CN111533749B - 一类苯并唑类-炔基-Tröger’s Base衍生物及其合成方法与应用 - Google Patents

一类苯并唑类-炔基-Tröger’s Base衍生物及其合成方法与应用 Download PDF

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CN111533749B
CN111533749B CN202010432499.9A CN202010432499A CN111533749B CN 111533749 B CN111533749 B CN 111533749B CN 202010432499 A CN202010432499 A CN 202010432499A CN 111533749 B CN111533749 B CN 111533749B
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梁燕妮
苑睿
窦鹏飞
宋仅星
宛瑜
吴翚
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Abstract

一类苯并唑类‑炔基‑
Figure DDA0002501068100000012
Base衍生物,其结构式如下式11或12所示,其由对碘苯胺、多聚甲醛、4‑乙炔基苯甲醛、1,4‑二氧六环或乙二酮衍生物通过缩合反应制得。合成工艺所需反应条件温和、反应时间短、产率高。本发明的苯并唑类‑炔基‑
Figure DDA0002501068100000013
Base衍生物荧光为蓝色发光,具有明显的聚集诱导发光,其中部分化合物对Fe3+具有识别能力,部分化合物对真菌标准株烟曲霉有较好的抑制效果。

Description

一类苯并唑类-炔基-Tröger's Base衍生物及其合成方法与 应用
技术领域
本发明属于化学合成领域,具体涉及一类苯并唑类-炔基-
Figure BDA0002501068080000013
Base衍生物及其合成方法与应用。
背景技术
金属离子在生命科学、环境科学等领域均具有极其重要的作用,因此其高灵敏度识别就显得尤为重要。高效离子识别的关键是识别分子的合理设计和合成。
苯并唑类化合物具有特殊的稠环共轭结构和良好的分子内电荷转移能力,使其具有许多优良的性能,在发光材料、OLED、抗菌抗肿瘤等诸多科学领域均具有广泛的应用。苯并唑类化合物具有较强的吸电子能力,能增强检测离子和探针分子之间的相互作用,选择性好,灵敏度高,热稳定性好,是一种结构比较稳定、性能比较优越的新型荧光材料和金属离子荧光探针。更为重要的是该类化合物易于进行结构修饰,可根据需求引入合适基团,调节整体分子结构,使其表现出不同的理化性质。
碳碳三键具有较好的电子传递能力。本发明基于苯并唑类的结构优势,结合TB独特的空间结构,在二者中间引入乙炔基,合成得到了一系列新型苯并唑-炔基-TB类化合物。
发明内容
本发明的目的在于,以对碘苯胺、多聚甲醛、4-乙炔基苯甲醛、1,4-二氧六环或二乙酮衍生物等原料通过缩合反应制得了一类具有聚集诱导发光、具有抗真菌活性、可用于金属离子识别的苯并唑类-炔基-
Figure BDA0002501068080000014
Base衍生物。
具体而言,本发明提供了一类苯并唑类-炔基-
Figure BDA0002501068080000015
Base衍生物,其结构式为下式之一,
Figure BDA0002501068080000012
Figure BDA0002501068080000021
Figure BDA0002501068080000031
本发明还提供了上述苯并唑类-炔基-
Figure BDA0002501068080000032
Base衍生物的制备方法,包括:
S1:制备下式所示中间体2,
Figure BDA0002501068080000033
S2:制备下式所示中间体4
Figure BDA0002501068080000034
S3:苯并唑类-炔基-
Figure BDA0002501068080000035
Base衍生物11或12的合成
(1)苯并唑类-炔基-
Figure BDA0002501068080000036
Base衍生物11的合成
将中间体4、取代邻苯二胺和1,4-二氧六环置于干燥的茄型瓶中,回流一段,反应结束后冷却至室温,旋干溶剂,粗产物柱层析分离纯化,得目标产物11;
取代邻苯二胺的结构式如下式5所示,
Figure BDA0002501068080000041
其中,X为O、S或NH,R为H、4-CH3、4-Cl、4,5-CH3或4,5-Cl。
(2)苯并唑类-炔基-
Figure BDA0002501068080000046
Base衍生物12的合成
将中间体4、苯偶酰衍生物或9,10-菲醌和醋酸铵置于干燥的茄型瓶中,回流反应一段时间,反应结束后冷却至室温,旋干溶剂,粗产物柱层析分离纯化,得目标产物12;
其中,苯偶酰衍生物或9,10-菲醌的结构式如下式6-10所示,
Figure BDA0002501068080000042
进一步的,所述步骤S1具体包括:
将对碘苯胺和多聚甲醛混合,在低温下缓慢滴入三氟乙酸,滴完后在于低温下继续反应一段时间,之后缓慢升至室温,TLC跟踪反应结束;将反应混合物倒入冰水中,调节pH到中性,用二氯甲烷萃取,有机相再用饱和食盐水萃取,合并有机层,干燥,过滤,滤液减压蒸馏,柱层析分离纯化,再用丙酮重结晶,干燥后得中间体2。
进一步的,所述步骤S2具体包括
将2,8-二碘-
Figure BDA0002501068080000043
Base和4-乙炔基苯甲醛置于双口瓶中,加入四三苯基膦钯、碳酸钾溶液和四氢呋喃,避光回流一段时间,反应结束后冷却至室温,二氯甲烷萃取,干燥,旋干溶剂,柱层析分离纯化,得中间体4。
本发明还提供了上述苯并唑类-炔基-
Figure BDA0002501068080000044
Base衍生物在检测金属离子中的应用。
本发明还提供了上述苯并唑类-炔基-
Figure BDA0002501068080000045
Base衍生物在制备抗菌药物中的应用。
与现有技术相比,本发明的有益效果:
本发明以对碘苯胺、多聚甲醛、4-乙炔基苯甲醛、1,4-二氧六环或乙二酮衍生物等原料通过缩合反应制得一类可用于金属离子识别的具有聚集诱导发光的苯并唑类-炔基-
Figure BDA0002501068080000051
Base衍生物,合成工艺所需反应条件温和、反应时间短、产率高,具有很好的规模化应用前景;
本发明的苯并唑类-炔基-
Figure BDA0002501068080000052
Base衍生物,发光性能优异,为蓝色发光,具有明显的聚集诱导发光,在制备新型蓝色固态发光材料及聚集态诱导蓝光材料方面具有应用潜力;
本发明的部分苯并唑类-炔基-
Figure BDA0002501068080000053
Base衍生物对Fe3+具有识别能力,在制备金属离子荧光探针方面具有应用潜力;
本发明的部分苯并唑类-炔基-
Figure BDA0002501068080000054
Base衍生物对真菌标准株烟曲霉(AF1160)有较好的抑制效果,在抗真菌新药研发方面具有应用潜力。
附图说明
图1为本发明实施例3中不同浓度Fe3+对11g相对荧光强度(RFI)的影响(左)(左)和研究配位比的job曲线(右)。
具体实施方式:
下面将结合附图和具体实施例,对本发明的技术方案进行清楚、完整地描述。显然,所描述的实施例仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1苯并唑类-炔基-
Figure BDA0002501068080000055
Base衍生物11和12的合成
Figure BDA0002501068080000056
Figure BDA0002501068080000061
X=O or S or NH,R=H or 4-CH3 or 4-Cl or 4,5-CH3 or 4,5-Cl
Figure BDA0002501068080000062
具体包括:
(1)中间体2的制备
250mL干燥的圆底烧瓶中加入对碘苯胺(60mmol)和多聚甲醛(150mmol),冷却至-15℃,通过恒压滴液漏斗缓慢滴加120mL三氟乙酸,滴完后将反应体系移至室温反应7天,用冰水淬灭,氨水调pH到中性,二氯甲烷萃取(50mL×3),有机相再用饱和食盐水萃取(60mL×3),无水硫酸钠干燥,柱层析分离纯化(V石油醚:V乙酸乙酯=5:1),最后用丙酮重结晶,干燥,得中间体2。
(2)中间体4的制备
100mL双口瓶中加入2,8-二碘-TB(3mmol),4-乙炔基苯甲醛(6.3mmol),10%mmol四三苯基膦钯,10mL(2M)的碳酸钾溶液和30mL四氢呋喃,避光回流12h,反应结束后冷却至室温,二氯甲烷萃取(40mL×3),旋干溶剂,粗产物经柱层析分离(V石油醚:V乙酸乙酯=2:1)得中间体4。
(3)化合物11的制备
50mL干燥的茄型瓶中加入中间体4(0.1mmol)、取代邻苯二胺(0.24mmol)和25mL1,4-二氧六环,回流8h,反应结束后冷却至室温,旋干溶剂,粗产物经柱层析分离得到产物11。
(4)化合物12的制备
50mL干燥的茄型瓶中加入中间体4(0.1mmol)、苯偶酰衍生物或9,10-菲醌(0.1mmol)和25mL醋酸铵,回流2h,反应结束后恢复至室温,减压蒸掉多余溶剂,粗产物柱层析分离纯化,得目标产物12。
以化合物11a、12a为例详细说明其合成方法(化合物11b-11i的合成方法同11a,化合物12b-11e的合成方法同12a):
将化合物4(0.1mmol)、邻苯二胺(0.24mmol)和25mL1,4-二氧六环加到50mL干燥的茄型瓶中,回流8h,反应结束后冷却至室温,旋干溶剂,粗产物柱层析分离(V石油醚:V乙酸乙酯=1:2),得到产物11a,收率为60%。
化合物11a的结构式为:
Figure BDA0002501068080000071
分子式为:C45H30N6
中文命名为:
2,8-双((4-1H-苯并[d]咪唑-2-基)苯基)乙炔基)-6H,12H-5,11-桥亚甲基二苯并[b,f][1,5]二氮芳辛
英文命名为:
2,8-bis((4-(1H-benzo[d]imidazol-2-yl)phenyl)ethynyl)-6H,12H-5,11-methanodib enzo[b,f][1,5]diazocine
外观:砖红色固体
熔点:156.9-157.6℃
核磁共振氢谱:1H NMR(400MHz,DMSO-d6)δ13.06(s,2H,N-H),8.19(s,3H,Ar-H),7.60(d,J=11.3Hz,10H,Ar-H),7.34-7.47(m,2H,Ar-H),7.31-6.88(m,7H,Ar-H),4.67(d,J=16.2Hz,2H,CH2-bridge),4.41-4.02(m,4H,2×CH2).
核磁共振碳谱:13C NMR(100MHz,DMSO-d6)δ150.95,149.41,133.77,132.75,132.59,132.56,132.30,132.07,131.97,130.40,129.44,129.35,129.24,127.27,127.14,126.92,124.17,122.26,117.34,100.00.
质谱:HRMS(ESI)m/z:calcd for C45H30N6:(M-H)+653.2454;found:653.2453.
50mL干燥的茄型瓶中加入中间体4(0.1mmol)、9,10-菲醌(0.1mmol)和25mL醋酸铵,回流2h,反应结束后冷却至室温,旋干溶剂,粗产物经柱层析(V石油醚:V乙酸乙酯=1:2)分离纯化,得目标产物12a。
化合物12a的结构式为:
Figure BDA0002501068080000081
分子式为:C61H42N6
中文命名为:
2,8-双((4-(4,5-二苯基-1H-咪唑-2-基)苯基)乙炔基)-6H,12H-5,11-桥亚甲基二苯并[b,f][1,5]二氮芳辛
英文命名为:
2,8-bis((4-(4,5-diphenyl-1H-imidazol-2-yl)phenyl)ethynyl)-6H,12H-5,11-methan odibenzo[b,f][1,5]diazocine
外观:金黄色固体
熔点:178.4-179.9℃
核磁共振氢谱:1H NMR(400MHz,DMSO-d6)δ12.82(s,2H,N-H),8.11(d,J=8.0Hz,3H,Ar-H),7.69(s,1H,Ar-H),7.59(d,J=7.7Hz,4H,Ar-H),7.57-7.47(m,7H,Ar-H),7.45(s,4H,Ar-H),7.37(s,5H,Ar-H),7.31(s,4H,Ar-H),7.27-7.06(m,6H,Ar-H),4.68(d,J=16.7Hz,2H,CH2-bridge),4.36-4.11(m,4H,4H,2×CH2).
质谱:HRMS(ESI)m/z:calcd for C61H42N6:(M+H)+859.3549;found:859.3549.
其余产物结构表征:
化合物11b的结构式为:
Figure BDA0002501068080000091
分子式为:C49H38N6
中文命名为:
2,8-双((4-(5,6-二甲基-1H-苯并[d]咪唑-2-基)苯基)乙炔基)-6H,12H-5,11-桥亚甲基二苯并[b,f][1,5]二氮芳辛
英文命名为:
2,8-bis((4-(5,6-dimethyl-1H-benzo[d]imidazol-2-yl)phenyl)ethynyl)-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine
外观:金黄色固体
熔点:>300℃
核磁共振氢谱:1H NMR(400MHz,DMSO-d6)δ8.35(s,1H,Ar-H),8.17(d,J=7.0Hz,4H,Ar-H),7.87(s,5H,Ar-H),7.67(d,J=7.7Hz,3H,Ar-H),7.37(d,J=8.0Hz,2H,Ar-H),7.28-7.09(m,3H,Ar-H),4.67(d,J=16.3Hz,2H,CH2-bridge),4.38-4.12(m,4H,2×CH2),2.51(s,12H,4×CH3).
核磁共振碳谱:13C NMR(100MHz,DMSO-d6)δ150.00,149.38,133.77,132.75,132.59,132.56,132.23,132.07,131.97,131.95,130.78,130.74,130.61,129.35,129.24,126.89,123.77,117.37,100.00,91.57,88.79,20.57.
质谱:HRMS(ESI)m/z:calcd for C49H38N6:(M+H)+711.3236;found:71.3308.
化合物11c的结构式为:
Figure BDA0002501068080000092
分子式为:C45H26Cl4N6
中文命名为:
2,8-双((4-(5,6-二氯-1H-苯并[d]咪唑-2-基)苯基)乙炔基)-6H,12H-5,11-桥亚甲基二苯并[b,f][1,5]二氮芳辛
英文命名为:
2,8-bis((4-(5,6-dichloro-1H-benzo[d]imidazol-2-yl)phenyl)ethynyl)-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine
外观:深黄色固体
熔点:202.6-204.3℃.
核磁共振氢谱:1H NMR(400MHz,DMSO-d6)δ13.39(s,2H,N-H),8.19(d,J=7.2Hz,3H,Ar-H),7.96(s,2H,Ar-H),7.78(s,3H,Ar-H),7.68(d,J=7.1Hz,3H,Ar-H),7.38(d,J=9.2Hz,3H,Ar-H),7.23(d,J=14.3Hz,4H,Ar-H),4.68(d,J=17.6Hz,2H,CH2-bridge),4.38-4.16(m,4H,2×CH2).
核磁共振碳谱:13C NMR(100MHz,DMSO-d6)δ160.67,153.55,153.54,149.48,145.26,132.38,132.36,130.84,130.79,129.47,129.26,127.55,127.47,127.43,124.90,117.23,116.39,100.00,92.09,88.59.
质谱:HRMS(ESI)m/z:calcd for C45H26Cl4N6:(M+H)+791.1051;found:791.1080.
化合物11d的结构式为:
Figure BDA0002501068080000101
分子式为:C47H34N6
中文命名为:
2,8-双((4-(5-甲基-1H-苯并[d]咪唑-2-基)苯基)乙炔基)-6H,12H-5,11-桥亚甲基二苯并[b,f][1,5]二氮芳辛
英文命名为:
2,8-bis((4-(5-methyl-1H-benzo[d]imidazol-2-yl)phenyl)ethynyl)-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine
外观:金黄色固体
熔点:213.5-214.4℃
核磁共振氢谱:1H NMR(400MHz,DMSO-d6)δ12.86(s,2H,N-H),8.15(t,J=12.5Hz,3H,Ar-H),7.65(d,J=6.4Hz,4H,Ar-H),7.55(s,2H,Ar-H),7.49-7.28(m,5H,Ar-H),7.26-7.13(m,3H,Ar-H),7.04(s,3H,Ar-H),4.68(d,J=16.7Hz,2H,CH2-bridge),4.36-4.05(m,4H,2×CH2),2.43(s,6H,2×CH3).
质谱:HRMS(ESI)m/z:calcd for C47H34N6:(M-H)+681.2767;found:681.2771.
化合物11e的结构式为:
Figure BDA0002501068080000111
分子式为:C45H28N4S2
中文命名为:
2,8-双((4-(苯并[d]噻唑-2-基)苯基)乙炔基)-6H,12H-5,11-桥亚甲基二苯并[b,f][1,5]二氮芳辛
英文命名为:
2,8-bis((4-(benzo[d]thiazol-2-yl)phenyl)ethynyl)-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine
外观:深黄色固体
熔点:281.3-283.4℃
核磁共振氢谱:1H NMR(400MHz,DMSO-d6)δ8.85(s,2H,Ar-H),8.71(s,2H,Ar-H),8.04(d,J=7.4Hz,3H,Ar-H),7.60(d,J=7.2Hz,4H,Ar-H),7.37(d,J=8.2Hz,2H,Ar-H),7.28-7.14(m,3H,Ar-H),7.05(s,2H,Ar-H),6.90(d,J=7.6Hz,2H,Ar-H),6.78(d,J=7.7Hz,2H,Ar-H),4.67(d,J=16.6Hz,2H,CH2-bridge),4.36-4.12(m,4H,2×CH2).
质谱:HRMS(ESI)m/z:calcd for C45H28N4S2:(M+H)+689.1834;found:689.1836.
化合物11f的结构式为:
Figure BDA0002501068080000121
分子式为:C45H28Cl2N6
中文命名为:
2,8-双((4-(5-氯-1H-苯并[d]咪唑-2-基)苯基)乙炔基)-6H,12H-5,11-桥亚甲基二苯并[b,f][1,5]二氮芳辛
英文命名为:
2,8-bis((4-(5-chloro-1H-benzo[d]imidazol-2-yl)phenyl)ethynyl)-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine
外观:金黄色固体
熔点:189.6-191.3℃
核磁共振氢谱:1H NMR(400MHz,DMSO-d6)δ8.20(d,J=8.1Hz,3H,Ar-H),7.68(d,J=8.3Hz,5H,Ar-H),7.63(d,J=8.2Hz,3H,Ar-H),7.39(d,J=8.7Hz,3H,Ar-H),7.30-7.12(m,6H,Ar-H),4.68(d,J=16.7Hz,2H,CH2-bridge),4.44-4.11(m,4H,2×CH2).13C NMR(100MHz,DMSO-d6)δ152.36,149.46,132.34,130.82,130.78,129.86,129.26,127.67,127.31,124.57,117.28,117.08,91.92,88.65.
质谱:HRMS(ESI)m/z:calcd for C45H28Cl2N6:(M-H)+726.1674;found:726.1672.
化合物11g的结构式为:
Figure BDA0002501068080000122
分子式为:C45H28N4O2
中文命名为:
2,8-双((4-(苯并[d]恶唑-2-基)苯基)乙炔基)-6H,12H-5,11-桥亚甲基二苯并[b,f][1,5]二氮芳辛
英文命名为:
2,8-bis((4-(benzo[d]oxazol-2-yl)phenyl)ethynyl)-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine
外观:金黄色固体
熔点:227.3-228.2℃
核磁共振氢谱:1H NMR(400MHz,CDCl3)δ8.68(s,2H,Ar-H),7.88(d,J=7.5Hz,4H,Ar-H),7.58(d,J=7.3Hz,4H,Ar-H),7.37(d,J=7.7Hz,2H,Ar-H),7.31(d,J=7.9Hz,2H,Ar-H),7.15(d,J=8.0Hz,4H,Ar-H),7.02(d,J=8.2Hz,2H,Ar-H),6.91(t,J=7.5Hz,2H,Ar-H),4.73(d,J=16.5Hz,2H,CH2-bridge),4.36(s,2H,CH2),4.22(d,J=16.8Hz,2H,CH2).
核磁共振碳谱:13C NMR(100MHz,DMSO-d6)δ158.71,151.93,149.47,138.10,136.70,131.96,130.87,130.78,129.59,129.25,128.23,125.74,125.49,120.01,119.99,119.59,117.28,116.63,92.17,88.94.
质谱:HRMS(ESI)m/z:calcd for C45H28N4O2:(M+H)+657.2291;found:657.2298.
化合物11h的结构式为:
Figure BDA0002501068080000131
分子式为:C47H32N4O2
中文命名为:
2,8-双((4-(5-甲基苯并[d]恶唑-2-基)苯基)乙炔基)-6H,12H-5,11-桥亚甲基二苯并[b,f][1,5]二氮芳辛
英文命名为:
2,8-bis((4-(5-methylbenzo[d]oxazol-2-yl)phenyl)ethynyl)-6H,12H-5,11-methano dibenzo[b,f][1,5]diazocine
外观:深黄色固体
熔点:183.5-184.1℃
核磁共振氢谱:1H NMR(400MHz,DMSO-d6)δ8.81(s,1H,Ar-H),8.72(s,1H,Ar-H),8.67(s,1H,Ar-H),8.05(d,J=8.0Hz,3H,Ar-H),7.61(d,J=7.8Hz,3H,Ar-H),7.37(d,J=8.0Hz,2H,Ar-H),7.28–7.15(m,3H,Ar-H),7.06(s,1H,Ar-H),6.90(d,J=7.7Hz,1H,Ar-H),6.78(d,J=8.0Hz,1H,Ar-H),6.50(d,J=7.7Hz,1H,Ar-H),6.39(s,1H,Ar-H),6.18(d,J=7.0Hz,1H,Ar-H),4.67(d,J=17.0Hz,2H,CH2-bridge),4.29(m,4H,2×CH2),2.25–2.06(m,6H,2×CH3).
质谱:HRMS(ESI)m/z:calcd for C47H32N4O2:(M-H)+683.2447;found:683.2460.
化合物11i的结构式为:
Figure BDA0002501068080000141
分子式为:C45H26ClN4O2
中文命名为:
2,8-双((4-(5-氯苯并[d]恶唑-2-基)苯基)乙炔基)-6H,12H-5,11-桥亚甲基二苯并[b,f][1,5]二氮芳辛
英文命名为:
2,8-bis((4-(5-chlorobenzo[d]oxazol-2-yl)phenyl)ethynyl)-6H,12H-5,11-methano dibenzo[b,f][1,5]diazocine
外观:深黄色固体
熔点:259.1-261.2℃
核磁共振氢谱:1H NMR(400MHz,CDCl3)δ8.64(s,2H,Ar-H),7.89(d,J=7.3Hz,3H,Ar-H),7.60(d,J=7.3Hz,3H,Ar-H),7.40(d,J=7.5Hz,2H,Ar-H),7.30(s,1H,Ar-H),7.14(d,J=10.9Hz,7H,Ar-H),6.96(d,J=8.0Hz,2H,Ar-H),4.73(d,J=17.4Hz,2H,CH2-bridge),4.37(s,2H,CH2),4.23(d,J=16.4Hz,2H,CH2).
核磁共振碳谱:13C NMR(100MHz,DMSO-d6)δ160.43,150.88,149.50,139.41,136.37,132.36,131.98,130.88,130.79,130.22,129.80,129.26,127.43,125.83,125.75,123.45,119.40,118.00,117.22,100.00,92.35,88.90.
质谱:HRMS(ESI)m/z:calcd for C45H26ClN4O2:(M+H)+725.1511;found:725.1494.
化合物12b的结构式为:
Figure BDA0002501068080000151
分子式为:C61H42N6
中文命名为:
2,8-双((4-(4,5-二苯基-1H-咪唑-2-基)苯基)乙炔基)-6H,12H-5,11-桥亚甲基二苯并[b,f][1,5]二氮芳辛
英文命名为:
2,8-bis((4-(4,5-diphenyl-1H-imidazol-2-yl)phenyl)ethynyl)-6H,12H-5,11-methan odibenzo[b,f][1,5]diazocine
外观:金黄色固体
熔点:189.6-191.3℃
核磁共振氢谱:1H NMR(400MHz,DMSO-d6)δ8.20(d,J=8.1Hz,3H,Ar-H),7.68(d,J=8.3Hz,5H,Ar-H),7.63(d,J=8.2Hz,3H,Ar-H),7.39(d,J=8.7Hz,3H,Ar-H),7.30-7.12(m,6H,Ar-H),4.68(d,J=16.7Hz,2H,CH2-bridge),4.44-4.11(m,4H,2×CH2).
核磁共振碳谱:13C NMR(100MHz,DMSO-d6)δ152.36,149.46,132.34,130.82,130.78,129.86,129.26,127.67,127.31,124.57,117.28,117.08,91.92,88.65.
质谱:HRMS(ESI)m/z:calcd for C45H28Cl2N6:(M-H)+726.1674;found:726.1672.
化合物12c的结构式为:
Figure BDA0002501068080000152
分子式为:C65H50N6
中文命名为:
2,8-双((4-(4,5-二对甲苯基-1H-咪唑-2-基)苯基)乙炔基)-6H,12H-5,11-桥亚甲基二苯并[b,f][1,5]二氮芳辛
英文命名为:
2,8-bis((4-(4,5-di-p-tolyl-1H-imidazol-2-yl)phenyl)ethynyl)-6H,12H-5,11-metha nodibenzo[b,f][1,5]diazocine
外观:橙色固体
熔点:189.2-190.9℃
核磁共振氢谱:1H NMR(400MHz,DMSO-d6)δ8.13(s,1H,Ar-H),7.97(s,3H,Ar-H),7.83-7.50(m,16H,Ar-H),7.43(s,3H,Ar-H),7.31(s,2H,Ar-H),7.25(s,3H,Ar-H),6.99(s,2H,Ar-H),4.73(d,J=16.6Hz,2H,CH2-bridge),4.43-4.12(m,4H,2×CH2),2.56(s,12H,4×CH3).
质谱:HRMS(ESI)m/z:calcd for C65H50N6:(M+H)+915.4174;found:915.4169.
化合物12d的结构式为:
Figure BDA0002501068080000161
分子式为:C65H48Cl2N6O4
中文命名为:
2,8-双((4-(4-(2-氯苯基)-5-(3,4-二甲氧基苯基)-1H-咪唑-2-基)苯基)乙炔基)-6H,12H-5,11-桥亚甲基二苯并[b,f][1,5]二氮芳辛
英文命名为:
2,8-bis((4-(4-(2-chlorophenyl)-5-(3,4-dimethoxyphenyl)-1H-imidazol-2-yl)phen yl)ethynyl)-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine
外观:亮橙色固体
熔点:215.5-217.4℃
核磁共振氢谱:1H NMR(400MHz,DMSO-d6)δ12.92(s,1H,N-H),12.71(s,1H,N-H),8.08(s,3H,Ar-H),7.92(s,2H,Ar-H),7.67(s,2H,Ar-H),7.64-7.45(m,6H,Ar-H),7.39(d,J=17.7Hz,4H,Ar-H),7.21(d,J=12.6Hz,3H,Ar-H),7.07(s,2H,Ar-H),6.88(m,4H,Ar-H),4.66(s,2H,CH2-bridge),4.44-4.01(m,4H,2×CH2),3.26(s,12H,4×OCH3).
质谱:HRMS(ESI)m/z:calcd for C65H48Cl2N6O4:(M+H)+1047.3192;found:1047.3195.
化合物12e的结构式为:
Figure BDA0002501068080000171
分子式为:C57H34ClN6
中文命名为:
2-((4-(7H-乙酰萘[1,2-d]咪唑-8-基)苯基)乙炔基)-8-((4-(6a,7-二氢-3H-乙酰萘[1,2-d]咪唑-8-基)苯基)乙炔基)-6H,12H-5,11-桥亚甲基二苯并[b,f][1,5]二氮芳辛
英文命名为:
2-((4-(7H-acenaphtho[1,2-d]imidazol-8-yl)phenyl)ethynyl)-8-((4-(6a,7-dihydro-3H-acenaphtho[1,2-d]imidazol-8-yl)phenyl)ethynyl)-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine
外观:红棕色固体
熔点:168.5-169.4℃
核磁共振氢谱:1H NMR(400MHz,DMSO-d6)δ12.92(s,2H,N-H),8.26–8.08(m,4H,Ar-H),7.86(m,2H,Ar-H),7.71-7.59(m,4H,Ar-H),7.48(m,4H,Ar-H),7.37(d,J=8.1Hz,4H,Ar-H),7.26-7.11(m,3H,Ar-H),7.05(s,3H,Ar-H),4.72-4.61(m,2H,CH2-bridge),4.33-4.14(m,4H,2×CH2).
核磁共振碳谱:13C NMR(100MHz,DMSO-d6)δ192.98,188.12,149.77,144.83,135.85,132.83,132.82,132.81,132.79,132.78,132.35,131.06,130.92,130.21,129.45,129.43,129.30,129.01,128.90,125.77,121.78,121.73,116.84,93.66,88.33.
质谱:HRMS(ESI)m/z:calcd for C57H34ClN6:(M+H)+805.3080;found:805.3048.
化合物的物理性质(产率、熔点)如表1所示:
表1化合物的产率、熔点
Figure BDA0002501068080000181
实施例3金属离子检测
各化合物的金属离子识别实验结果如表2所示(除表2所示化合物外,其他化合物未发现对下列金属离子具有响应能力):
表2产物与7种金属离子作用后RFI的变化
Figure BDA0002501068080000182
“-”号表示加入金属离子后RFI的降低值,没有符号表示加入金属离子后RFI的增加值。
从表2可以看出,该类化合物对Fe3+、Al3+均有良好响应,RFI都有不同程度的变化。其中,化合物11g加入金属离子后荧光强度发生最明显、也最具有特异性的。
图1为不同浓度Fe3+对11gRFI的影响(左)和研究配位比的job曲线(右),从图中可以看出11g与Fe3+以1:2的方式进行配位。
实施例4抗真菌活性测试
采用MTT方法测定了产物对真菌标准株烟曲霉(AF1160)的抑制活性(表3),筛选到2个化合物有较好的抑菌效果,尤其是化合物11i,其抑菌浓度为10μg/mL。从结构上来看,将TB与咪唑或噁唑类化合物以三键连接在一起能够增强产物的抑菌效果。
表3化合物12和13对AF1160最低抑菌浓度(MIC,μg/mL)
Figure BDA0002501068080000191

Claims (6)

1.一类苯并唑类-炔基-
Figure FDA0003656259570000011
Base衍生物,其特征在于,其结构式为下式之一:
Figure FDA0003656259570000012
Figure FDA0003656259570000021
2.权利要求1中所述苯并唑类-炔基-
Figure FDA0003656259570000022
Base衍生物的制备方法,其特征在于,包括:
S1:制备下式所示中间体2,
Figure FDA0003656259570000023
S2:制备下式所示中间体4
Figure FDA0003656259570000031
S3:苯并唑类-炔基-
Figure FDA0003656259570000032
Base衍生物的合成
(1)苯并唑类-炔基-
Figure FDA0003656259570000033
Base衍生物11a、11b、11c、11d、11e、11f、11g、11h或11i的合成
将中间体4、取代邻苯二胺和1,4-二氧六环置于干燥的茄型瓶中,回流一段,反应结束后冷却至室温,旋干溶剂,粗产物柱层析分离纯化,得目标产物11a、11b、11c、11d、11e、11f、11g、11h或11i;
取代邻苯二胺的结构式如下式5所示,
Figure FDA0003656259570000034
其中,X为O、S或NH,R为H、4-CH3、4-Cl、4,5-CH3或4,5-Cl;
(2)苯并唑类-炔基-
Figure FDA0003656259570000035
Base衍生物12a、12b、12c、12d或12e的合成
将中间体4、苯偶酰衍生物或9,10-菲醌和醋酸铵置于干燥的茄型瓶中,回流反应一段时间,反应结束后冷却至室温,旋干溶剂,粗产物柱层析分离纯化,得目标产物12a、12b、12c、12d或12e;
其中,苯偶酰衍生物或9,10-菲醌的结构式如下式6-10所示,
Figure FDA0003656259570000036
3.根据权利要求2所述的制备方法,其特征在于,所述步骤S1具体包括:
将对碘苯胺和多聚甲醛混合,在-15℃缓慢滴入三氟乙酸,滴完后将反应体系移至室温反应7天,TLC跟踪反应结束;将反应混合物倒入冰水中,调节pH到中性,用二氯甲烷萃取,有机相再用饱和食盐水萃取,合并有机层,干燥,过滤,滤液减压蒸馏,柱层析分离纯化,再用丙酮重结晶,干燥后得中间体2。
4.根据权利要求2所述的制备方法,其特征在于,所述步骤S2具体包括
将2,8-二碘-
Figure FDA0003656259570000041
Base和4-乙炔基苯甲醛置于双口瓶中,加入四三苯基膦钯、碳酸钾溶液和四氢呋喃,避光回流一段时间,反应结束后冷却至室温,二氯甲烷萃取,干燥,旋干溶剂,柱层析分离纯化,得中间体4。
5.权利要求1中所述苯并唑类-炔基-
Figure FDA0003656259570000042
Base衍生物在制备检测金属离子试剂中的应用。
6.权利要求1中所述苯并唑类-炔基-
Figure FDA0003656259570000043
Base衍生物在制备抗菌药物中的应用。
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