新型多取代Trger’s base衍生物的合成及其晶体结构

以邻氨基二苯甲酮为原料,经两分子环化缩合反应制得6,12-二芳基二苯并[b,f][1,5]二氮杂环辛四烯(2a~2d);2a~2d经Li Al H4还原制得6,12-二芳基-5,6,11,12-四氢二苯并[b,f][1,5]二氮杂环辛(3a~3d);3a~3d与醛(或酮)反应,合成了一系列新型的多取代Trger’s base衍生物(4a~4d和5a~7a),其结构经1H NMR,13C NMR,HR-MS(ESI)和X-射线单晶衍射表征。通过分析架桥前后3a(CCDC:1498564)和6a(CCDC:1498555)的晶体结构,解释了该类化合物1H NMR中NCH质子及桥上取代基质子裂分的原因,并进一步证实了4~7为非C2轴对称结构。     

新型多取代Tr(o)ger's base衍生物的合成及其晶体结构

以邻氨基二苯甲酮为原料,经两分子环化缩合反应制得6,12-二芳基二苯并[b,f][1,5]二氮杂环辛四烯(2a~2d);2a~2d经LiAlH4还原制得6,12-二芳基-5,6,11,12-四氢二苯并[b,f][1,5]二氮杂环辛(3a~3d);3a~3d与醛(或酮)反应,合成了一系列新型的多取代Tr(o)ger's base衍生物(4a~4d和5a~7a),其结构经1H NMR, 13C NMR, HR-MS(ESI)和X-射线单晶衍射表征.通过分析架桥前后3a(CCDC: 1498564)和6a(CCDC: 1498555)的晶体结构,解释了该类化合物1H NMR中NCH质子及桥上取代基质子裂分的原因,并进一步证实了4~7为非C2轴对称结构.     

新型非对称二苯并[b,f][1,5]二氮杂环辛四烯的合成

以两种不同取代的2-氨基二苯甲酮为原料,氯苯为溶剂,BF3-Et2O为脱水剂,通过分子间脱水一步环化缩合制备非对称二苯并[b,f][1,5]二氮杂环辛四烯衍生物。运用HPLC监控反应过程,优化合成工艺,得到最佳反应条件为:等物质的量的两种不同取代2-氨基二苯甲酮和BF3-Et2O,在氯苯中回流反应12 h。化合物4a^4c为新化合物,其结构经1H NMR,13C NMR和MS(ESI)表征。     

1,7-双(N-取代氨基甲基)-2,8-二羟基-朝格尔碱的合成及其催化的Aldol-Ullmann反应（英文）

合成了新型1,7-双(N-取代氨基甲基)-2,8-二羟基-朝格尔碱(4),以4为催化剂催化了4-羟基香豆素和2-亚苄基丙二腈[或甲基(乙基)-2-氰基-3-苯基丙烯酸]的Aldol反应,获得了一系列化合物8;以4为配体与钯联合催化了串联Aldol-Ullmann反应,得到了化合物10和12.测试了所有化合物对人三阳性乳腺癌细胞(MCF-7)、人三阴性乳腺癌细胞(MDA-MB-231)、人肝癌细胞(HepG2)和人肝癌细胞(MHCC-97H)的抗癌活性以及对人肝细胞(LO2)的细胞毒性.其中,1,7-双((甲基氨基)甲基)-6H,12H-5,11-甲二苯并[b,f][1,5]二氮芳辛-2,8-二醇(4b)对MCF-7(抑制率>30%)、1,7-双((((1-苯乙基)氨基)甲基)-6H,12H-5,11-甲二苯并[b,f][1,5]二氮芳辛-2,8-二醇(4d)和1,7-双(((吡啶-2-基甲基)氨基)甲基)-6H,12H-5,11-甲基二苯并[b,f][1,5]重氮-2,8-二醇(4e)对MDA-MB-231具有较高的选择性和抑制活性, 2-氨基-5-氧代-4-(3,4,5-三甲氧...     

4,4'-二[N-(芘-1-基亚烃基)胺芳基]-2,2'-双噻唑的合成

以硝基苯乙酮为原料,经α-溴代、缩合和还原3步反应制得4,4'-二氨芳基-2,2'-双噻唑(3a,3c,3e);3a,3c和3e分别与酰基芘经缩合反应合成了6个新型的希夫碱——4,4'-二[N-(芘-1-基亚烃基)胺芳基]-2,2'-双噻唑(5a~5f),其结构经1H NMR,FT-IR和元素分析表征。5a~5f的熔点均300℃。     

新型1,4-苯并二氮杂?-5-酮三氟乙基和环丙基取代衍生物的合成及抗肿瘤活性初探

以邻硝基苯甲酸衍生物为底物,经3或4步反应,并在第3步关环反应中使用了乙酰丙酮钼和三氟甲磺酸铜作为催化剂,合成了10个新型的1,4-苯并二氮杂?-5-酮三氟乙基和环丙基取代衍生物（4a~4f, 5a~5b, 6a~6b）,其结构经¹H NMR, ¹³C NMR和HR-MS(ESI)表征。测试了目标化合物对慢性骨髓性白血病细胞、乳腺癌、肺癌和宫颈癌等4种肿瘤细胞系的抑制活性。结果表明：化合物2-（丙-1-烯-2-基）-4-（2,2,2-三氟乙基）-1,2,3,4-四氢-5H-苯并[e][1,4]二氮杂-5-酮（4a）对慢性骨髓性白血病细胞K562的IC50可达2.6 μM;目标化合物对肺癌A549、乳腺癌MDA-MB-231和宫颈癌HeLa细胞系也表现出一定的抑制活性。     

新型苯乙酰脒类化合物的合成及其感光性能

以氢化铝锂为还原剂,甲基叔丁基醚为溶剂,1,5-二氮杂双环[4.3.0]-5-壬烯(1)于55℃反应9 h制得1,5-二氮杂双环[4.3.0]壬烷(2),收率87.9%,纯度95.0%。2分别与溴代苯乙酮(3a),对甲氧基溴代苯乙酮(3b)和对溴基溴代苯乙酮(3c)进行消除反应合成了3个新型的苯乙酰基潜双环脒类化合物(4a~4c),其结构经1H NMR和LC-MS表征。采用正交实验对合成4a~4c的反应条件进行了优化。在最佳反应条件[以甲苯为溶剂,3a 25.2 mmol,n(3a)∶n(K2CO3)∶n(2)=1.0∶2.0∶1.4,于15℃反应24 h]下,1,5-二氮杂双环[4.3.0]-5-苯乙酰基壬烷(4a)收率89.0%,纯度87.9%。感光性能研究结果表明,1,5-二氮杂双环[4.3.0]-5-(4-甲氧基)苯乙酰基壬烷(4b)经紫外曝光400 mJ·cm-1,其引发性能最强,分解转化近45%;曝光2 000 mJ·cm-1,4b分解转化近90%。     

平面环辛四烯化合物研究Ⅰ.三苯并〔a,c,e〕环辛四烯衍生物的合成

以5,6-二溴-5,6-二氢二苯并[a,e]环辛四烯和叔丁醇钾及呋喃衍生物作用,随后经锂铝氢-四氯化钛一步去氧而生成了1-取代或1,4-二取代三苯并[a,c,e]环辛四烯衍生物,1,4-二甲基三苯并[a,c,e]环辛四烯经NBS溴化,Sommelet反应而生成1,4-二甲酰基化合物,随后在光照下和NBS反应再和甲醇反应而生成二酸二酯化合物,该化合物为制备1,1.4,4.5-二亚甲基三苯并[a,c,e]环辛四烯的可能中间体,二甲墓化合物和澳反应,随后和叔丁醇钾作用而得到了1,4-二甲墓-9-叔丁氧基三苯并[a,c,e]的环辛四烯,提出了有一个新的去氢环辛四烯中间体1,4-二甲基-9,10-二去氢三苯并[a,c,e]环辛四烯存在。     

新型三环系稠杂环[1,2,4]-三唑并[1,5-a][1]-苯并氮杂及[1,2,4]-三唑并[1,5-a]-喹啉的合成

α-四氢萘酮的乙氧羰基腙(1)经LTA氧化,得到α-偶氮-α-乙酰氧基化合物2.在A lC l3作用下,化合物2脱去乙酰氧基产生重氮正离子中间体3,再经与腈的1,3-偶极环加成、[1,2]-迁移扩环、碱性水解和与苦味酸作用,得到新型[1,2,4]-三唑并[1,5-a][1]苯并氮杂苦味酸盐6a~6c.以2,3-二氢-1-茚酮为底物,采用相同的合成路线,合成了1,2,4-三唑并[1,5-a]-二氢喹啉苦味酸盐12a~12c.     

Pd2(dba)3/BINAP催化合成[4,4′-(4,4′-二苯亚胺基)二苯甲酰胺基]二苯醚

在三乙胺催化下,4-溴苯甲酰氯与4,4′-二氨基二苯醚反应制得[4,4 ′-(4,4′-二溴)-二苯甲酰胺基]二苯醚(1);1与苯胺在Pd2 (dba) 3/BINAP催化下合成了新化合物——[4,4′-(4,4′-二苯亚胺基)二苯甲酰胺基]二苯醚,其结构经1 H NMR和FT-IR表征.     

A rapid and efficient access to diaryldibenzo[b,f][1,5]diazocines

2-Benzoylbenzoyl azides undergo facile cyclization under acidic conditions to give substituted dibenzo[b,f][1,5]-diazocines in good yields. This approach shortens the synthetic steps toward these compounds as compared with conventional methods. The mechanism of the diazocine synthesis is assumed to proceed by an unprecedented intermolecular [2 + 2] cyclization.     

General protocols for the synthesis of C(2)-symmetric and asymmetric 2,8-disubstituted analogues of Tröger's base via efficient bromine-lithium exchanges of 2,8-dibromo-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine

Methods for facile synthesis of symmetric and unsymmetric functionalized analogues of Tr?ger's base were developed with use of 2,8-dibromo-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine (2) as the starting material. C(2)-symmetric 2,8-disubstituted analogues of Tr?ger's base (4a-f) were synthesized via double bromine-lithium exchange of 2 followed by quench with electrophiles. Desymmetrization via single bromine-lithium exchange of 2, followed by quench with electrophiles, afforded asymmetric analogues of Tr?ger's base (6a-g). Further reaction of 2-bromo-8-(trimethylsilyl)-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine (6b) produced 7a-c via single bromine-lithium exchange and subsequent quench with electrophiles.     

Simple synthesis of quinolines and dibenzo[b,f][1,5]diazocines under microwave irradiation

Quinolines 3a–f, 5a–f, and dibenzo[b,f][1,5]diazocines 4, 6 were synthesized in the presence of 0.5 equiv. of diphenyl phosphate (DPP) under microwave irradiation. The obtained yield of 6,12-diphenyl-dibenzo[b,f][1,5]diazocine 4 was higher when using anhydrous DPP than when using HCl, H₃PO₄, and CH₃COOH.     

Synthesis of novel polydiazocine for electroactive materials based on diazocine

In this study, we successfully designed and synthesized a novel class of ladder‐type polymer polydi‐benzoyl[b,f][1,5]diazocine ( PBDA‐a ) and polydimethoxybenzoyl[b,f][1,5]diazocines ( PBDA‐b ) for novel electrochemical actuators via one‐pot polymerization. The structure of polymers was characterized using ¹³C NMR, FTIR and MALDI‐TOF. Both of the polydiazocines exhibited high thermal stability and excellent solubility in common solvent. Molecular conformation studies using the density functional theory method revealed that the conformational structure of PBDA‐a preferred to display zigzag conformation while PBDA‐b display helix conformation. The mechanism of the polydiazocine synthesis is assumed to condensation polymerization proceeding by an unprecedented cyclization of the isocyanate with the neighboring acyl group, followed by the dimerization to form diazocine ring. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013 , 51, 4694–4701     

纳米二氧化钛催化二苯并1,10-菲咯啉衍生物的合成研究

首次报道了纳米TiO_2催化1,2-环己二酮与2-氨基苯甲酰衍生物的串联Friedlander反应,合成了9个二苯并1,10-菲咯啉的衍生物(3a~3i),其中3b,3c,3e~3g和3i为新化合物,其结构经~1H NMR,~(13)C NMR和HRMS(ESI)表征。以6,7-二氢-5,8-二苯基苯并[1,10]菲咯啉(3a)的合成为例,对反应条件进行了优化。最佳反应条件为:锐钛型纳米二氧化钛用量为0.2 eq.,1a与2投料比为2.1∶1,乙腈为溶剂,于80℃反应7 h,收率83%。并对反应机理进行了探讨。     

Synthesis, Crystal Structure, Physical Properties, and Application of a Series of Functional Dibenzo[d,f][1,3]dioxepine Derivatives

The twisted aromatics, functional dibenzo[d,f][1,3]dioxepine derivatives were synthesized in high yields from reactions of 5,5＇-dibromo-2,2＇-biphenol with corresponding ketal or ketone compounds under acid catalysis. The structures of these compounds were characterized by ^1H NMR, elemental analysis, UV-Vis absorption spectrum and X-ray diffraction analysis. The conformation of O--C--O bridged biphenyl derivatives with varied substitute groups on 6,6＇-position was studied by X-ray crystallography and force-field simulation. The result of calculations by UNIVERSAL 1.02 force field in Cerius2 package（4.6） indicates that dibenzo[d,f][1,3]dioxepine derivatives show twisted conformations and the twisted angle between the phenyl rings is about 40°, which is accordant with the result from crystal structure determination, though the obtained angles in the crystal of dibenzo[d,f][1,3]dioxepine derivatives with the varied substitute groups on 6,6＇-position are shown to be slightly shifted to 40° owing to intermolecular interactions in crystal stacking. DSC studies exhibit that the substitute groups on 6,6＇-position can induce a large variation of endothermic peaks ranging from 80 to 135 ℃. The conjugated polymers based on dibenzo[d,f][1,3]dioxepine derivatives, which have ultraviolet emitting with a quantum efficiency of 10%, were obtained by Yamamoto coupling.     

Dibenzo[c,h][1,5]naphthyridinediones as topoisomerase I inhibitors: design, synthesis, and biological evaluation

Dibenzo[c,h][1,5]naphthyridinediones were prepared via a novel synthetic pathway. The compounds were designed as topoisomerase I (Top1) inhibitors based on the indenoisoquinoline series of drugs. The results of biological evaluation demonstrate that, unlike very closely related dibenzo[c,h][1,6]naphthyridinediones, dibenzo[c,h][1,5]naphthyridinediones retain the Top1 inhibitory activity of similarly substituted indenoisoquinolines.     

The water-soluble indolium-based fluorescence probes for detection of the extreme acidity or extreme alkalinity

In this work, 3,3′-(((1E,1′E)-(H,12H-5,11-methanodibenzo[b,f][1,5]diazocine-2,8-diyl)bis(ethene-2,1-diyl))bis(1,1-dimethyl-1H-benzo[e]indole-3-ium-2,3-diyl))bis(propane-1-sulfonate) (1), 3,3’-(((1E,1′E)-(6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine-2,8-diyl)bis(ethene-2,1-diyl))bis(3,3-dimethyl-3H-indole-1-ium-2,1-diyl))bis(propane-1-sulfonate) (2), 2,2’-((1E,1′E)-(6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine-2,8-diyl)bis(ethene-2,1-diyl))bis(1,3,3-trimethyl-3H-indol-1-ium) iodide (3) and 2,2’-((1E,1′E)-(6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine-2,8-diyl)bis(ethene-2,1-diyl))bis(1,1,3-trimethyl-1H-benzo[e]indol-3-ium) iodide (4) were designed and synthesized by ethylene bridging of the N-substituted indolium salts and the Tröger’s Base (TB) framework. The probes exhibited a longer absorption and emission wavelength and the emission wavelength of them in dichloromethane (DCM) was more than 600 nm, performed a red fluorescence. All of the probes could work on the extreme acidic and the extreme alkaline environments and showed a good liner response in the working pH range. Especially, 2 and 4 were soluble in water and manifested a good pH sensing in a water system. Also, ¹H NMR analysis illustrated how these dyes worked as the pH-sensitive fluorescence probes. In addition, they performed excellent reversibility, high selectivity and good photostability.