CN103664910B - 含1,4‑苯并二噁烷的1,2,4‑三氮唑类衍生物及其制法与其抗菌活性 - Google Patents

含1,4‑苯并二噁烷的1,2,4‑三氮唑类衍生物及其制法与其抗菌活性 Download PDF

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CN103664910B
CN103664910B CN201210339509.XA CN201210339509A CN103664910B CN 103664910 B CN103664910 B CN 103664910B CN 201210339509 A CN201210339509 A CN 201210339509A CN 103664910 B CN103664910 B CN 103664910B
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朱海亮
文晴
汤剑锋
王晓亮
张雁滨
杨雨顺
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Abstract

一类含1,4‑苯并二噁烷的1,2,4‑三氮唑类衍生物,具有如下通式:式中R为:

Description

含1,4-苯并二噁烷的1,2,4-三氮唑类衍生物及其制法与其抗 菌活性
技术领域
本发明涉及一类新型含1,4-苯并二噁烷的1,2,4-三氮唑类衍生物及其制备方法与作为抗菌药物的用途。
背景技术
过去的几十年中,多药耐药微生物的问题在全球已经达到令人震惊的程度。因此,寻找高效、低副作用的抗微生物感染的新药物成为一个重要和迫切的任务。
1,4-苯并二噁烷衍生物是许多药物和天然产物中常见的结构单元,并且有着重要的生物活性,它们可以作为临床医疗阻滞剂,在抗高血压、抗高血糖等疗法中扮演着日益重要的角色。并且近年来,有文献报道,1,4-苯并二噁烷衍生物具有一定的抗菌、抗炎、抗肿瘤的活性。
三氮唑是生产酮康唑、伊曲康唑、氟康唑、伏立康唑、沙排康唑等抗真菌药物的重要中间体,由于该类药物具有抗菌谱广、抗真菌活性好、吸收好,尤其适于口服吸收等特点,因此在临床上被广泛使用。因此,对1,4-苯并二噁烷结构进行修饰,形成含1,4-苯并二噁烷的1,2,4-三氮唑结构,能增强其抗菌活性。
发明内容
本发明的目的是提供一类新型的含1,4-苯并二噁烷的1,2,4-三氮唑类衍生物及其制备方法和用途。本发明的技术方案如下:
一类新型的含1,4-苯并二噁烷的1,2,4-三氮唑类衍生物,它具有如下通式:
式中R为:
一种制备权利要求1所述的含1,4-苯并二噁烷的1,2,4-三氮唑类衍生物的方法,其特征是它由下列步骤组成:
步骤1.于50ml乙醇中加入10g 1,4-苯并二噁烷-5-羧酸溶解,缓慢滴入3ml浓硫酸,80℃回流,反应10h。反应结束后,蒸干溶剂,加入20ml乙酸乙酯,饱和氯化钠洗涤3次,无水硫酸钠干燥,快速柱层析,得无色透明油状液体1,4-苯并二噁烷-5-羧酸乙酯。
步骤2.用20ml乙醇溶解1,4-苯并二噁烷-5-羧酸乙酯,然后加入水合肼(85%)30ml,80℃回流,反应24h。反应结束后,冷却至室温后大量白色固体析出,饱和氯化钠溶液洗涤3次,乙醇洗涤3次除去水合肼,在乙醇中重结晶得白色针状固体,过滤,干燥,得1,4-苯并二噁烷-5-羧酸酰肼6g。
步骤3:1.6g KOH溶于20ml乙醇,加入6g上步得到的酰肼,冰浴搅拌, 加入2mlCS2,冰浴反应15h。反应结束后,无水乙醚稀释,抽滤,得白色钾盐6.4g。然后将得到的盐溶于10ml水,加入30ml水合肼(85%),回流6-7h。反应结束后,冷却至室温,100ml水稀释,盐酸调PH至无固体析出。抽滤,水洗,乙醇重结晶得1,4-苯并二噁烷-5-羧酸三氮唑3.6g。
步骤4:用10ml乙醇溶解步骤3所得三氮唑,然后加入几滴冰醋酸,再向反应液中加入等摩尔量的苯甲醛,80℃回流,反应12h。反应结束后,冷却至室温,有大量白色或黄色固体析出,过滤得到产物粗品,将粗品用乙醇重结晶,得到产物,含1,4-苯并二噁烷的1,2,4-三氮唑类衍生物。
实验结果表明,本发明的新型含1,4-苯并二噁烷的1,2,4-三氮唑类衍生物对细菌具有明显的抑制作用。因此本发明的含1,4-苯并二噁烷的1,2,4-三氮唑类衍生物可以应用于制备抗菌药物。
具体实施方式
通过以下实施例进一步详细说明本发明,但本发明的范围并不受这些实施例的任何限制。
实施例1:(E)-5-(2,3-二氢[b][1,4]二噁烷-5-基)-4-((4-氟亚苄基)氨基)-4H-1,2,4-三氮唑-3-巯基的制备
用10ml乙醇溶解步骤3所得三氮唑,然后加入几滴冰醋酸,再向反应液中加入等摩尔量的对氟苯甲醛,80℃回流,反应12h。反应结束后,冷却至室温,有大量白色或黄色固体析出,过滤得到产物粗品,将粗品用乙醇重结晶,得到目标化合物。得到白色或浅黄色粉末,产率89%,mp:201-202℃;1H NMR(300MHz,DMSO-d6,δppm):4.23-4.26(d,J=8.92Hz,2H);4.28-4.29(d,J=3.96Hz,2H);6.82-6.97(m,2H);7.24-7.36(m,3H);7.82(m,2H);9.78(s,1H);13.52(s,1H).MS(ESI):386.40(C17H13FN4O2S,[M+H]+).Anal.Calcd for C17H12FN4O2S:C,57.29;H,3.68;N,15.72%;Found:C,57.22;H,3.61;N,15.69%.
实施例2:(E)-5-(2,3-二氢[b][1,4]二噁烷-5-基)-4-((4-氯亚苄基)氨基)-4H-1,2,4-三氮唑-3-巯基的制备
制备方法同实施例1。以对氯苯甲醛代替对氟苯甲醛,得到目标化合物。白色粉末,产率76%,mp:207-208℃;1H NMR(300MHz,DMSO-d6,δppm):4.21-4.24(d,J=8.22Hz,2H);4.27-4.30(d,J=7.38Hz,2H);6.88-6.94(m,2H);7.23-7.34(m,3H);7.86(m,2H);9.92(s,1H);13.41(s,1H).MS(ESI):372.83(C17H13FN4O2S,[M+H]+).Anal.Calcd for C17H12FN4O2S:C,54.77;H,3.51;N,15.03%;Found:C,54.82;H,3.52;N,15.24%.
实施例3:(E)-5-(2,3-二氢[b][1,4]二噁烷-5-基)-4-((4-溴亚苄基)氨基)-4H-1,2,4-三氮唑-3-巯基的制备
制备方法同实施例1。以对溴苯甲醛代替对氟苯甲醛,得到目标化合物。白色粉末,产率79%,mp:213-215℃;1H NMR(300MHz,DMSO-d6,δppm):4.22-4.24(d,J=5.21Hz,2H);4.25-4.28(d,J=8.51Hz,2H);7.04-7.08(m,2H);7.46-7.51(d,J=14.72Hz,2H);7.58(m,2H);9.98(s,1H);13.29(s,1H).MS(ESI):417.28(C17H13BrN4O2S,[M+H]+).Anal.Calcd forC17H12BrN4O2S:C,48.93;H,3.14;N,13.43%;Found:,C,48.88;H,3.13;N,13.29%.
实施例4:(E)-5-(2,3-二氢[b][1,4]二噁烷-5-基)-4-((4-甲基亚苄基)氨基)-4H-1,2,4- 三氮唑-3-巯基的制备
制备方法同实施例1。以对甲基苯甲醛代替对氟苯甲醛,得到目标化合物。白色粉末,产率86%,mp:203-205℃;1H NMR(300MHz,DMSO-d6,δppm):3.56(s,3H);4.25-4.27(d,J=4.67Hz,2H);4.34-4.37(d,J=7.85Hz,2H);6.85-6.89(m,2H);7.28-7.35(m,3H);7.76(m,2H);9.89(s,1H);13.64(s,1H).MS(ESI):352.41(C18H16N4O2S,[M+H]+).Anal.Calcd forC18H15N4O2S:C,61.35;H,4.58;N,15.90%;Found:C,61.41;H,4.57;N,15.78%.
实施例5:(E)-4-(亚苄基)-5-(2,3-二氢[b][1,4]二噁烷-5-基)-4H-1,2,4-三氮唑-3-巯基的制备
制备方法同实施例1。以无取代苯甲醛代替对氟苯甲醛,得到目标化合物。白色粉末,产率80%,mp:201-202℃;1H NMR(300MHz,DMSO-d6,δppm):4.24-4.28(d,J=9.59Hz,2H);4.32-4.36(d,J=8.32Hz,2H);6.79-6.86(m,2H);7.28-7.35(m,3H);7.84(m,2H);9.92(s,1H);13.61(s,1H).MS(ESI):338.38(C17H13N4O2S,[M+H]+).Anal.Calcd for C17H12N4O2S:C,60.34;H,4.17;N,16.56%;Found:C,62.41;H,4.16;N,16.47%.
实施例6:(E)-5-(2,3-二氢[b][1,4]二噁烷-5-基)-4-((4-甲氧基亚苄基)氨基)-4H-1,2,4-三氮唑-3-巯基的制备
制备方法同实施例1。以对甲氧基苯甲醛代替对氟苯甲醛,得到目标化合物。白色粉末,产率82%,mp:197-199℃;1H NMR(300MHz,DMSO-d6,δppm):3.67(s,3H);4.13-4.16(d,J=10.32Hz,2H);4.31-4.35(d,J=9.23Hz,2H);6.88-6.92(m,2H);7.34-7.39(m,3H);7.81(m,2H);9.72(s,1H);13.49(s,1H).MS(ESI):348.41(C18H16N4O3S,[M+H]+).Anal.Calcd forC18H15N4O3S:C,58.68;H,4.38;N,15.21%;Found:C,58.75;H,4.37;N,15.33%.
实施例7:含1,4-苯并二噁烷的1,2,4-三氮唑类衍生物抗菌活性研究
1.实验材料和方法
1.1药品与试剂
Mueller-Hinton培养基(牛肉浸粉5g,酪蛋白水解物17.5g,淀粉1.5g,琼脂12.5g,加入1000mL蒸馏水中)、卡那霉素、青霉素、DMSO、MTT(3-(4,5-二甲基噻唑-2)-2,5-二苯基四氮唑溴盐,商品名为噻唑蓝)、异丙醇、盐酸、均为分析纯试剂、合成的化合物1-6、PBS缓冲液(磷酸盐缓冲液0.01mol/L,pH7.4,Na2HPO4.12H2O 2.9g,KH2PO4 0.2g,NaCl 8.0g,KCl0.2g,蒸馏水1000mL)。
1.2菌种
大肠杆菌(E.coli)、金黄色葡萄球菌(S.aureus)、枯草芽孢杆菌(B.subtilis)、铜绿假单胞菌(P.aeruginosa)
1.3实验方法
1.3.1培养基的配制
取牛肉浸粉5g,酪蛋白水解物17.5g,淀粉1.5g,琼脂12.5g,加入1000mL蒸馏水中,加热煮沸溶解,分装,121℃高压灭菌15分钟备用。
1.3.2试验菌的培养
在无菌室内,取大肠杆菌,金黄色葡萄球菌,枯草芽孢杆菌和铜绿假单胞菌四种试验菌株,于酒精灯下用接种针分别在四种试验菌株斜面上,刮取少量斜面菌苔,用一定量的无菌水制成菌悬液,然后取一定量加到已融化又冷却至50℃左右的MH培养基中,摇匀,即刻倒入无菌培养皿中,待充分冷凝后用胶塞密封后,于37℃培养18-24小时备用。吸取菌液1mL,用MH培养基按1∶1000稀释,使菌液浓度约为105cfu/mL。
1.3.3抗菌实验:
将待测药品溶于DMSO中配制成2mg/mL的溶液,然后用二倍稀释法将药品稀释成一定浓度梯度(50μg/mL,25μg/mL,12.5μg/mL,3.125μg/mL)与DMSO中。于灭菌微量滴定板第一条中分别加入100μL的培养基,第二条为阳性对照,加入100μL菌悬液。其余的孔中加入90μL的菌悬液和10μL的药物溶液。每个药物溶液浓度平行3次。在微量滴定板底部标明细菌名称。将处理完的培养皿于37℃培养24h,观察。
1.3.4 MIC的测定
在每个微量滴定板都可以直观的测定其MIC值之后,在板的每个孔中加入50μLPBS缓冲液(磷酸盐缓冲液0.01mol/L,pH7.4,Na2HPO4.2H2O 2.9g,KH2PO4 0.2g,NaCl 8.0g,KCl 0.2g,蒸馏水1000mL),其中包含2mg MTT/mL。在室温下继续孵育4-5h。将孔中的物质移出并加入100μL含有5%1mol/L HCl的异丙醇来萃取染料。继续在室温下孵育12h,用酶标仪测定各孔光吸收(OD值),测定波长550nm。根据各孔OD值计算药物对细菌生长的最小抑制浓度。
最小抑制浓度(minimum inhibitory concentration,MIC):在特定环境下孵育24小时,可抑制某种微生物出现明显增长的最低药物浓度即最小抑制浓度,根据测定的光密度(OD值),制作细菌生长抑制率的标准曲线,在标准曲线上求得其对应的药物浓度。
测得的MIC见表1所示。
2.实验结果
表1本发明所列含1,4-苯并二噁烷的1,2,4-三氮唑类衍生物对细菌的抑制MIC值(μg/mL)
Kanamycin;Penicillin:阳性对照。

Claims (3)

1.含1,4-苯并二噁烷的1,2,4-三氮唑类衍生物,其特征是它有如下通式:
式中R为:
2.一种制备权利要求1所述的含1,4-苯并二噁烷的1,2,4-三氮唑类衍生物的方法,其特征是它由下列步骤组成:
步骤1.于50ml乙醇中加入10g 1,4-苯并二噁烷-5-羧酸溶解,缓慢滴入3ml浓硫酸,80℃回流,反应10h,反应结束后,蒸干溶剂,加入20ml乙酸乙酯,饱和氯化钠洗涤3次,无水硫酸钠干燥,快速柱层析,得无色透明油状液体1,4-苯并二噁烷-5-羧酸乙酯;
步骤2.用20ml乙醇溶解1,4-苯并二噁烷-5-羧酸乙酯,然后加入85%水合肼30ml,80℃回流,反应24h,反应结束后,冷却至室温后大量白色固体析出,饱和氯化钠溶液洗涤3次,乙醇洗涤3次除去水合肼,在乙醇中重结晶得白色针状固体,过滤,干燥,得1,4-苯并二噁烷-5-羧酸酰肼6g;
步骤3:1.6g KOH溶于20ml乙醇,加入6g上步得到的酰肼,冰浴搅拌,加入2ml CS2,冰浴反应15h,反应结束后,无水乙醚稀释,抽滤,得白色钾盐6.4g,然后将得到的盐溶于10ml水,加入30ml 85%水合肼,回流6-7h,反应结束后,冷却至室温,100ml水稀释,盐酸调PH至无固体析出,抽滤,水洗,乙醇重结晶得1,4-苯并二噁烷-5-羧酸三氮唑3.6g;
步骤4:用10ml乙醇溶解步骤3所得三氮唑,然后加入几滴冰醋酸,再向反应液中加入等摩尔量的苯甲醛,80℃回流,反应12h,反应结束后,冷却至室温,有大量白色或黄色固体析出,过滤得到产物粗品,将粗品用乙醇重结晶,得到产物,含1,4-苯并二噁烷的1,2,4-三氮唑类衍生物。
3.根据权利要求1所述的含1,4-苯并二噁烷的1,2,4-三氮唑类衍生物在制备抗菌药物中的应用。
CN201210339509.XA 2012-09-14 2012-09-14 含1,4‑苯并二噁烷的1,2,4‑三氮唑类衍生物及其制法与其抗菌活性 Expired - Fee Related CN103664910B (zh)

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