CN113354655A - 一种双苯并[5,6]螺环缩酮化合物及其制备方法 - Google Patents

一种双苯并[5,6]螺环缩酮化合物及其制备方法 Download PDF

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CN113354655A
CN113354655A CN202110585206.5A CN202110585206A CN113354655A CN 113354655 A CN113354655 A CN 113354655A CN 202110585206 A CN202110585206 A CN 202110585206A CN 113354655 A CN113354655 A CN 113354655A
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彭学东
张梅
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Zhangjiagang Weisheng Biological Medical Co ltd
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Abstract

本发明公开了一种双苯并[5,6]螺环缩酮化合物及其制备方法,属于有机合成技术领域。该双苯并[5,6]螺环缩酮化合物的结构式如下式所示,R1选自氢、卤素、卤代烷基、烷氧基、芳基、烷基中的任一种,R2选自氢、C1‑C5烷基中的任一种。其制备过程以炔丙醇甲酸甲酯衍生物和邻碘苄醇衍生物为原料,在配体、添加剂和有机溶剂存在的条件下、经金属催化剂催化发生反应,合成双苯并[5,6]螺环缩酮化合物。该方法极大缩短了合成周期,有效降低了合成成本,提高了生产效率,且工艺简单,原料廉价易得,反应时间短,产率良好,底物适用范围广,有利于工业化生产。

Description

一种双苯并[5,6]螺环缩酮化合物及其制备方法
技术领域
本发明属于有机合成技术领域,具体涉及一种双苯并[5,6]螺环缩酮化合物及其制备方法。
背景技术
[5,6]螺环缩酮结构是一种良好的药效基团,广泛存在于许多活性天然产物和生物分子中。其中,双苯并[5,6]螺环缩酮类化合物具有极其独特及良好的生物活性,如:papulacandins A具有很好的抗白色念珠菌活性;heliquinomycin显示出良好的抗肿瘤和抗微生物活性;β-rubromycin和γ-rubromycin再次极小浓度时即可抑制多种细菌和真菌的生长,还具有抑制哺乳动物DNA聚合酶的作用;purpuromycin对葡萄状球菌具有良好的抑制作用,其衍生物被认为是一种潜在的治疗阴道炎的药物。
李德海等人从真菌Spicaria elegans KLA03中分离得到了天然产物EleganketalA,结构鉴定表明Eleganketal A骨架是由双苯并[5,6]-螺环缩酮结构构成,核心骨架为3H-spiro[isobenzofuran-1,3′-isochroman],与常规的双苯并[5,6]-螺环缩酮骨架(3H-spiro[1-benzofuran-2,2′-chromane]骨架)不同。后续生物活性研究发现Eleganketal A的全甲基化衍生物具有良好的抗H1N1病毒活性,其IC50=149μM(病毒唑IC50=101μM)。
Figure BDA0003086967920000011
目前,具有3H-spiro[isobenzofuran-1,3′-isochroman]核心骨架的双苯并[5,6]螺环缩酮类化合物主要的合成方法有:1)强酸、强碱或者金属催化的分子内双羟基和羰基的缩酮化反应;2)双付克环化反应;3)过渡金属钯催化的环化反应。上述三种方法存在着以下明显的缺点:1)构环反应原料为炔二酚、二酚羟基酮或等同体,原料合成操作复杂,反应效率低,反应成本高;2)强酸强碱反应体系要求苛刻,对含有酸碱敏感官能团的化合物并不适用;3)反应所需催化剂价格昂贵,反应成本高。因此,寻找一种廉价、简洁、高效地合成具有3H-spiro[isobenzofuran-1,3′-isochroman]核心骨架的双苯并[5,6]螺环缩酮类化合物的方法具有十分重要的意义。
铜催化炔类化合物的环化反应是构筑碳环和杂环化合物的有效方法之一。该类型反应具有催化剂用量少、反应条件温和、产率及选择性高、操作简便、反应成本低廉等特点,并可用于工业化生产。目前,采用铜催化炔类化合物的环化反应主要集中在合成吲哚、苯并呋喃等杂环化合物方面,而由于双苯并[5,6]螺环缩酮类化合物结果的特殊性,至今还没有采用铜催化合成双苯并[5,6]螺环缩酮类化合物的相关报导。
发明内容
有鉴于此,本发明提供一种双苯并[5,6]螺环缩酮化合物及其制备方法,以炔丙醇甲酸甲酯衍生物和邻碘苄醇衍生物为原料,以铜为催化剂高区域选择性、专一性地有效合成了双苯并[5,6]螺环缩酮骨架。
为实现上述发明目的,本发明技术方案如下:
一方面,本发明提供一种双苯并[5,6]螺环缩酮化合物,结构式如式I所示:
Figure BDA0003086967920000021
其中,R1选自氢、卤素、卤代烷基、烷氧基、芳基、烷基中的任一种,R2选自氢、C1-C5烷基中的任一种。
优选的,R1选自氢、6'-氟、6'-氯、6'-甲氧基、6'-三氟甲基、7'-溴、7'-甲氧基、7'-苄氧基、8'-甲基、8'-氟、6',7'-并苯基、5',6',7'-三甲氧基中的任一种;R2选自氢或甲基。
进一步优选的,所述双苯并[5,6]螺环缩酮化合物为以下化合物中的任意一种:
Figure BDA0003086967920000031
更进一步优选为以下化合物的任一种:
Figure BDA0003086967920000032
最优选为
Figure BDA0003086967920000033
另一方面,本发明还提供上述双苯并[5,6]螺环缩酮化合物的制备方法,包括以下步骤:以炔丙醇甲酸甲酯衍生物和邻碘苄醇衍生物为原料,在配体、添加剂和有机溶剂存在的条件下、经金属催化剂催化发生反应,合成双苯并[5,6]螺环缩酮化合物。
优选的,所述炔丙醇甲酸甲酯衍生物为
Figure BDA0003086967920000041
所述邻碘苄醇衍生物为
Figure BDA0003086967920000042
其中,R1、R2与式I中的R1、R2相同。
进一步优选的,所述邻碘苄醇衍生物与炔丙醇甲酸甲酯衍生物的摩尔比为1:3-3:1;最优选为1:2.5。
进一步优选的,所述邻碘苄醇衍生物与催化剂的摩尔比为5:1-40:1;最优选为10:1。
进一步优选的,所述邻碘苄醇衍生物与配体的摩尔比为5:1:1-25:1;最优选为5:1。
进一步优选的,所述邻碘苄醇衍生物与添加剂的摩尔比为1:10-1:1;最优选为1:5。
优选的,所述反应温度为60-150℃,进一步优选为130℃。
优选的,所述反应时间为2-10h,进一步优选为4h。
优选的,所述金属催化剂为铜催化剂,包括但不限于氯化亚铜、溴化亚铜、碘化亚铜等或它们的混合物。
优选的,所述配体选自PPh3
Figure BDA0003086967920000043
Figure BDA0003086967920000044
中的至少一种。
优选的,所述添加剂选自碳酸钠、碳酸钾、碳酸铯、氟化钾、磷酸钾、
Figure BDA0003086967920000051
Figure BDA0003086967920000052
中的至少一种。
优选的,所述有机溶剂选自N,N-二甲基甲酰胺、二甲基亚砜、N-甲基吡咯烷酮、乙腈、四氢呋喃、三乙胺中的至少一种。
优选的,反应结束后,还包括步骤:
蒸馏水淬灭反应,乙酸乙酯萃取,饱和NH4Cl溶液洗涤有机相,无水硫酸钠干燥,减压旋干,柱层析分离得双苯并[5,6]螺环缩酮化合物。
本发明的有益效果为:
本发明的合成方法以炔丙醇甲酸甲酯衍生物和邻碘苄醇衍生物为原料,以铜为催化剂高区域选择性、专一性地有效合成了双苯并[5,6]螺环缩酮骨架,避免了多步反应的合成方法,极大缩短了合成周期,有效降低了合成成本,提高了生产效率,且工艺简单,原料廉价易得,反应时间短,产率良好,底物适用范围广,有利于工业化生产。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施例,进一步阐明本发明,但下述实施例仅为本发明的优选实施例,并非全部。基于实施方式中的实施例,本领域技术人员在没有做出创造性劳动的前提下所获得其它实施例,都属于本发明的保护范围。下述实施例中,若无特殊说明,所用的操作方法均为常规操作方法,所用设备均为常规设备,所用原料均为市售。
实施例1
在100毫升圆底烧瓶中加入4.5mmol的
Figure BDA0003086967920000053
(炔丙酯化合物)、1.8mmol的
Figure BDA0003086967920000061
(2-碘苄醇)、0.18mmol的CuI、0.36mmol的1,6-双(二苯基膦基)己烷、9mmol的Na2CO3及30毫升N-甲基吡咯烷酮,氮气氛围下,130℃反应4小时,TLC检测原料反应完全,蒸馏水淬灭反应,乙酸乙酯萃取,饱和NH4Cl溶液洗涤有机相,无水硫酸钠干燥,减压旋干,柱层析分离(石油醚:乙酸乙酯=8:1),得
Figure BDA0003086967920000062
产率62%。其物理常数为:
1H NMR(400MHz,CDCl3)δ7.76-7.74(m,1H),7.44-7.27(m,6H),7.14-7.12(m,1H),5.83(s,1H),5.32-5.29(d,J=12.8Hz,1H),5.28-5.24(d,J=15.0Hz,1H),5.20-5.17(d,J=12.8Hz,1H),5.08(s,1H),4.83-4.80(d,J=15Hz,1H);13C NMR(100MHz,CDCl3)δ140.4,140.3,139.8,134.1,130.8,129.2,127.9,127.6,127.2,124.3,124.0,123.7,121.1,111.3,109.6,71.7,63.7;FT-IR(KBr,cm-1)3365,3069,3035,2945,2860,1655,1597,1578,1461,1371,1230,1074,1053,1006,959,760;HRMS(ESI):m/z calcd for C17H15O2[M+H]+251.1067,found 251.1068.
实施例2
本实施例与实施例1的不同之处在于:反应物
Figure BDA0003086967920000063
取代为
Figure BDA0003086967920000064
制得化合物
Figure BDA0003086967920000065
产率54%,其物理常数为:
1H NMR(400MHz,d6-DMSO)δ7.38-7.33(m,2H),7.28-7.19(m,3H),7.12-7.10(d,J=7.2Hz,1H),6.76-6.74(d,J=7.6Hz,1H),5.63(s,1H),5.51(s,1H),5.19-5.12(d,J=13.1Hz,J=15.2Hz,2H),4.74-4.71(d,J=13.5Hz,1H),4.60-4.57(d,J=13.5Hz,1H),2.40(s,3H);13C NMR(100MHz,d6-DMSO)δ141.3,141.2,138.8,137.9,134.7,132.4,130.2,128.6,127.5,126.9,122.1,121.8,121.4,117.0,110.1,70.9,64.2,20.3;FT-IR(KBr,cm-1)3365,3071,3033,2965,2860,1633,1603,1460,1382,1223,1058,1007,971,760;HRMS(ESI):m/z calcd for C18H17O2[M+H]+265.1223,found 265.1222.
实施例3
本实施例与实施例1的不同之处在于:反应物
Figure BDA0003086967920000071
取代为
Figure BDA0003086967920000072
制得化合物
Figure BDA0003086967920000073
产率60%,其物理常数为:
1H NMR(400MHz,d6-DMSO)δ7.67-7.65(d,J=7.8Hz,1H),7.48-7.42(m,2H),7.39-7.34(m,2H),7.27-7.25(d,J=7.5Hz,1H),7.20-7.15(t,J=8.8Hz,1H),5.94(s,1H),5.18-5.15(d,J=13.1Hz,1H),5.11-5.07(d,J=13.1Hz,1H),5.01-4.97(d,J=15.4Hz,2H),4.92-4.88(d,J=15.4Hz,1H);13C NMR(100MHz,d6-DMSO)δ157.7(d,J=240Hz),140.4,138.6,138.6,132.9(d,J=5Hz),129.2,128.4(d,J=8Hz),127.4,123.5,121.4,121.0(d,J=17Hz),120.1(d,J=3Hz),114.0(d,J=20Hz),112.1,108.3,71.2,57.6(d,J=5Hz);FT-IR(KBr,cm-1)3434,3106,3044,2950,2864,1639,1612,1575,1462,1374,1239,1078,1048,994,956,757;HRMS(ESI):m/z calcd for C17H14FO2[M+H]+269.0972,found 269.0971.
实施例4
本实施例与实施例1的不同之处在于:反应物
Figure BDA0003086967920000074
取代为
Figure BDA0003086967920000075
制得化合物
Figure BDA0003086967920000076
产率69%,其物理常数为:
1H NMR(400MHz,d6-DMSO)δ7.67-7.64(dd,J=10.6Hz,J=2.5Hz,1H),7.45-7.42(m,2H),7.38-7.34(m,1H),7.27-7.21(m,2H),7.19-7.14(m,1H),5.97(s,1H),5.17-5.13(d,J=13.1Hz,1H),5.11-5.08(d,J=13.1Hz,1H),5.02-4.98(d,J=14.9Hz,1H),4.95(s,1H),4.77-4.73(d,J=14.9Hz,1H);13C NMR(100MHz,d6-DMSO)δ161.5(d,J=240Hz),140.3,139.3,139.2,132.6(d,J=8Hz),130.1(d,J=2Hz),129.2,127.5,126.7(d,J=8Hz),123.3,121.4,115.1(d,J=22Hz),112.8,110.3(d,J=22Hz),108.4,71.0,62.1;FT-IR(KBr,cm-1)3436,3102,2921,2867,1613,1585,1490,1460,1365,1229,1048,1001,959,768;HRMS(ESI):m/z calcd for C17H14FO2[M+H]+269.0972,found 269.0972.
实施例5
本实施例与实施例1的不同之处在于:反应物
Figure BDA0003086967920000081
取代为
Figure BDA0003086967920000082
制得化合物
Figure BDA0003086967920000083
产率62%,其物理常数为:
1H NMR(400MHz,d6-DMSO)δ7.87-7.87(d,J=2Hz,1H),7.46-7.41(m,2H),7.38-7.33(m,2H),7.24-7.21(m,2H),5.98(s,1H),5.16-5.13(d,J=13.0Hz,1H),5.10-5.07(d,J=13.0Hz,1H),5.01-4.98(d,J=15.3Hz,1H),4.94(s,1H),4.78-4.74(d,J=15.3Hz,1H);13C NMR(100MHz,d6-DMSO)δ140.3,139.1,138.9,132.8,132.5,131.9,129.2,127.7,127.4,126.5,123.7,123.3,121.3,112.8,108.5,71.1,62.2;FT-IR(KBr,cm-1)3433,3080,3047,2927,2850,1641,1593,1461,1363,1225,1047,1000,946,764;HRMS(ESI):m/z calcd forC17H14ClO2[M+H]+285.0677,found 285.0676.
实施例6
本实施例与实施例1的不同之处在于:反应物
Figure BDA0003086967920000084
取代为
Figure BDA0003086967920000085
制得化合物
Figure BDA0003086967920000086
产率53%,其物理常数为:
1H NMR(400MHz,d6-CDCl3)δ7.59-7.56(d,J=8.48Hz,1H),7.42-7.39(m,2H),7.36-7.25(m,4H),5.79(s,1H),5.28-5.25(d,J=12.7Hz,1H),5.20-5.13(m,2H),5.07(s,1H),4.75-4.71(d,J=15.1Hz,1H);13C NMR(100MHz,d6-CDCl3)δ140.3,139.4,139.3,136.0,130.3,129.7,129.3,127.7,127.2,125.8,123.6,121.9,121.1,111.8,109.3,71.8,63.0;FT-IR(KBr,cm-1)3394,3098,3076,2892,2856,1635,1590,1483,1466,1406,1369,1229,1047,994,954,759;HRMS(ESI):m/z calcd for C17H14BrO2[M+H]+329.0177,found329.0178.
实施例7
本实施例与实施例1的不同之处在于:反应物
Figure BDA0003086967920000091
取代为
Figure BDA0003086967920000092
制得化合物
Figure BDA0003086967920000093
产率57%,其物理常数为:
1H NMR(400MHz,d6-DMSO)δ8.03-8.01(d,J=8.2Hz,1H),7.65-7.62(m,2H),7.47-7.42(m,2H),7.38-73.4(td,J=7.6Hz,J=1.8Hz,1H),7.24-7.22(d,J=7.6Hz,1H),6.05(s,1H),5.18-5.15(d,J=13.2Hz,1H),5.12-5.05(m,3H),4.90-4.82(d,J=15.6Hz,1H);13CNMR(100MHz,d6-DMSO)δ140.3,139.0,138.9,135.0,134.4,129.2,128.0(d,J=32Hz),127.5,125.1,124.1(d,J=270Hz),123.7(d,J=4Hz),123.3,121.7(d,J=4Hz),121.4,114.0,108.6,71.1,62.3;FT-IR(KBr,cm-1)3433,3086,3051,2957,2879,1639,1616,1579,1504,1465,1363,1338,1164,1116,1047,997,958,759;HRMS(ESI):m/z calcd forC18H14F3O2[M+H]+319.0640,found 319.0939.
实施例8
本实施例与实施例1的不同之处在于:反应物
Figure BDA0003086967920000094
取代为
Figure BDA0003086967920000095
制得化合物
Figure BDA0003086967920000096
产率65%,其物理常数为:
1H NMR(400MHz,CDCl3)δ744-7.40(m,1H),7.37-7.32(m,3H),7.25-7.24(d,J=2.9Hz,1H),7.06-7.04(d,J=8.4Hz,1H),6.91-6.89(d,J=8.4Hz,J=2.5Hz,1H),5.80(s,1H),5.31-5.28(d,J=12.7Hz,1H),5.22-5.16(m,2H),5.10(s,1H),4.79-4.75(d,J=14.4Hz,1H),3.86(s,3H);13C NMR(100MHz,CDCl3)δ158.7,140.5,140.3,139.8,131.8,129.0,127.5,126.6,125.4,123.5,121.0,114.7,111.4,109.3,108.4,71.6,63.3,55.3;FT-IR(KBr,cm-1)3433,3055,3024,2909,2868,1636,1605,1579,1497,1462,1384,1338,1233,1050,1004,962,770;HRMS(ESI):m/z calcd for C18H17O3[M+H]+281.1172,found281.1174.
实施例9
本实施例与实施例1的不同之处在于:反应物
Figure BDA0003086967920000101
取代为
Figure BDA0003086967920000102
制得化合物
Figure BDA0003086967920000103
产率63%,其物理常数为:
1H NMR(400MHz,CDCl3)δ7.68-7.66(d,J=8.7Hz,1H),7.43-7.39(m,1H),7.35-7.32(m,3H),6.89-6.86(dd,J=8.7Hz,J=2.6Hz,1H),6.64-6.63(d,J=2.6Hz,1H),5.69(s,1H),5.30-5.27(d,J=12.6Hz,1H),5.25-5.21(d,J=14.7Hz,1H),5.19-5.16(d,J=12.6Hz,1H),4.94(s,1H),4.79-4.75(d,J=14.7Hz,1H),3.83(s,3H);13C NMR(100MHz,CDCl3)δ159.3,140.4,139.8,139.7,135.4,129.1,127.5,125.6,123.6,123.5,121.0,113.9,109.6,109.0,108.3,71.6,63.7,55.2;FT-IR(KBr,cm-1)3428,3055,3012,2925,2868,1632,1609,1579,1498,1462,1365,1249,1075,1006,961,766;HRMS(ESI):m/z calcdfor C18H17O3[M+H]+281.1172,found 281.1174.
实施例10
本实施例与实施例1的不同之处在于:反应物
Figure BDA0003086967920000104
取代为
Figure BDA0003086967920000111
制得化合物
Figure BDA0003086967920000112
产率60%,其物理常数为:
1H NMR(400MHz,CDCl3)δ7.69-7.67(d,J=8.7Hz,1H),7.47-7.40(m,5H),7.38-7.33(m,4H),6.97-6.94(dd,J=8.7Hz,J=2.4Hz,1H),6.72-6.72(d,J=2.1Hz,1H),5.70(s,1H),5.31-5.28(d,J=12.7Hz,1H),5.25-5.21(d,J=14.9Hz,1H),5.19-5.16(d,J=12.7Hz,1H),5.11(s,2H),4.95(s,1H),4.78-4.74(d,J=14.9Hz,1H);13C NMR(100MHz,CDCl3)δ158.6,140.4,139.8,139.7,136.7,135.4,129.1,128.5,127.9,127.5,127.3,125.6,123.8,123.6,121.0,114.7,109.6,109.5,109.2,71.6,70.0,63.7;FT-IR(KBr,cm-1)3402,3062,3033,2921,2861,1607,1574,1498,1382,1359,1277,1244,1074,1049,1005,958,758;HRMS(ESI):m/z calcd for C24H21O3[M+H]+357.1485,found 357.1484.
实施例11
本实施例与实施例1的不同之处在于:反应物
Figure BDA0003086967920000113
取代为
Figure BDA0003086967920000114
制得化合物
Figure BDA0003086967920000115
产率55%,其物理常数为:
1H NMR(400MHz,CD3COCD3)δ7.40-7.38(m,2H),7.33-7.30(m,2H),7.20-7.18(d,J=7.6Hz,1H),6.67(s,1H),6.21-6.21(d,J=1.5Hz,1H),5.18-5.18(d,J=1.5Hz,1H),5.17-5.08(dd,J=12.8Hz,J=21.5Hz,2H),4.97-4.93(d,J=14.4Hz,1H),4.62-4.58(d,J=14.4Hz,1H),3.87(s,2H),3.82(s,2H),3.80(s,2H);13C NMR(100MHz,CD3COCD3)δ154.1,153.6,142.9,142.1,141.3,139.0,133.0,129.6,128.1,124.2,121.9,118.8,115.7,111.1,104.6,71.9,64.3,60.9,60.2,56.3.FT-IR(KBr,cm-1)3455,2935,2861,1655,1596,1488,1461,1413,1358,1337,1278,1242,1118,1098,1048,1013,958,764;HRMS(ESI):m/zcalcd for C24H21O3[M+H]+341.1485,found 341.1484.
实施例12
本实施例与实施例1的不同之处在于:反应物
Figure BDA0003086967920000121
取代为
Figure BDA0003086967920000122
制得化合物
Figure BDA0003086967920000123
产率64%,其物理常数为:
1H NMR(400MHz,d6-DMSO)δ7.76-7.72(m,1H),7.43-7.21(m,6H),6.90-6.88(d,J=7.6Hz,1H),5.81-5.75(s,1H),5.20-4.85(m,4H),1.53-1.52(d,J=6.6Hz,3H);13C NMR(100MHz,d6-DMSO)δ141.0,140.9,140.3,139.8,139.7,139.6,138.6,138.3,130.6,130.4,128.9,128.8,128.2,128.0,127.3,127.2,127.1,127.0,124.8,124.3,124.0,123.9,123.5,122.3,121.6,121.2,110.9,110.0,109.0,107.9,70.8,70.2,67.3,23.1,20.4;FT-IR(KBr,cm-1)3367,3067,3032,2979,2931,2864,1632,1610,1576,1460,1372,1234,1106,1007,962,752;HRMS(ESI):m/z calcd for C18H17O2[M+H]+265.1223,found 265.1224.
实施例13
本实施例与实施例1的不同之处在于:反应物
Figure BDA0003086967920000124
取代为
Figure BDA0003086967920000125
制得化合物
Figure BDA0003086967920000126
产率56%,其物理常数为:
1H NMR(400MHz,CDCl3)δ7.43-7.39(m,1H),7.37-7.31(m,3H),7.17(s,1H),6.56(s,1H),5.98-5.96(dd,J=6.8Hz,J=1.2Hz,2H),5.61(s,1H),5.29-5.26(d,J=12.7Hz,1H),5.18-5.13(m,2H),4.95(s,1H),4.71-4.67(d,J=14.7Hz,1H);13C NMR(100MHz,CDCl3)δ147.7,147.2,140.3,140.1,139.7,129.1,128.4,127.5,124.6,123.6,121.0,109.7,109.3,104.1,103.9,101.0,71.6,63.7;FT-IR(KBr,cm-1)3372,3037,2905,2862,1625,1610,1561,1501,1482,1377,1355,1274,1243,1089,1038,957,937,756;HRMS(ESI):m/zcalcd for C18H15O4[M+H]+295.0965,found 295.0966.
实施例14
本实施例与实施例1的不同之处在于:反应物
Figure BDA0003086967920000131
取代为
Figure BDA0003086967920000132
制得化合物
Figure BDA0003086967920000133
产率55%,其物理常数为:
1H NMR(400MHz,CDCl3)δ8.21(s,1H),7.90-7.87(m,1H),7.82-7.80(m,1H),7.61(s,1H),7.51-7.46(m,2H),7.44-7.40(m,1H),7.35-7.27(m,3H),6.02(s,1H),5.40-5.33(m,2H),5.24-5.21(d,J=13.6Hz,2H),4.97-4.94(d,J=14.3Hz,1H);13C NMR(100MHz,CDCl3)δ141.5,140.5,140.0,132.8,132.8,132.6,130.2,129.0,128.1,127.6,127.3,126.4,125.8,123.3,123.1,122.5,121.0,113.2,109.9,71.7,64.0;FT-IR(KBr,cm-1)3432,3047,2919,2854,1638,1597,1499,1460,1370,1316,1229,1188,1094,1048,1002,957,855,758;HRMS(ESI):m/z calcd for C21H17O2[M+H]+301.1223,found 301.1225.
实施例15
在100毫升圆底烧瓶中加入0.6mmol的
Figure BDA0003086967920000134
(炔丙酯化合物)、1.8mmol的
Figure BDA0003086967920000135
(2-碘苄醇)、0.045mmol的CuBr、0.072mmol的
Figure BDA0003086967920000136
1.8mmol的氟化钾及30毫升四氢呋喃,氮气氛围下,60℃反应10小时,TLC检测原料反应完全,蒸馏水淬灭反应,乙酸乙酯萃取,饱和NH4Cl溶液洗涤有机相,无水硫酸钠干燥,减压旋干,柱层析分离(石油醚:乙酸乙酯=8:1),得
Figure BDA0003086967920000141
产率56%。其物理常数为:
1H NMR(400MHz,CDCl3)δ7.76-7.74(m,1H),7.44-7.27(m,6H),7.14-7.12(m,1H),5.83(s,1H),5.32-5.29(d,J=12.8Hz,1H),5.28-5.24(d,J=15.0Hz,1H),5.20-5.17(d,J=12.8Hz,1H),5.08(s,1H),4.83-4.80(d,J=15Hz,1H);13C NMR(100MHz,CDCl3)δ140.4,140.3,139.8,134.1,130.8,129.2,127.9,127.6,127.2,124.3,124.0,123.7,121.1,111.3,109.6,71.7,63.7;FT-IR(KBr,cm-1)3365,3069,3035,2945,2860,1655,1597,1578,1461,1371,1230,1074,1053,1006,959,760;HRMS(ESI):m/z calcd for C17H15O2[M+H]+251.1067,found 251.1068.
实施例16
在100毫升圆底烧瓶中加入5.4mmol的
Figure BDA0003086967920000142
(炔丙酯化合物)、1.8mmol的
Figure BDA0003086967920000143
(2-碘苄醇)、0.36mmol的CuCl、0.36mmol的
Figure BDA0003086967920000144
18mmol的
Figure BDA0003086967920000145
及30毫升N,N-二甲基甲酰胺,氮气氛围下,150℃反应2小时,TLC检测原料反应完全,蒸馏水淬灭反应,乙酸乙酯萃取,饱和NH4Cl溶液洗涤有机相,无水硫酸钠干燥,减压旋干,柱层析分离(石油醚:乙酸乙酯=8:1),得
Figure BDA0003086967920000146
产率58%。其物理常数为:
1H NMR(400MHz,CDCl3)δ7.76-7.74(m,1H),7.44-7.27(m,6H),7.14-7.12(m,1H),5.83(s,1H),5.32-5.29(d,J=12.8Hz,1H),5.28-5.24(d,J=15.0Hz,1H),5.20-5.17(d,J=12.8Hz,1H),5.08(s,1H),4.83-4.80(d,J=15Hz,1H);13C NMR(100MHz,CDCl3)δ140.4,140.3,139.8,134.1,130.8,129.2,127.9,127.6,127.2,124.3,124.0,123.7,121.1,111.3,109.6,71.7,63.7;FT-IR(KBr,cm-1)3365,3069,3035,2945,2860,1655,1597,1578,1461,1371,1230,1074,1053,1006,959,760;HRMS(ESI):m/z calcd for C17H15O2[M+H]+251.1067,found 251.1068.
对比例1
与实施例1不同的是,
Figure BDA0003086967920000151
用量为6mmol,得
Figure BDA0003086967920000152
产率26%,其物理常数为:
1H NMR(400MHz,CDCl3)δ7.76-7.74(m,1H),7.44-7.27(m,6H),7.14-7.12(m,1H),5.83(s,1H),5.32-5.29(d,J=12.8Hz,1H),5.28-5.24(d,J=15.0Hz,1H),5.20-5.17(d,J=12.8Hz,1H),5.08(s,1H),4.83-4.80(d,J=15Hz,1H);13C NMR(100MHz,CDCl3)δ140.4,140.3,139.8,134.1,130.8,129.2,127.9,127.6,127.2,124.3,124.0,123.7,121.1,111.3,109.6,71.7,63.7;FT-IR(KBr,cm-1)3365,3069,3035,2945,2860,1655,1597,1578,1461,1371,1230,1074,1053,1006,959,760;HRMS(ESI):m/z calcd for C17H15O2[M+H]+251.1067,found 251.1068.
对比例2
与实施例1不同的是,加入0.04mmol的CuI,得
Figure BDA0003086967920000153
产率18%,其物理常数为:
1H NMR(400MHz,CDCl3)δ7.76-7.74(m,1H),7.44-7.27(m,6H),7.14-7.12(m,1H),5.83(s,1H),5.32-5.29(d,J=12.8Hz,1H),5.28-5.24(d,J=15.0Hz,1H),5.20-5.17(d,J=12.8Hz,1H),5.08(s,1H),4.83-4.80(d,J=15Hz,1H);13C NMR(100MHz,CDCl3)δ140.4,140.3,139.8,134.1,130.8,129.2,127.9,127.6,127.2,124.3,124.0,123.7,121.1,111.3,109.6,71.7,63.7;FT-IR(KBr,cm-1)3365,3069,3035,2945,2860,1655,1597,1578,1461,1371,1230,1074,1053,1006,959,760;HRMS(ESI):m/z calcd for C17H15O2[M+H]+251.1067,found 251.1068.
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (10)

1.一种双苯并[5,6]螺环缩酮化合物,其特征在于,结构式如式I所示:
Figure FDA0003086967910000011
其中,R1选自氢、卤素、卤代烷基、烷氧基、芳基、烷基中的任一种,R2选自氢、C1-C5烷基中的任一种。
2.根据权利要求1所述的双苯并[5,6]螺环缩酮化合物,其特征在于,R1选自氢、6'-氟、6'-氯、6'-甲氧基、6'-三氟甲基、7'-溴、7'-甲氧基、7'-苄氧基、8'-甲基、8'-氟、6',7'-并苯基、5',6',7'-三甲氧基中的任一种;R2选自氢或甲基。
3.根据权利要求2所述的双苯并[5,6]螺环缩酮化合物,其特征在于,所述双苯并[5,6]螺环缩酮化合物为以下化合物中的任意一种:
Figure FDA0003086967910000012
优选为以下化合物的任一种:
Figure FDA0003086967910000013
最优选为
Figure FDA0003086967910000021
4.权利要求1-3任一项所述双苯并[5,6]螺环缩酮化合物的制备方法,其特征在于,包括以下步骤:以炔丙醇甲酸甲酯衍生物和邻碘苄醇衍生物为原料,在配体、添加剂和有机溶剂存在的条件下、经金属催化剂催化发生反应,合成双苯并[5,6]螺环缩酮化合物。
5.根据权利要求4所述的制备方法,其特征在于,所述炔丙醇甲酸甲酯衍生物为
Figure FDA0003086967910000022
所述邻碘苄醇衍生物为
Figure FDA0003086967910000023
其中,R1、R2与权利要求1-3任一项所述的R1、R2相同。
6.根据权利要求4所述的制备方法,其特征在于,所述邻碘苄醇衍生物与炔丙醇甲酸甲酯衍生物的摩尔比为1:3-3:1,优选为1:2.5;所述邻碘苄醇衍生物与催化剂的摩尔比为5:1-40:1,优选为10:1;所述邻碘苄醇衍生物与配体的摩尔比为5:1-25:1;优选为5:1;所述邻碘苄醇衍生物与添加剂的摩尔比为1:10-1:1,优选为1:5。
7.根据权利要求4所述的制备方法,其特征在于,所述反应温度为60-150℃,优选为130℃;所述反应时间为在2-10h,优选为4h。
8.根据权利要求4所述的制备方法,其特征在于,所述金属催化剂为铜催化剂。
9.根据权利要求4所述的制备方法,其特征在于,所述配体选自PPh3
Figure FDA0003086967910000031
Figure FDA0003086967910000032
中的至少一种。
10.根据权利要求4所述的制备方法,其特征在于,所述添加剂选自碳酸钠、碳酸钾、碳酸铯、氟化钾、磷酸钾、
Figure FDA0003086967910000033
中的至少一种。
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Title
WANG,LIANG,等: "Palladium-catalyzed intermolecular tandem cyclization reaction: a highly regioselective synthesis of functionalized 3H-spiro[isobenzofuran-1,3’-isochroman] scaffolds", 《ORGANIC & BIOMOLECULAR CHEMISTRY》, vol. 15, no. 11, 2 March 2017 (2017-03-02), pages 2403 - 2410 *

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