CN108117535A - 萘并[2,3-b]呋喃-4,9-二酮衍生物的制备方法 - Google Patents

萘并[2,3-b]呋喃-4,9-二酮衍生物的制备方法 Download PDF

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CN108117535A
CN108117535A CN201711386960.6A CN201711386960A CN108117535A CN 108117535 A CN108117535 A CN 108117535A CN 201711386960 A CN201711386960 A CN 201711386960A CN 108117535 A CN108117535 A CN 108117535A
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naphtho
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王翔
陈平
胡华友
支三军
韦长梅
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Huaiyin Normal University
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    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/77Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
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Abstract

本发明公开了一种萘并[2,3‑b]呋喃‑4,9‑二酮衍生物的制备方法,包括以下步骤:在25 mL圆底烧瓶中加入不同种类的2‑氨基‑5,10‑氧代‑4‑芳基‑5,10‑二氢‑4H‑苯并[g]苯并吡喃‑3‑腈和N‑氯代丁二酰亚胺以及无水乙醇,在室温下搅拌,TLC检测反应完全;反应结束后,减压除去溶剂,以乙酸乙酯、石油醚为淋洗剂柱层析。本发明方法的反应原料廉价易得,反应条件温和,节约能源,环境友好,反应选择性好,副反应少,易于纯化,收率高。

Description

萘并[2,3-b]呋喃-4,9-二酮衍生物的制备方法
技术领域
本发明涉及一种萘并[2,3-b]呋喃-4,9-二酮衍生物的制备方法。
背景技术
萘并[2,3-b]呋喃-4,9-二酮衍生物存在与许多天然产物中,具有重要的生物活性。例如,(S)-8-羟基-2-(1-羟基乙基)萘并[2,3-b]呋喃-4,9-二酮(化合物1)存在于腊肠树中,具有较好的抗癌活性。2-甲基萘并[2,3-b]呋喃-4,9-二酮(化合物2) 对日本脑炎病毒显示出较好的抗病毒活性。
现有文献中对萘并[2,3-b]呋喃-4,9-二酮衍生物的制备方法,归纳如下:
1)以4-氨基萘并呋喃衍生物为原料,在3当量亚硝基过硫酸钾和3当量磷酸二氢钾作用下,以丙酮和水为溶剂,在室温条件下反应2小时制得:
该方法的起始原料较难获得,且需要使用大量的氧化剂和助剂,产生较多的副产物。
2)以2-羟基-1,4-萘醌和查尔酮为原料,在1当量N-碘代丁二酰亚胺(NIS) 和2当量1,4-二氮杂二环[2.2.2]辛烷(DABCO)作用下,以乙腈为溶剂,在100℃条件下反应12小时制得:
该方法反应时间较长,反应条件较为苛刻,溶剂乙腈具有一定的毒性,且沸点为82℃,在100℃条件下反应,存在一定的安全隐患。
3)以2-羟基-1,4-萘醌、醛和异腈为原料,以甲苯为溶剂,在回流条件下反应4-48小时制得:
该方法使用的起始原料中的异腈组分价格昂贵,不易获得,溶剂甲苯具有一定的毒性,反应的温度较高,且需要回流时间较长。
发明内容
本发明的目的在于:提供一种萘并[2,3-b]呋喃-4,9-二酮衍生物的制备方法,该制备方法反应条件温和、副反应少、收率高、成本低。
本发明的技术解决方案是该萘并[2,3-b]呋喃-4,9-二酮衍生物的制备方法包括以下步骤:
步骤1:在25mL圆底烧瓶中加入1.0mmol的2-氨基-5,10-氧代-4-芳基-5,10-二氢-4H-苯并[g]苯并吡喃-3-腈和2mmol的N-氯代丁二酰亚胺以及无水乙醇2mL,在室温下搅拌,TLC检测反应完全;
步骤2:反应结束后,减压除去溶剂,以乙酸乙酯、石油醚为淋洗剂柱层析。
进一步的,所述步骤1中的2-氨基-5,10-氧代-4-芳基-5,10-二氢-4H-苯并[g] 苯并吡喃-3-腈中的芳基包括3-氰基苯基,4-甲基苯基,4-溴苯基和4-硝基苯基。
本发明的优点是:1、反应原料廉价易得;2、反应条件温和,节约能源,环境友好;3、反应选择性好,副反应少,易于纯化,收率高。
具体实施方式
下面结合具体实施例进一步说明本发明的技术解决方案,这些实施例不能理解为是对技术方案的限制。
实施例1:
步骤1:在25mL圆底烧瓶中加入2-氨基-5,10-氧代-4-(3-氰基苯基)-5,10-二氢-4H-苯并[g]苯并吡喃-3-腈(1.0mmol)和N-氯代丁二酰亚胺(2.0mmol)以及无水乙醇2mL,在室温下搅拌,TLC检测反应完全;
步骤2:反应结束后,减压除去溶剂,以乙酸乙酯、石油醚为淋洗剂柱层析,得2-氰基-2-甲酸乙酯基-3-(3-氰基苯基)-2,3,4,9-四氢萘并[2,3-b]呋喃-4,9-二酮,
产率:93%;浅黄色固体;
红外光谱(KBr,ν,cm-1):2236,1773,1686,1661,1651,1593, 1373,1353,1245;
核磁共振氢谱(CDCl3,400MHz)(δ,ppm):8.14-8.01(m,2H, Ar-H),7.92-7.88(m,5H,Ar-H),7.69(t,J=7.6Hz,1H,Ar-H),5.67(s,1H,CH),4.42 (dd,J=7.2Hz,2H,CH2),1.34(t,J=7.2Hz,3H,CH3);
核磁共振碳谱(CDCl3,100MHz)(δ,ppm):180.7,176.4,163.0, 159.4,137.3,135.1,134.7,134.5,133.3,133.2,132.7,132.1,130.6,126.5,126.3, 123.2,118.8,113.1,112.4,85.8,65.2,54.9,14.1.
实施例2:
步骤1:在25mL圆底烧瓶中加入2-氨基-5,10-氧代-4-(4-甲基苯基)-5,10-二氢 -4H-苯并[g]苯并吡喃-3-腈(1.0mmol)和N-氯代丁二酰亚胺(2.0mmol)以及无水乙醇2mL,在室温下搅拌,TLC检测反应完全;
步骤2:反应结束后,减压除去溶剂,以乙酸乙酯、石油醚为淋洗剂柱层析,得2-氰基-2-甲酸乙酯基-3-(4-甲基苯基)-2,3,4,9-四氢萘并[2,3-b]呋喃-4,9-二酮,
产率:90%;黄色固体;
红外光谱(KBr,ν,cm-1):1758,1683,1654,1643,1593,1374, 1352,1274;
核磁共振氢谱(CDCl3,400MHz)(δ,ppm):8.09(d,J=8.0Hz,1H, Ar-H),7.90-7.86(m,3H,Ar-H),7.36(d,J=7.6Hz,2H,Ar-H),7.22(d,J=7.6Hz,2H, ArH),5.46(s,1H,CH),4.43-4.36(m,2H,CH2),2.33(s,3H,CH3),1.32(t,J=7.2Hz, 3H,CH3);
核磁共振碳谱(CDCl3,100MHz)(δ,ppm):180.7,176.4,163.4, 158.7,138.8,135.1,134.4,132.7,132.6,132.0,129.9,129.3,126.5,126.3,124.3, 113.2,86.1,65.0,55.5,21.3,14.1.
实施例3:
步骤1:在25mL圆底烧瓶中加入2-氨基-5,10-氧代-4-(4-溴苯基)-5,10-二氢-4H-苯并[g]苯并吡喃-3-腈(1.0mmol)和N-氯代丁二酰亚胺(2.0mmol)以及无水乙醇2mL,在室温下搅拌,TLC检测反应完全;
步骤2:反应结束后,减压除去溶剂,以乙酸乙酯、石油醚为淋洗剂柱层析,得2-氰基-2-甲酸乙酯基-3-(4-溴苯基)-2,3,4,9-四氢萘并[2,3-b]呋喃-4,9-二酮,
产率:97%;浅黄色固体;
红外光谱(KBr,ν,cm-1):1762,1694,1685,1660,1594,1491, 1375,1347,1293,1251;
核磁共振氢谱(CDCl3,400MHz)(δ,ppm):8.10-7.86(m,5H, Ar-H),7.64(d,J=8.0Hz,2H,Ar-H),7.50(d,J=8.0Hz,2H,Ar-H),5.57(s,1H,CH), 4.43-4.39(m,2H,CH2),1.33(t,J=6.8Hz,3H,CH3);
核磁共振碳谱(CDCl3,100MHz)(δ,ppm):180.7,176.3,163.2, 159.1,135.1,135.0,134.4,132.7,132.3,132.0,131.8,126.5,126.3,123.7,122.9, 113.1,85.8,65.1,55.0,14.1.
实施例4:
步骤1:在25mL圆底烧瓶中加入2-氨基-5,10-氧代-4-(4-硝基苯基)-5,10-二氢 -4H-苯并[g]苯并吡喃-3-腈(1.0mmol)和N-氯代丁二酰亚胺(2.0mmol)以及无水乙醇2mL,在室温下搅拌,TLC检测反应完全;
步骤2:反应结束后,减压除去溶剂,以乙酸乙酯、石油醚为淋洗剂柱层析,得2-氰基-2-甲酸乙酯基-3-(4-硝基苯基)-2,3,4,9-四氢萘并[2,3-b]呋喃-4,9-二酮,
产率:80%;浅黄色固体;
红外光谱(KBr,ν,cm-1):1750,1685,1654,1643,1592,1560, 1528,1347,1292;
核磁共振氢谱(CDCl3,400MHz)(δ,ppm):8.30(d,J=8.8Hz,2H, Ar-H),8.11(d,J=6.0Hz,1H,Ar-H),7.91-7.86(m,5H,Ar-H),5.79(s,1H,CH), 4.44-4.42(m,2H,CH2),1.34(t,J=6.8Hz,3H,CH3);
核磁共振碳谱(CDCl3,100MHz)(δ,ppm):180.7,176.3,162.9, 159.3,148.4,142.8,135.2,134.5,132.6,132.0,131.3,126.6,126.3,124.3,123.4, 113.1,85.5,65.2,54.9,14.1。

Claims (2)

1.萘并[2,3-b]呋喃-4,9-二酮衍生物的制备方法,其特征是该制备方法包括以下步骤:
步骤1:在25mL圆底烧瓶中加入1.0 mmol的2-氨基-5,10-氧代-4-芳基-5,10-二氢-4H-苯并[g]苯并吡喃-3-腈和2.0 mmol的N-氯代丁二酰亚胺以及无水乙醇2 mL,在室温下搅拌,TLC检测反应完全;
步骤2:反应结束后,减压除去溶剂,以乙酸乙酯、石油醚为淋洗剂柱层析。
2.根据权利要求1所述的萘并[2,3-b]呋喃-4,9-二酮衍生物的制备方法,其特征是:所述步骤(1)中的2-氨基-5-氧代-4-芳基-4,5-二氢吡喃[3,2-c]苯并吡喃-3-氰基中的芳基包括3-氰基苯基,4-甲基苯基,4-溴苯基4-硝基苯基。
CN201711386960.6A 2017-12-20 2017-12-20 萘并[2,3-b]呋喃-4,9-二酮衍生物的制备方法 Pending CN108117535A (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
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CN104672224A (zh) * 2013-11-27 2015-06-03 广东东阳光药业有限公司 二氢嘧啶衍生物的制备方法及其中间体
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WO2017164379A1 (ja) * 2016-03-25 2017-09-28 大日本住友製薬株式会社 2-アルキルカルボニルナフト[2,3-b]フラン-4,9-ジオンの関連物質の製造方法、及びその関連物質

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104672224A (zh) * 2013-11-27 2015-06-03 广东东阳光药业有限公司 二氢嘧啶衍生物的制备方法及其中间体
CN106163284A (zh) * 2014-02-07 2016-11-23 北京强新生物科技有限公司 3‑取代的羰基萘并[2,3‑b]呋喃衍生物或其药学上可接受的盐
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