CN112812028B - 蒽醌类化合物及其在制备抗寨卡或登革病毒药物中的应用 - Google Patents

蒽醌类化合物及其在制备抗寨卡或登革病毒药物中的应用 Download PDF

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CN112812028B
CN112812028B CN202011638175.7A CN202011638175A CN112812028B CN 112812028 B CN112812028 B CN 112812028B CN 202011638175 A CN202011638175 A CN 202011638175A CN 112812028 B CN112812028 B CN 112812028B
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黎孟枫
龙玉华
袁洁
于暕辰
陈涛
涂松源
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Abstract

本发明提供了蒽醌类化合物及其在制备抗寨卡或登革病毒药物中的应用,本发明提供了一种蒽醌类化合物,实验证明该蒽醌类化合物对于寨卡病毒以及登革病毒具有很好的抑制作用,其抑制EC50为0.5~100μM,且对宿主细胞安全、无毒副作用,可用于寨卡病毒或登革病毒的防治中,为研究开发抗寨卡或登革病毒药物提供了新的选择和途径。

Description

蒽醌类化合物及其在制备抗寨卡或登革病毒药物中的应用
技术领域
本发明涉及医药技术领域,更具体地,涉及蒽醌类化合物及其在制备抗寨卡或登革病毒药物中的应用。
背景技术
寨卡病毒(Zika Virus,ZIKV)是一种正单链RNA病毒,为黄病毒科黄病毒属病毒,主要通过蚊虫叮咬传播,亦可通过性接触传播。ZIKV感染者可能出现发热、关节炎、格林-巴利综合征等症状,新生儿感染者可能出现先天性小头畸形病症。登革病毒(Dengue Virus,DENV)属于黄病毒科黄病毒属,是RNA正链病毒,通过蚊虫传播,可出现全身性发热、出疹、关节炎等症状,严重者可发生休克死亡。目前对于寨卡病毒或登革病毒尚无安全、有效的疫苗,且目前也没有临床批准的特异性抗寨卡病毒和抗登革病毒的有效药物,因此寻找可有效抗寨卡病毒和抗登革病毒的药物具有重要的意义。
蒽醌(Anthraquinone,化学式:C14H8O2),又音译作安特拉归农,是一种醌类化学物,蒽醌的复合物天然存在,也可以人工合成,蒽醌类包括了其不同还原程度的产物和二聚物,如蒽酚、氧化蒽酚、蒽酮等,另外还有这些化合物的甙类。在天然产物中,蒽醌常存在于高等植物和低等植物地衣类和菌类的代谢产物中,研究表明蒽醌类化合物具有止血、抗菌、泻下、利尿的作用,如专利CN107412227B提供了一种蒽醌类化合物,该蒽醌类化合物对临床多种真菌株均表现良好的抗真菌作用。但目前并无蒽醌类化合物在抗病毒方面的研究。
发明内容
本发明针对现有技术中蒽醌类化合物在抗病毒方面研究的不足,旨在提供蒽醌类化合物及其在制备抗寨卡或登革病毒药物中的应用,本发明提供了一种蒽醌类化合物,实验证明该蒽醌类化合物对于寨卡病毒以及登革病毒具有很好的抑制作用,其抑制EC50为0.5~100μM,对宿主细胞安全、无毒副作用,可用于寨卡病毒或登革病毒的防治中。
本发明的首要目的是提供一种蒽醌类化合物。
本发明的另一目的是提供所述蒽醌类化合物、或其药学上可接受的盐、或立体异构体、或其前药在制备抗病毒药物中的应用。
本发明的再一目的是提供一种抗登革病毒的药物。
本发明的再一目的是提供一种抗寨卡病毒的药物。
本发明的上述目的通过以下技术方案实现:
本发明提供了一种蒽醌类化合物,其化学结构式如下所示:
Figure BDA0002877355810000021
其中,所述R选自如下取代基:
Figure BDA0002877355810000022
此外,取代基R还可以为其他的氨基取代物,包括脂肪胺、芳基胺等。
本发明研究发现所述蒽醌类化合物对于寨卡病毒和登革病毒具有很好的抑制作用,其抗病毒半数有效剂量EC50在0.5~100μM范围内,且对宿主细胞安全、无毒,可用于寨卡病毒和/或登革病毒的防治。
优选地,当R选自如下取代基时,抗病毒活性最强:
Figure BDA0002877355810000023
因此所述蒽醌类化合物、或其药学上可接受的盐、或立体异构体、或其前药在制备抗病毒药物中的应用也在本发明的保护范围内。
优选地,所述病毒为寨卡病毒和/或登革病毒。
所述蒽醌类化合物药学上可接受的盐为其无机酸盐、无机碱盐或复盐。
所述无机酸盐为盐酸、氢碘酸、氢溴酸、硝酸、硼酸、碳酸、硫酸、磷酸或硅酸。
所述无机碱为氢氧化钠、氢氧化钾、氢氧化钡、氢氧化钙、氢氧化铵或氢氧化锂。
所述蒽醌类化合物前药是指可在体内转变成所述蒽醌类化合物或其盐的物质。
本发明还提供一种抗登革病毒的药物,包含所述蒽醌类化合物、或其药学上可接受的盐、或立体异构体、或其前药。
本发明还提供一种抗寨卡病毒的药物,包含所述蒽醌类化合物、或其药学上可接受的盐、或立体异构体、或其前药。
优选地,所述药物还包括药用载体和/或赋形剂,制成不同的剂型。
所述药物剂型为散剂、片剂、颗粒剂、胶囊剂、溶液剂、糖浆剂、混悬剂、注射剂、粉针剂、水针剂、气雾剂、软膏剂、滴眼剂或栓剂。
所述药物的给药方式为经胃肠道给药、注射给药、呼吸道给药、皮肤给药、粘膜给药或腔道给药。
作为一种优选的方法,本发明的化合物可以通过以下方法合成:
(1)取萘茜10mmol,溶解在80mL AcOH溶液中,再加入50mmol 2,3-二甲基-1,3-丁二烯(5equiv),氮气保护下回流反应6h,TLC检测反应完全;冷却,减压蒸馏除去反应溶剂,用50ml 2M的NaOH溶液将粗产品完全溶解,常温快速搅拌1h;在冰水冷却的条件下,加稀盐酸酸化至溶液的pH为6~7,减压抽滤得到滤饼。粗产物进行柱色谱分离,用EA(乙酸乙酯):PE(石油醚)=1:80(v/v)洗脱剂洗脱,得到化合物4b。
(2)取5mmol化合物4b溶于50mL氯仿,然后加入1.38g间氯过氧苯甲酸(m-CPBA)(8mmol,1.6equiv),室温下反应1h,饱和硫代硫酸钠溶液加入搅拌30分钟后萃取,有机相用无水硫酸镁干燥,旋蒸得粗产物(5b)。将粗产物进行硅胶柱色谱分离,用EA:PE=1:20(v/v)洗脱剂洗脱,得到化合物5b。
(3)取286mg化合物5b(1mmol),叔丁醇:水=1:1(V/V)作溶剂,Amberlyst-15作催化剂,超声下反应2h;加入少量饱和食盐水,用乙酸乙酯萃取;加无水MgSO4干燥,减压蒸馏除去溶剂,粗产物进行硅胶柱色谱分离,用EA:PE=1:15(v/v)洗脱剂洗脱,得到化合物6b。
(4)取30.4mg化合物6b(0.1mmol),溶于3ml无水甲醇,加入0.5mmol胺(5equiv),室温下搅拌,TLC监测反应完全,减压蒸馏除溶剂,水洗,乙酸乙酯萃取,干燥,浓缩得粗产物进行硅胶柱色谱分离,采用EA:PE=1:15(v/v)~1:2(v/v)洗脱剂梯度洗脱,即得到上述蒽醌类化合物。
与现有技术相比,本发明的有益效果是:
本发明提供的蒽醌类化合物对于寨卡病毒和登革病毒具有很好的抑制作用,其抑制EC50在0.5~100μM范围内,而对宿主细胞较为安全,可用于寨卡病毒和/或登革病毒的防治,为研究开发新的抗寨卡或登革病毒药物提供了新的选择和途径,具有很好的应用前景。
附图说明
图1为蒽醌类化合物的合成路线图。
具体实施方式
下面结合具体实施方式对本发明作进一步的说明,但实施例并不对本发明做任何形式的限定。除非另有说明,本发明实施例采用的原料试剂为常规购买的原料试剂。
以下实施例涉及的化合物为以下一系列蒽醌类化合物:
Figure BDA0002877355810000051
实施例1蒽醌类化合物的合成和鉴定
蒽醌类化合物的合成路线如图1所示。
1、化合物的合成
(1)在250毫升的圆底烧瓶中加入萘茜10mmol,溶解在80mL AcOH溶液中,再加入2,3-二甲基-1,3-丁二烯(50mmol,5equiv),氮气保护下回流反应6h,TLC检测反应完全。冷却,减压蒸馏除去反应溶剂,用50ml 2M的NaOH溶液将粗产品完全溶解,常温快速搅拌1h;在冰水冷却的条件下,加稀盐酸酸化至溶液的pH为6~7,减压抽滤得到滤饼;粗产物进行柱色谱分离,用EA(乙酸乙酯):PE(石油醚)=1:80(v/v)洗脱剂洗脱,得到化合物4b。
(2)在25毫升圆底烧瓶中加入化合物4b(5mmol)溶于50mL氯仿,然后加入1.38g间氯过氧苯甲酸(m-CPBA)(8mmol,1.6equiv),室温下反应1h,饱和硫代硫酸钠溶液加入搅拌30分钟后萃取,有机相用无水硫酸镁干燥,旋蒸得粗产物(5b);将粗产物进行硅胶柱色谱分离,用EA:PE=1:20(v/v)洗脱剂洗脱,得到化合物5b。
(3)在25ml烧瓶中加入286mg化合物5b(1mmol),叔丁醇:水=1:1(V/V)作溶剂,Amberlyst-15作催化剂,超声下反应2h;加入少量饱和食盐水,用乙酸乙酯萃取;加无水MgSO4干燥,减压蒸馏除去溶剂,粗产物进行硅胶柱色谱分离,用EA:PE=1:15(v/v)洗脱剂洗脱,得到化合物6b。
(4)向10ml圆底烧瓶中加入化合物6b(30.4mg,0.1mmol),溶于3ml无水甲醇,加入相应的胺(0.5mmol,5equiv),室温下搅拌,TLC监测反应完全,减压蒸馏除溶剂,水洗,乙酸乙酯萃取,干燥,浓缩得粗产物进行硅胶柱色谱分离,采用EA:PE=1:15(v/v)~1:2(v/v)洗脱剂梯度洗脱得蒽醌类化合物7b~27b。
2、化合物的鉴别
(1)鉴定方法
各蒽醌类化合物的结构通过MS/HR-ESI-MS和NMR得以确证。
(2)鉴定结果
化合物4b:红色固体;熔点:173.2-174.5℃;1H NMR(400MHz,CDCl3)δ12.54(s,2H),7.20(s,2H),3.15(s,4H),1.77(s,6H);ESI-MS m/z 269.47[M-H]-。其结构式为:
Figure BDA0002877355810000061
化合物5b:棕红色固体;熔点:158.0-158.8℃;1H NMR(400MHz,CDCl3)δ12.38(s,2H),7.12(s,2H),3.33(s,1H),3.28(s,1H),2.67(s,1H),2.62(s,1H),1.49(s,6H);13C NMR(101MHz,CDCl3)δ185.73,158.57,141.39,129.57,111.39,60.51,30.03,19.24;HR-ESI-MSm/z[M–H]-calcd for C16H13O5 285.0769,found 285.0767。其结构式为:
Figure BDA0002877355810000062
化合物6b:红色固体;熔点:182.6-183.5℃;1H NMR(400MHz,DMSO)δ12.42(s,2H),7.33(s,2H),4.64(s,2H),2.50(s,4H),1.23(s,6H);13C NMR(101MHz,DMSO)δ186.54,157.28,143.79,129.42,111.31,70.32,35.23,22.81;HRESIMS m/z[M–H]-calcd forC16H15O6 303.0874,found 303.0872。其结构式为:
Figure BDA0002877355810000071
化合物7b:红色固体;熔点:170-171℃;1H NMR(500MHz,DMSO)δ14.10(s,1H),12.42(s,1H),8.23(s,1H),7.61(s,1H),6.41(s,2H),5.77(s,1H),4.69-4.37(m,4H),2.79-2.58(m,4H),1.24(s,6H);13C NMR(126MHz,DMSO)δ186.12(s),182.77(s),156.37(s),154.55(s),150.04(s),149.39(s),142.68(s),139.81(s),133.42(s),110.49(s),108.26(d,J=12.8Hz),106.85(s),99.85(s),70.14(s),38.74(s),35.85(s),35.17(s),23.06(s).ESI-MS m/z:399.1[M-H]-。其结构式为:
Figure BDA0002877355810000072
其中,
Figure BDA0002877355810000073
化合物8b:红色固体(产率39.3%);熔点:140-142℃;1H NMR(500MHz,DMSO)δ14.18(s,1H),12.40(s,1H),7.81(s,1H),7.53(d,J=0.9Hz,1H),6.47-6.19(m,2H),5.65(s,1H),4.53(d,J=3.7Hz,2H),1.25(s,6H);13C NMR(126MHz,DMSO)δ186.01(s),182.74(s),156.27(s),154.41(s),152.38(s),149.37(s),141.74(s),139.86(s),133.17(s),129.58(s),110.44(s),108.29(s),106.40(s),98.85(s),70.13(s),40.73(s),35.85(s),35.14(s),26.09(s),23.02(s);ESI-MS m/z:413.1[M-H]-。其结构式为:
Figure BDA0002877355810000081
其中,
Figure BDA0002877355810000082
化合物9b:红色固体(产率46%);熔点:130-132℃;1H NMR(500MHz,DMSO)δ14.23(s,1H),12.43(s,1H),7.37(d,J=8.3Hz,1H),5.70(s,1H),4.52(d,J=3.6Hz,2H),4.22(t,J=6.4Hz,1H),2.80-2.65(m,4H),2.04-1.81(m,5H),1.78-1.61(m,5H),1.25(s,6H);13CNMR(126MHz,DMSO)δ186.96(s),184.00(s),157.26(s),155.32(s),149.34(s),140.89(s),133.99(s),130.56(s),109.37(s),107.86(s),99.66(s),71.14(s),65.95(s),52.03(s),36.88(s),36.12(s),31.96(s),27.51(s),26.01(s),25.35(s),24.02(s),23.03(s);ESI-MS m/z:401.2[M-H]-。其结构式为:
Figure BDA0002877355810000083
其中,
Figure BDA0002877355810000084
化合物10b:红色固体(产率92.8%);熔点:190-192℃;1H NMR(500MHz,DMSO)δ14.14(s,1H),12.46(s,1H),7.98(s,1H),5.87(s,1H),4.53(d,J=4.0Hz,2H),3.31(s,2H),2.79-2.62(m,4H),1.25(s,10H),0.82(dd,J=6.8,2.0Hz,2H),0.74-0.66(m,2H);13C NMR(126MHz,DMSO)δ186.92(s),183.68(s),157.39(s),155.59(s),152.11(s),140.69(s),134.31(s),109.35(s),107.98(s),101.60(s),71.14(s),36.83(s),36.13(s),25.43(s),24.02(s),7.38(s);ESI-MS m/z:359.1[M-H]-。其结构式为:
Figure BDA0002877355810000085
其中,
Figure BDA0002877355810000086
化合物11b:红色固体(产率89.8%);熔点:198-200℃;1H NMR(500MHz,DMSO)δ14.24(s,1H),12.43(s,1H),7.86(d,J=5.8Hz,1H),5.64(s,1H),4.52(d,J=4.1Hz,2H),3.17(dd,J=13.9,6.6Hz,2H),2.76-2.62(m,4H),1.65-1.56(m,2H),1.25(s,6H),0.91(t,J=7.4Hz,3H);13C NMR(126MHz,DMSO)δ185.89(s),182.95(s),156.21(s),154.31(s),149.65(s),139.82(s),132.98(s),108.36(s),106.94(s),98.44(s),70.13(s),43.72(s),35.86(s),35.13(s),23.03(s),20.70(s),11.30(s);ESI-MS m/z:361.1[M-H]-。其结构式为:
Figure BDA0002877355810000091
其中,
Figure BDA0002877355810000092
化合物12b:红色固体(产率88.5%);熔点:188-190℃;1H NMR(500MHz,DMSO)δ14.22(s,1H),12.39(s,1H),7.64(t,J=5.9Hz,1H),5.62(s,1H),5.46(s,1H),4.52(d,J=4.1Hz,2H),3.30-3.22(m,2H),2.75-2.62(m,4H),2.22(t,J=6.9Hz,2H),1.94(d,J=5.8Hz,4H),1.56(dd,J=10.3,4.6Hz,2H),1.52-1.45(m,2H),1.25(s,6H);13C NMR(126MHz,DMSO)δ186.86(s),183.79(s),157.23(s),155.36(s),150.38(s),140.88(s),135.42(s),134.05(s),123.62(s),109.30(s),107.90(s),99.61(s),71.13(s),36.86(s),36.53(s),36.13(s),28.58(s),25.67(s),24.02(s),23.34(s),22.80(s);ESI-MS m/z:427.2[M-H]-。其结构式为:
Figure BDA0002877355810000093
其中,
Figure BDA0002877355810000094
化合物13b:红色固体(产率56.7%);熔点:162-163℃;1H NMR(500MHz,DMSO)δ14.09(s,1H),12.45(s,1H),8.44(t,J=6.5Hz,1H),7.34(d,J=4.3Hz,5H),5.54(s,1H),4.53(d,J=1.8Hz,2H),4.47(d,J=6.5Hz,2H),2.76-2.63(m,4H),1.25(d,J=3.9Hz,6H);13C NMR(126MHz,DMSO)δ185.91(s),182.84(s),156.35(s),154.49(s),149.56(s),139.80(s),137.14(s),133.29(s),128.48(s),127.11(s),108.35(s),106.87(s),99.69(s),70.13(s),45.24(s),35.83(s),35.16(s),23.03(s);ESI-MS m/z:409.1[M-H]-。其结构式为:
Figure BDA0002877355810000101
其中,
Figure BDA0002877355810000102
化合物14b:红色固体(产率99%);熔点:166-168℃;1H NMR(500MHz,DMSO)δ14.08(s,1H),12.43(s,1H),8.39(t,J=6.3Hz,1H),7.43(dd,J=5.1,1.0Hz,1H),7.12(d,J=3.3Hz,1H),6.99(dd,J=5.0,3.5Hz,1H),5.73(s,1H),4.66(d,J=6.3Hz,2H),4.53(d,J=2.9Hz,2H),2.76-2.63(m,4H),1.25(d,J=2.1Hz,6H);13C NMR(126MHz,DMSO)δ186.52(s),183.24(s),156.94(s),155.12(s),149.65(s),140.56(s),140.37(s),133.97(s),131.97(s),130.12(s),129.13(s),127.29(s),126.78(s),125.98(s),108.82(s),107.33(s),100.50(s),70.65(s),36.35(s),35.68(s),23.55(s);ESI-MS m/z:415.1[M-H]-。其结构式为:
Figure BDA0002877355810000103
其中,
Figure BDA0002877355810000104
化合物15b:红色固体(产率99%);熔点:157-159℃;1H NMR(500MHz,DMSO)δ14.18(s,1H),12.40(s,1H),7.83(s,1H),7.34(dd,J=4.5,1.7Hz,1H),7.00-6.94(m,2H),5.68(s,1H),4.53(d,J=3.8Hz,2H),3.49(dd,J=13.4,6.8Hz,2H),3.14(t,J=7.0Hz,2H),1.25(s,6H);13C NMR(126MHz,DMSO)δ186.00(s),182.73(s),156.27(s),154.41(s),149.37(s),140.69(s),139.87(s),133.18(s),126.98(s),125.58(s),124.30(s),108.29(s),106.88(s),98.97(s),70.13(s),43.48(s),35.85(s),35.15(s),27.58(s),23.03(s);ESI-MS m/z:429.1[M-H]-。其结构式为:
Figure BDA0002877355810000105
其中,
Figure BDA0002877355810000106
化合物16b:红色固体(产率33%);熔点:149-150℃;1H NMR(500MHz,DMSO)δ14.21(s,1H),12.45(s,1H),7.49(d,J=5.9Hz,1H),5.66(s,1H),4.52(s,2H),3.84(s,1H),3.05-2.55(m,4H),1.97(s,2H),1.62(d,J=62.0Hz,6H),1.25(s,6H);13C NMR(126MHz,DMSO)δ186.84(s),183.94(s),157.24(s),155.35(s),150.14(s),140.80(s),134.06(s),109.33(s),107.93(s),100.41(s),71.13(s),54.63(s),36.86(s),36.12(s),32.45(s),24.86(s),24.03(s);ESI-MS m/z:387.2[M-H]-。其结构式为:
Figure BDA0002877355810000111
其中,
Figure BDA0002877355810000112
化合物17b:红色固体(产率58.2%);熔点:157-159℃;1H NMR(500MHz,DMSO)δ14.32(s,1H),12.70(s,1H),5.57(s,1H),4.50(d,J=3.8Hz,2H),3.30(s,4H),2.69(d,J=18.7Hz,4H),1.90(t,J=6.3Hz,4H),1.25(s,6H);13C NMR(126MHz,DMSO)δ184.79(s),156.15(s),153.71(s),149.26(s),138.84(s),133.07(s),109.24(s),107.14(s),103.07(s),70.17(d,J=3.8Hz),51.36(s),35.79(s),35.27(s),23.05(s);ESI-MS m/z:373.1[M-H]-。其结构式为:
Figure BDA0002877355810000113
其中,
Figure BDA0002877355810000114
化合物19b:红色固体(产率48.4%);熔点:149-150℃;1H NMR(500MHz,DMSO)δ14.21(s,1H),12.39(s,1H),7.78(s,1H),7.29(q,J=7.9Hz,4H),7.23-7.18(m,1H),5.68(s,1H),4.53(d,J=4.0Hz,2H),3.47(dd,J=13.9,6.7Hz,2H),2.91(t,J=7.3Hz,2H),2.76-2.62(m,4H),1.25(s,6H);13C NMR(126MHz,DMSO)δ186.95(s),183.77(s),157.26(s),155.40(s),150.37(s),140.86(s),139.75(s),134.12(s),129.70(s),129.35(s),127.26(s),109.31(s),107.91(s),99.85(s),71.15(s),44.39(s),36.86(s),36.15(s),34.35(s),24.03(s);ESI-MS m/z:423.2[M-H]-。其结构式为:
Figure BDA0002877355810000121
其中,
Figure BDA0002877355810000122
化合物21b:红色固体(产率39.6%);熔点:165-167℃;1H NMR(500MHz,DMSO)δ14.24(s,1H),12.43(s,1H),7.81(d,J=6.2Hz,1H),5.63(s,1H),4.52(d,J=3.5Hz,2H),3.25(dd,J=13.4,6.7Hz,2H),2.80–2.61(m,4H),1.25(s,6H),1.17(t,J=7.1Hz,3H);13CNMR(126MHz,DMSO)δ186.90(s),183.96(s),157.21(s),155.33(s),150.39(s),140.82(s),133.99(s),109.36(s),107.94(s),99.39(s),71.14(s),37.86(s),36.86(s),36.12(s),24.03(s),13.92(s);ESI-MS m/z:347.1[M-H]-。其结构式为:
Figure BDA0002877355810000123
其中,
Figure BDA0002877355810000124
化合物23b:红色固体(产率99.7%);熔点:160-162℃;1H NMR(500MHz,DMSO)δ14.21(s,1H),12.41(s,1H),7.62(s,1H),5.70(s,1H),4.88(t,J=5.5Hz,1H),4.53(d,J=3.8Hz,2H),3.61(dd,J=11.1,5.5Hz,2H),3.30-3.15(m,2H),2.76-2.61(m,4H),1.25(s,6H);13C NMR(126MHz,DMSO)δ187.01(s),183.82(s),157.26(s),155.38(s),150.84(s),140.88(s),134.08(s),109.29(s),107.93(s),99.86(s),71.13(s),59.43(s),45.81(s),36.86(s),36.13(s),24.03(s);ESI-MS m/z:363.1[M-H]-。其结构式为:
Figure BDA0002877355810000125
其中,
Figure BDA0002877355810000126
化合物24b:红色固体(产率65.3%);熔点:168-170℃;1H NMR(500MHz,DMSO)δ14.20(s,1H),12.36(s,1H),7.51(s,1H),5.67(s,1H),4.53(d,J=3.8Hz,2H),3.64-3.53(m,4H),3.32(s,2H),2.71(dd,J=19.3,14.4Hz,4H),2.57(t,J=6.2Hz,2H),2.44(s,4H),1.25(s,6H);13C NMR(126MHz,DMSO)δ186.97(s),183.65(s),157.27(s),155.43(s),150.36(s),140.91(s),134.15(s),107.92(s),71.13(s),67.16(s),56.28(s),54.00(s),36.86(s),36.15(s),24.02(s);ESI-MS m/z:432.2[M-H]-。其结构式为:
Figure BDA0002877355810000131
其中,
Figure BDA0002877355810000132
化合物25b:红色固体(产率55.5%);熔点:185-187℃;1H NMR(500MHz,DMSO)δ14.19(s,1H),12.39(s,1H),7.60(t,J=6.1Hz,1H),5.75(s,1H),4.53(d,J=3.7Hz,2H),4.12-4.05(m,1H),3.71(ddd,J=66.2,14.4,7.6Hz,2H),3.38-3.31(m,1H),3.25(dd,J=13.7,6.8Hz,1H),2.77-2.62(m,4H),1.96(ddd,J=15.3,10.2,6.9Hz,1H),1.89-1.76(m,2H),1.60(dt,J=12.0,7.6Hz,1H),1.25(s,6H);13C NMR(126MHz,DMSO)δ187.05(s),183.71(s),157.30(s),155.41(s),150.69(s),140.90(s),134.15(s),109.26(s),107.89(s),100.10(s),77.15(s),71.13(s),68.22(s),47.15(s),36.86(s),36.13(s),29.64(s),26.05(s),24.03(s);ESI-MS m/z:403.2[M-H]-。其结构式为:
Figure BDA0002877355810000133
其中,
Figure BDA0002877355810000134
化合物26b:红色固体(产率46%);熔点:210-212℃;1H NMR(500MHz,DMSO)δ14.18(s,1H),12.47(s,1H),7.97(d,J=6.6Hz,1H),5.53(s,1H),4.57(s,2H),3.99(dd,J=15.2,7.6Hz,1H),2.78-2.60(m,4H),2.37-2.09(m,4H),1.79-1.66(m,2H),1.24(s,6H);13C NMR(126MHz,DMSO)δ186.00(s),183.01(s),156.27(s),154.41(s),148.45(s),139.79(s),133.21(s),108.43(s),107.02(s),99.53(s),70.19(d,J=1.6Hz),47.28(s),35.89(s),35.19(s),28.98(s),23.11(d,J=1.6Hz),15.07(s);ESI-MS m/z:373.1[M-H]-。其结构式为:
Figure BDA0002877355810000141
其中,
Figure BDA0002877355810000142
化合物27b:红色固体(产率62%);熔点:160-162℃;1H NMR(500MHz,DMSO)δ13.74(s,1H),12.79(s,1H),6.06(s,1H),4.53(d,J=3.6Hz,2H),3.78-3.70(m,4H),3.61-3.51(m,4H),2.70(t,J=8.7Hz,4H),1.25(s,6H);13C NMR(126MHz,DMSO)δ184.34(s),182.30(s),158.67(s),156.46(s),153.47(s),138.95(s),135.15(s),110.55(s),109.70(s),106.94(s),70.14(d,J=5.9Hz),65.70(s),49.42(s),35.93–35.74(m),35.51(d,J=35.3Hz),23.00(s);ESI-MS m/z:389.1[M-H]-。其结构式为:
Figure BDA0002877355810000143
其中,
Figure BDA0002877355810000144
实施例2蒽醌类化合物在细胞水平上的抗病毒活性检测以及半数细胞毒性浓度检测
一、蒽醌类化合物在细胞水平上的抗寨卡病毒活性检测
1、测试病毒株:寨卡病毒ZIKV(Z16019)
细胞系:A549
2、检测方法:
蒽醌类化合物抗病毒半数有效剂量(50%Effective Concentration,EC50):DMSO,浓度为0.5、1、2.5、5、10、25、50、100μM对应化合物提前1h饱和细胞,病毒感染1h后,换含对应浓度药物的无病毒培养基维持48h;收集细胞上清,用空斑实验检测病毒感染后化合物不同剂量组相对溶剂组(DMSO)的空斑形成抑制率。
抑制率(%)=(1-给药组病毒空斑形成数/溶剂对照组空斑形成数)×100%,用EXCEL 2013的Forecast公式计算,当抑制率等于50%时,对应蒽醌化合物的浓度为EC50。三次重复实验取平均值。
二、蒽醌类化合物在细胞水平上的抗登革病毒活性检测
1、测试病毒株:登革病毒DENV2(NGC)
细胞系:A549
2、检测方法:
蒽醌类化合物抗病毒半数有效剂量(50%antiviral Effective Concentration,EC50):DMSO,浓度0.5、1、2.5、5、10、25、50、100μM对应化合物提前1h饱和细胞,病毒感染1h后,换含对应浓度药物的无病毒培养基维持48h;收集细胞上清,用RT-qPCR实验检测病毒感染后化合物不同剂量组相对溶剂组(DMSO)的登革病毒RNA水平抑制率。
抑制率(%)=(1-给药组登革病毒RNA拷贝数/溶剂对照组登革病毒RNA拷贝数)×100%,用EXCEL 2013的Forecast公式计算,当抑制率等于50%时,对应蒽醌化合物的浓度,作为EC50。三次重复实验取平均值。
三、蒽醌类化合物半数细胞毒性浓度检测
利用MTT法进行测试,蒽醌类化合物梯度剂量加入到A549细胞上清中,维持48h后加入MTT孵育4h,吸出培养基,加入DMSO检测490nm吸光度值与DMSO溶剂对照组进行比较,计算抑制率。
抑制率(%)=(1-给药组490nm吸光度值/溶剂对照组490nm吸光度值)100%,用EXCEL 2013的Forecast公式计算,当抑制率等于50%时对应化合物的浓度,作为CC50。三次重复实验取平均值。
四、检测结果
蒽醌类化合物在A549细胞中抑制ZIKV和DENV2的EC50,以及半数细胞毒性浓度CC50测试结果如表1所示。
表1蒽醌类化合物在A549细胞中抑制ZIKV和DENV2的EC50及CC50
Figure BDA0002877355810000151
Figure BDA0002877355810000161
从表1的结果可以看出,蒽醌类化合物对于寨卡病毒和登革病毒具有很好的抑制作用,尤其是系列I的蒽醌类化合物的抗病毒活性最强。同时上述蒽醌类化合物在有效抗病毒剂量下对于宿主细胞具有较好的安全性,对于靶标病毒具有一定的特异性,可制备成为抗寨卡病毒和登革病毒药物进行应用,对于寨卡病毒和登革病毒的防治具有重要意义。
显然,本发明的上述实施例仅仅是为清楚地说明本发明所作的举例,而并非是对本发明的实施方式的限定。对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明权利要求的保护范围之内。

Claims (10)

1.一种蒽醌类化合物,其特征在于,其化学结构式如下所示:
Figure FDA0003360284630000011
2.权利要求1所述蒽醌类化合物、或其药学上可接受的盐在制备抗病毒药物中的应用。
3.根据权利要求2所述应用,其特征在于,所述病毒为寨卡病毒和/或登革病毒。
4.根据权利要求2所述应用,其特征在于,所述蒽醌类化合物药学上可接受的盐为其无机酸盐、无机碱盐或复盐。
5.根据权利要求4所述应用,其特征在于,所述无机酸盐为盐酸、氢碘酸、氢溴酸、硝酸、硼酸、碳酸、硫酸、磷酸或硅酸。
6.根据权利要求4所述应用,其特征在于,所述无机碱为氢氧化钠、氢氧化钾、氢氧化钡、氢氧化钙、氢氧化铵或氢氧化锂。
7.根据权利要求2所述应用,其特征在于,所述蒽醌类化合物前药是指可在体内转变成所述蒽醌类化合物或其盐的物质。
8.一种抗登革病毒的药物,其特征在于,包含权利要求1所述蒽醌类化合物、或其药学上可接受的盐。
9.一种抗寨卡病毒的药物,其特征在于,包含权利要求1所述蒽醌类化合物、或其药学上可接受的盐。
10.根据权利要求8或9所述药物,其特征在于,还包括药用载体和/或赋形剂,制成不同的剂型。
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