No.2 李少博等:新型1,5.二苯基.1,4.戊二烯一3.酮肟酯类化合物的合成及其抑菌活性研究 313 129.8,127.8,124.4,124.3,124.3,1 16.0,1 15.9;IR(KBr) v:3219.2,3159.4,3020.5,1620.2,1573.9 cm一1.Ana1. calcd for C17H13F2N0:C 71.57,H 4 59,N 4.91;found C 71.56,H 4.61,N 4.95. 1.3 目标化合物1,5-二苯基-1,4-戊二烯-3-酮肟酯化合 物3的合成 依次向50 mL三口瓶中加入2.0 mmol化合物2,5 mL CHC13,2.3 mmol吡啶和5 mL CHC13溶液,冰浴下搅 拌,反应液温度降至3℃时开始滴加2.0 mmol酰氯和5 mL CHC1 溶液,滴加过程中使反应液温度恒定在0~5 ℃,10 min滴加完,继续反应3.0 h,TLC跟踪反应结束. 用10%NaHCO3洗至pH 8左右,再25 mL×4水洗,分 液,有机相用无水Na2SO4干燥,旋转蒸发除去氯仿,得 到黄色粘稠状液体,用硅胶柱层析分离,得到目标化合 物3a ̄3o. ‘ 化合物3a:白色固体,产率67.5%,m.P.110~111 ℃; H MR(CDC13,500 MHz) :8.13(d,.,=1 1.2 Hz, 2H,2×ArCH=),7.60~7.34(m,15H,ArH),7.21(d,.,= 16.6 Hz,IH,=CH),7.10(d,.,=16.6 Hz,1H,=CH);”C NMR(CDC13,125 MHz) :163.9,161.7,140.4,139.4, 135.9,135.5,133.5,129.9,129.8,129.1,129.0,128.8, 127.7,127.5,121.1,1 17.0;IR(KBr)v:3061.0,3026.3, 1745.6,1637.6,1618.3 cm-。.Ana1.calcd for C24H19NO2: C 81.56,H 5.42,N 3.96;found C 81.22,H 5.65,N 3.90. 化合物3b:白色固体,产率54.4%,m.P.135~137 ℃; H NMR(CDC13,500 MHz) :7.56~7.10(m,16H, 3×ArH+2×ArCH=+2×CHC=N),3.92(s,3H, OCH3),3.85(s,6H,2×OCH3);”C NMR(CDC13,1 25 MHz) :163.3,161.9,153.1,142.5,139.9,139.6,135.7, 135.4,129.9,129.4,129.0,128.9,127.5,127.3,123.8, 121.2,1 17.1,106.8,60.0,56.1;IR(KBr)y-3049.5, 1741.7,1635.3,1585.5 cm-。.Ana1.calcd for C27H25N05: C 73.12,H 5.68,N 3.16;found C 73.02,H 5.88,N 2.98. 化合物3c:白色固体,产率58.1%,m.P.145~146 ℃; H NMR(CDC13,500 MHz) :7.63~7.19(m,12H, 3×ArH+2×ArCH=),7.11(d,.,=15.0 Hz,2H,2×CH— C=N),3.93(s,3H,0CH3),3.89(s,6H,2×0CH3);”C NMR(CDC13,125 MHz) :163.2,162.2,161.9,160.1, 159.9,153.1,142.6,133.2,132.1,131.2,130.8,128.9, 128.1,124.6,123.7,123.3,119.8,ll6_3,116.0,61.0,56.1; IR(KBr)v:3010.9。1753.3,1633.1,1591.3 cm-。.Ana1. calcd for C27H23F2NO5:C 67.63,H 4.84,N 2.92;found C 67.52,H 4.77,N 3.00. 化合物3d:白色固体,产率44.5%,m.P.60 ̄61℃: H NMR(CDC13,500 MHz) :7.55~7.34(m,10H,ArH), 7_31(d,.,:16.1 Hz,1H,A H=),7.24(d,.,=14.9 Hz, 1H,A H:),7.14(d,.,:16.6 Hz,IH,=CH),7.01(d, .,=16.0 Hz,IH,=CH),2.52(t,J=6.0 Hz,2H,CH2), 1.75(s,2H,CH2),1_39(s,2H,CH2),1.31(s,14H,(CH2)7), 0.87(t,J=6.0 Hz,3H,CH3);”C NMR(CDC13,125 MHz) :171.2,160.7,140.0,139.0,135.9,135.5,129.9,129.3, 129.1,128.9,127.7,127.5,121.0,ll7.1,33.2,32.0,29.8, 29.7,29.6,29.5,29.4,29_3,25.1,22.8,14.2;IR(KBr)v: 3059.1,3026.3,1764.9,1635.6(C=N),1577.8 cm一1. Ana1.calcd for C29H37N02"C 80.70,H 8.64,N 3.25,found C 81.04,H 8.46,N 2.83. 化合物3e:白色固体,产率76.0%,m.P.36 ̄38℃; H NMR(CDC13,500 MHz) :7.63~7.29(m,8H,2× ArH),7.20(t,.,=7.5 Hz,1H,A H=),7.17(t,J=7.5 Hz, 1H,A H:),7.10(dd,.,=16.00,5.15 Hz,2H,2×CH— C=N),2.52(s,2H,C0CH2),1.75(s,2H,CH2),1.40(s, 2H,CH2),1.30(s,14H,(CH2)7),0.88(t,J=6.5 Hz,3H, CH3);”C NMR(CDCI3,125 MHz) :171.1,162.0,161.9, 160.5,159.9,132.6,128.1,124.5,124.5,124.4,124.4, ll9.1,ll9.0,ll6.1,31.9,29.6,29.5,29.34,22.7;IR(KBr) v:3063.0,3039.8,1768.7。1635.6,1598.0 cm-。.Ana1. calcd for C29H35F2N02 7 C 74.49,H 7.54,N 3.00;found C 74.39,H 7.46,N 2.85. 化合物3 淡黄色粘稠液体,产率49.5%; H NMR (CDC13,500 MHz) :7.56~7.72(m,12H,2×ArH+2× ArCH=),7.14(d,.,=16.6 Hz,IH,CHC=N),7.01(d, .,=16.1 Hz,IH,CHC=N),2.52(s,2H,COCH2),1.75(s, 2H,CH2),1.3 1(s,6H,(CH2)3),o.89(t,.,=6.o Hz,3H, CH3);”C NMR(CDC13,125 MHz) :171.2,160.7,140.0, 139.0,135.9,135.5,129.9,129.0,128.9,127.7,127.5, 121.0,ll7.1,33.2,31.6,29.8,28.9,25.0,22.6;IR(KBr)v: 3059.1,3024.4,1768.7,1633.7,1575.8 cm-。.Ana1.calcd ofr C24H27N02"C 79.74,H 7.53,N 3.87;found C 79.51,H 7.63.N 3.66. 化合物3g:白色固体,产率66.3%,m.P.72 ̄74℃; H NMR(CDC13,500 MHz) :7.60(s,2H,2×A H=), 7.45(d,.,:16.6 Hz,IH,=CH),7.37~7.07(m,9H,2× ArH+=CH),2.53(t,J=6.0 Hz,2H,CH2),1.75(s,2H, CH2),1.4 1(s,2H,CH2),1.32(s,4H,CHzCH2),0.89(t,.,: 6.0 Hz,3H,CH3);”C NMR(CDC13,125 MHz) :171.1, 161.9,160.6,160.1,132.7,131.7,131.3,130.7,128.2, 124.5,123.9,123.5,123.3,ll9.1,ll6.3,ll6.0,33.2,31.5, 28.9,25.0,22.6,14.1;IR(KBr)y-3057.2,1768.7,1633.7, 1584.5 cm-。.Ana1.calcd for C24H25F2N02:C 72.53.H 6.34,N 3.52;found C 72_38,H 6.44。N 3.52. 维普资讯 http://www.cqvip.com 314 有机化学 VlD1.28.20o8 化合物3h:白色固体,产率40.9%,m.P.102~104 ℃; H NMR(CDCl3,500 MHz) :7.90(d, 一16.0 Hz, 1H,PhCH=CCO),7.60~7.30(m,17H,3×ArH+ArC— H=+=CH),7.18(d, =16.6 Hz,1H,ARCH=),7.07(d, =16.1 Hz,1H,=CHCO),6.63(d, =16.0 Hz,1H, =CH); C NMR(CDC13,125 MHz) :164.6,161.0, 146.5,140.1,139.2,135.7,134.3,130.7,129.8,129.3, 128.9,128.3,127.6,127.4,121.1,1l7.0,115.6;IR(1 r) v:3052.3,3022.5,1735.9,1635.6,1589.3 cm一1.Ana1. calcd for C26H21NO2:C 82.30,H 5.58,N 3.69;found C 82.45.H 5.33.N 3.51. 化合物3i:白色固体,产率75.0%,m.P.64 ̄66℃; H NMR(CDC13,5o0 MHz) :7.60(s,2H,2×ARCH=), 7.45(d, 一16.6 Hz,1H,一CH),7.39~7.08(m,9H,2× ArH+=CH),2.25(s,3H,CH3);”C NMR(CDC13,125 MHz) :168.5,162.0,161.9,160.4,160.0,159.9,132.7, 131.7,131.3,130.6,128.1,124.5,123.7,123.4,123.1, 118.9,116.2,1l6.0,19.8;IR(KBr)v:3053.3,1770.7, 1633.7,1589.4 cm一1.Ana1.calcd for C19H15F2N02:C 69.72,H 4.62,N 4.28;found C 69.89,H 4.77,N 4.18. 化合物3j:白色固体,产率43.8%,m.P.136~137 ℃; H NMR(CDCl3,500 MHz) :9-34(s,1H,PyH),8.85 (d, =1.75 Hz,1H,PyH),8.42(d, =8.00 Hz,1H,PyH), 7.62(t,J=6.3 Hz,2H,2×ArCH=),7.53(d,I,=16.6 Hz, 1H,=CH),7.42~7.10(m,10H,ArFH+=CH+PyH); ”C NMR(CDC13,125 MHz) :162.4,162.1,161.9,160.1, 153.9,150.7,137.4,133.6,132.5,131.4,130.9,128.5, 128.3,125.2,124.7,124.5,123.6,123.2,122.9,1l8.9, ll6.3,1l6.1:IR(1 r)v:3072.6,3037.9,1749.4,1637.6, 1587.4 cm一1.Ana1.calcd for C23Hl6F2N202:C 70.76,H 4.13,N 7.18:found C 70.64,H 4.22,N 7.20. 化合物3k:白色固体,产率53.6%,m.P.96 ̄98℃; H NMR(CDCI3,500 MHz) :7.61~7.46(m,4H,ArH), 7.39~7.07 fm,8H,ArH+2×ArCH=+2×:CH),6.25 (s,2H,CH:CH),5.96(d,J=14.9 Hz,2H,CHCHMe), 1.90(s,3H,CH3); C NMR(CDC13,125 MHz) :164.8, 162.0,160.7,160.0,147.1,141.0,132.7,131.7,131.2, 130.7,129.9,128.2,124.6,123.9,123.6,1l9-3,1l6-3, 1l6.1,18.9;IR(1 r)v:3059.1,3010.9,1743.7,1643.4, 1614.4 cm一1.Ana1.calcd for C23H19F2NO,:C 72.81.H 5.05。N 3.69;found C 72.86,H 5.16,N 3.72. 化合物3l:白色固体,产率79.8%,m.P.48~50℃; H NMR(CDCl3,500 MHz) :7.60(s,2H,2×ARCH=), 7.45(d,J一16.60 Hz,1H,一CH),7-39~7.07(m,9H,2× ArH+=CH),2.53(t,J=7.0 Hz,2H,CH2),1.75(s,2H, CH2),1.39(s,2H,CH2),1.28(s,8H,(CH2)4),0.87(t, = 6.0 Hz,3H,CH3);”C NMR(CDC13,125 MHz) :171.1, 161.9,160.6,159.9,132.7,131.8,131.2,130.7,128.2, 124.5,123.9,123.5,123.4,1l9.1,1l6.3,116.0,33.2,31.9, 29_3,29_3,29.2,25.0,22.7,14.2;IR(KBr)v:3057.2, 1776.4,1635.6,1577.8 cm~.Ana1.calcd for C26H29F2 NO2:C 73.39,H 6.87,N 3.29;found C 73.31,H 6.75,N 3.34. 化合物3m:白色固体,产率74.5%,m.P.1l5~1l7 ℃; H NMR(CDCl3,5o0 MHz) :7.89(d, =16.0 Hz, 1H,ARCH=),7.67~7.58(m,4H,ArH),7.48(d, =16.6 Hz,1H,A H:),7.42~7.07(m,12H,2×ArH+2 CH=+=CHC=N),6.62(d, 一16.0 FIz,1H,=CHC0); ”C NMR(CDCl3,125 MHz) :164.5,161.0,146.7,130.8, 129.0,128.4,128.3,128.2,124.6,116.2,1l5.5;IR(KBr) v:3057.2,3026.3,1743.7,1633.7,1577.8 cm一1.Ana1. calcd for C26I-Il9F2NO2:C 75.17,H 4.61,N 3.37;found C 75.00,H 4.50,N 3.44. 化合物3n:白色固体,产率49.2%,m.P.86 ̄88℃: H NMR(CDCl3,500 MHz) :7.66(t,J=6.3 Hz,1H, ARCH=),7.58(t, =8.0 Hz,1H,ARCH=),7.44(d, = 16.05 Hz,1H,=CH),7.38~7.07(m,8H,2×ArH),7.00 (d, 一16.0 Hz,1H,CH=),1.40(t, =16.0 Hz,3H,CHs); ”C NMR(CDCl3,125 MHz) :162.1,160.5,160.1,160.0, 153.8,132.8,131.9,131.4,130.7,128.2,124.5,123.8, 123.4,122.9,1l8.6,116.3,116.1,65.0,14。4;IR(KBr)v: 3063.0.1784.2,1637.6,1570.4 cm一1.Ana1.calcd for C19H15F2NO3:C 66.47,H 4.40,N 4.08;found C 66.20,H 4-30.N4.07. 化合物3o:白色固体,产率85-2%,n1.P.87 ̄89℃; H NMR(CDCl3,500 MHz) :7.70(t,J=7.4 Hz,1H, ArCH=),7.58(t, =7.5 Hz,1H,ARCH=),7.47~7.10 (m,8H,2×ArH),7.10(d, =16.0 Hz,2H,2×=CH), 7.00(d, =16.0 Hz,1H,CH=),6.49(s,1H,NH),2.98(s, 3H,CH3) ”C NMR(CDCI3,125 MHz) :162.0,160.0, 157.5,155.9,132.4,131.5,131.0,130.8,128.3,127.9, 124.6,123.7,123.4,122.6,118.6,1l6.2,116.1,27.8; (KBr)v:3425.6,3338.8,3061.0,1728.2,1635.6,1577.8 cm-。.Ana1.calcd for C19H16F2N202:C 66.66,H 4.71,N 8.18:found C 66.89,H 4.79,N 8.18. 1.4抑菌活性的测定 采用生长速率法[ 用含毒马铃薯琼脂培养基(PDA) 对目标化合物进行了小麦赤霉病菌(G.zeae)、辣椒枯萎 病菌( oxysporum)、苹果腐烂病菌(C mandshurica)抑茵 活性的测定,普筛浓度为50 mg/L;采用PDA培养基, 维普资讯 http://www.cqvip.com No.2 李少博等:新型1,5一二苯基一1,4一戊二烯一3一酮肟酯类化合物的合成及其抑菌活性研究 3 l5 分别量取90 mL培养基分装在200 mL三角瓶中灭菌后 表1化合物3对小麦赤霉、辣椒枯萎、苹果腐烂的抑菌活性 Table 1 Inhibition effect of compounds 3 to Fusarium 备用.分别称取各种化合物50和5 mg于10 mL容量瓶 中,并用一定量的溶剂溶解,然后用含0.5%Tween 20 的灭菌水补足10 mL,加入90 mL PDA培养基(40 ̄50 ℃)中,充分摇匀,终浓度为50 mg・L ,将其倒入直径9 cm的灭菌后的培养皿中,每个浓度设3次重复,以恶霉 灵为对照药剂,加入等量的溶剂为空白对照.沿培养的 新鲜病原菌菌落边缘3~4 mill处打取直径为0.4 cm的 菌饼,反向移接到平板中央,置于27℃培养箱中培养, 待对照长到约培养皿直径的三分之二时,采用十字交叉 法测量菌落直径,以其平均数代表菌落的大小,抑菌率 的计算公式如下: //%=【(C一 /(C一0.4)】×100 ,为抑制率,c为空白直径, 为处理直径. 2结果与讨论 2.1合成方法的讨论 2.1.1化合物2的合成 以化合物2a为例,我们选用不同缚酸剂、反应温度 和反应时间进行条件实验.结果表明,选用K2C03、 NaOH作缚酸剂,在室温下反应5.0 h,TLC跟踪反应进 程,没有产物生成;同样反应条件下,采用吡啶作缚酸 剂.目标产物的收率为80.3%.在回流条件下,使用上 述三种缚酸剂,副产物增加,产物成份复杂. 2.1.2化合物3的合成 以化合物3a为例,我们选用不同缚酸剂、反应温度 和反应时间对反应进行了考察.结果表明,选用固体 K2CO3和固体KHCO3作缚酸剂,它们与反应体系形成 非均相体系,使得这两种缚酸剂不能充分作用,反应不 完全;以吡啶为缚酸剂,控制反应温度在0~5℃,用 TLC跟踪反应[GF254硅胶板,’/(乙酸乙酯):’/(石油醚, 60 ̄90℃)=1:3】,反应时间3.0 h,反应原料已经完全 消失,收率达67.5%;大于3.0 h,收率没有明显的提高. 与反应温度在0~5℃相比,反应温度控制在室温下(25 ℃),收率下降5%~1 1%. 2.2化合物的抑菌活性 按1.4生测方法测定目标化合物对小麦赤霉、辣椒 枯萎、苹果腐烂三种病菌的抑菌活性,测试结果(表1)表 明,在药剂浓度为50mg・L 时,化合物3i和30对小麦 赤霉病菌、辣椒枯萎病菌、苹果腐烂病菌抑制率为 42% ̄53%,与对照药剂抑制活性相当,其它目标化合 物3a ̄3h和3j~3n的抑制率均低于30%,低于对照药 剂恶霉灵. graminearum,Cytospora mandshurica and Fusarium oxysporum References 1 Ruby,J.A.;Sukumaran,K.;Girija,K.;Rao,M.N.A.; 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