒿素类化合物,其特征是具有如下结构式:,其中X的含义同权利要求1所述。
10.如权利要求7所述的茼蒿素类化合物的制备方法,其特征在于方法(1)中所述的有机溶剂是醚类溶剂;方法(2)中所述的有机溶剂是非极性溶剂。
11.如权利要求1所述的茼蒿素类化合物的用途,其特征在于用于昆虫拒食的杀虫农药。
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