3-(N)-4-(Pyrazolo-4′,5′)-chinolin

Zusammenfassung Da bei Wiederholung der vonK. Eiter undMaria Nagy angegebenen Darstellung der Verbindung I diese in 59% iger Ausbeute erhalten werden konnte, wurde die Behauptung vonD. W. Ockenden undK. Schofield, wonach die Verbindung I nach unseren Angaben nicht herzustellen war, widerlegt.Weiters konnte bewiesen werden, daß eine vonSchofield undTheobald als 3-(Pyridyl-x)-lepidin bezeichnete Verbindung in Wirklichkeit die Verbindung I ist.     

Crystal Structure and Spectra Characters of 2-Benzoly-3-(4-(1,2,4-triazole)-5-anilino-thiophene and 2-(4-Methyl-benzoly)-3-(4- chlrolphenyl)-3-(1,2,4-triazole)-5-anilino-thiophene

Triazole derivatives are widely studied, because they represent the largest group of modern fungicides and are widely used both in human and veterinary therapy and in agriculture. We synthesized the title compound in which the thiophene ring was substituted by a 1,2,4-triazole group, a phenacyl group, a phenylaminol group and a benzene ring.     

4-(4-氨基苯基)-3-吗啉酮的合成

以乙醇胺为起始原料,通过环合、Goldberg藕联、还原,三步反应合成利伐沙班关键中间体4-(4-氨基苯基)-3-吗啉酮;该方法反应条件温和、生产成本低、绿色环保,具有良好的工业化前景。     

(3S,4S)-4-氨基-3-羟基-6-甲基庚酸的合成

价廉易得的L-亮氨酸先以苄基同时保护氨基及羧基得(S)-2-(二苄胺基)-4-甲基戊酸苄酯,进而在碱性条件下与乙腈发生亲核取代反应得(S)-4-(二苄胺基)-6-甲基-3-氧代庚腈,再经硼氢化钠选择性还原羰基得(3S,4S)-4-(二苄胺基)-3-羟基-6-甲基庚腈,用双氧水氧化得(3S,4S)-4-(二苄胺基)-3-羟基-6-甲基庚酸,最后在Pd(OH)2/C-H2作用下脱掉苄基得到(3S,4S)-4-氨基-3-羟基-6-甲基庚酸,即(3S,4S)-statine。整个合成路线总产率为33.6%。     

Crystal Structure of 3-Methyl-4-methoxy-3-(3-methyl-4- methoxy-2-benzofuranyl) -2-H-benzofuranyl

1　ＩＮＴＲＯＤＵＣＴＩＯＮ3ｍｅｔｈｙｌ4ｈｙｄｒｏｘｙｂｅｎｚｏｆｕｒａｎｉｓａｎｉｎｔｅｒｍｅｄｉａｔｅｕｓｅｄｆｏｒｔｈｅｓｙｎｔｈｅｓｉｓｏｆｎａｔｕｒｅｐｒｏｄｕｃｔｓ[1].Ｉｔｈａｓｂｅｅｎｓｙｎｔｈｅｓｉｚｅｄｆｒｏｍ1,3ｄｉｈｙｄｒｏｘｙｂｅｎｚｅｎｅ[2-3].Ｔｏｓｙｎｔｈｅｓｉｚｅａｂｉｅｔａｎｅｑｕｉｎｏｎｅｄｉｔｅｒｐｅｎｏｉｄｓｗｉｔｈｉｔ[4,5],ｗｅｉｎｔｅｎｄｅｄｔｏｐｒｏｔｅｃｔｔｈｅｈｙｄｒｏｘｙａｔｔａｃｈｅｄｔｏｉｔｗｉｔｈＭｅ2ＳＯ4.Ｆｉｎａｌｌｙ,ｔｗｏｃｏｍｐｏｕ…     

Synthesis of 3-(2-(4-Chlorophenylimino)-3-(4-chlorophenyl)-2,3-dihydrothiazol-4-yl)-2 h-Chromen-2-one via Multicomponent Approach

A simple and highly efficient one-pot, three-component synthesis of 3-(2-(4-chlorophenylimino)-3-(4-chlorophenyl)-2,3-dihydrothiazol-4-yl)-2H-chromen-2-ones has been reported by the reaction of 3-(2-bromoacetyl)-2H-chromen-2-one, primary amines, and phenyl isothiocyanates in presence of dimethylformamide as a solvent. The structures of newly synthesized compounds were confirmed by their analytical and spectral data.     

4-甲氧基-3-[3-(吗啉-4-基)丙氧基]苯甲腈的合成研究

以3-羟基-4-甲氧基苯甲醛为原料,在甲酸、甲酸钠、盐酸羟胺作用下,将醛基转化为氰基,在含有碳酸钾的DMF中,所得化合物与N-(3-氯丙基)吗啉反应得目标化合物,总收率为87.5%。产物结构由1HNMR表征。本方法具有操作简单、易于纯化、收率高等特点,为工业化生产提供实验基础。     

4-甲氧基-N-(4-(3-吗啉基丙氧基)苯基)-3-(4-(吡啶-3-基)嘧啶-2-基氨基)苯甲酰胺与人血清白蛋白的相互作用研究

应用分子对接模拟技术结合荧光猝灭法、同步荧光法、三维荧光法和紫外-可见光谱法,模拟生理条件(p H 7.4),在298 K和310 K温度下,研究了人血清白蛋白(HSA)与4-甲氧基-N-(4-(3-吗啉基丙氧基)苯基)-3-(4-(吡啶-3-基)嘧啶-2-基氨基)苯甲酰胺(1z)之间的相互作用。发现1z的加入引起了HSA内源荧光的静态猝灭,蛋白构象发生改变。理论研究与实验结果相结合研究了蛋白与药物的作用机理,从而为进一步寻找治疗慢性粒细胞白血病的药物小分子提供了实验依据。     

4-(4-氟苯基)-3-丁炔-1-醇的催化合成

设计合成了一种水溶性好、结构简单、性质稳定、安全无毒的高效含氮钯配合物催化剂[(NH2CH2COOH)2Pd Cl2],以对氟碘苯与3-丁炔-1-醇为起始原料,考察了溶剂、催化剂的用量、温度、时间和碱对Sonogashira偶联反应的影响,确定了最优反应条件,目标化合物分离产率高达96%。     

3-苯基喹唑啉-4(3H)-酮的合成及晶体结构

标题化合物C14H10ON2是由邻硝基苯甲酰苯胺与原甲酸三乙酯在低价钛试剂作用下反应而得。结构通过单晶X-射线衍射分析确定, 其晶体属于单斜晶系, 空间群P21/c, a = 12.080(2), b = 7.793(1), c = 11.599(1) ? b = 97.56(1), Mr = 222.24, V = 1082.4(2) ?, Dc = 1.364 g/cm3, Z = 4, m(MoKa) = 0.88 mm-1, F(000) = 464, R = 0.0385, wR = 0.0851。X-衍射分析表明: 平面I (C(1)~C(6))与平面II (C(9)~C(14))之间的夹角为124.38; 平面I与平面III (ON(1)?N(2)C(7)C(8)C(9)C(14))之间的两面角为125.47; 平面II与平面III之间的两面角为2.76。     

氯化锌催化合成3-取代-4(3H)-喹唑啉酮衍生物

室温、无溶剂条件下,氯化锌可有效催化邻氨基苯甲酸、原甲酸酯和胺三组分"一锅法"合成一系列3-取代-4(3H)-喹唑啉酮衍生物。考察了反应条件对产率的影响,确定优化反应条件为n酸:n酯:n胺=1∶1.2∶1.2,ZnCl21(mol)%。该方法条件温和,产率较高,操作简单,且对环境友好。产品结构经IR,1HNMR,元素分析进行表征。     

Characterization and crystal structures of solvated N′-(4-hydroxy-3-nitrobenzylidene)-3-methylbenzohydrazide and N′-(4-dimethyl-aminobenzylidene)-3-methylbenzohydrazide

Two new solvated benzohydrazone derivatives N′-(4-hydroxy-3-nitrobenzylidene)-3-methylbenzohydrazide-methanol-water (2/1/1) 2(C₁₅H₁₃N₃O₄)·CH₃OH·H₂O (1) and N′-(4-dimethylamino-benzylidene)-3-methylbenzohydrazide methanol monosolvate C₁₇H₁₉N₃O·CH₃OH (2) are prepared and characterized by elemental analysis, ¹H and ¹³C NMR, and single crystal X-ray diffraction. Compound 1 crystallizes in the monoclinic space group P2₁/c with unit cell dimensions a = 17.084(2) Å, b = 12.706(1) Å, c = 15.412(1) Å, β = 113.207(1)°, V = 3074.1(4) ų, Z = 4, R ₁ = 0.0567, and wR ₂ = 0.1209. Compound 2 crystallizes in the monoclinic space group P2₁/n with unit cell dimensions a = 15.058(1) Å, b = 6.658(1) Å, c = 17.211(2) Å, β = 94.189(2)°, V = 1720.8(3) ų, Z = 4, R ₁ = 0.0611, and wR ₂ = 0.1594. X-ray diffraction indicates that the asymmetric unit of 1 contains two independent benzohydrazone molecules, one methanol and one water molecules. The asymmetric unit of 2 contains one benzohydrazone molecule and one methanol molecule. Benzohydrazone molecules of the compounds display trans configurations with respect to the C=N double bonds. The crystal structures of the compounds are stabilized by hydrogen bonds and weak π...π interactions.     

2-(4-甲硫苯氧基)-3-(4-甲苯基)-4H-咪唑啉-4-酮衍生物的合成及杀菌活性(Ⅱ)

用烯基膦亚胺与4-甲苯基异氰酸酯、对甲硫苯酚的串联aza-Wittig反应合成了2-(4-甲硫基苯氧基)-3-(4-甲苯基)-4H-咪唑啉-4-酮衍生物.探讨了反应进行的条件和产物的波谱性质,提出了可能的环化反应机理.生成的环化产物均为新的化合物,其结构经元素分析、IR、1H NMR和MS确证.并探讨了所合成的新型杂环化合物的生物活性,结果表明部分化合物表现出良好的抑菌活性,其中3f的活性最好,在质量分数为5×10-5浓度时,对稻瘟菌和苹果轮纹菌的抑制率均达到100%.     

Synthesis and Crystal Structure of Rctt-1-(2-benzoxazolyl)-2-(4-chlorophenyl)-4-phenyl-3-(4-pyridinyl)cyclobutane

1INTRODUCTIONThephotodimerizationof1,2-bisarylethenederivativesisaconvenientwayforsynthesizingtetraarylsubstitutedcyclobutane.Forthisreason,thephotochemistryofstilbeneandstyrylpyridinederivativeshasbeenextensivelystudied[1,2].UpontheirradiationwithUVlight(?=300～400nm),thesemonomersareconvertedtohead-to-tailphotodimersinpolarsolventwithperfectyields.Inrecentyears,ourgrouphasbeenstudyingthephotodimerizationreactionsofheteroarylethenescontainingbenzoxazolyl[3]andphenyloxazolyl[4]groups.Itw…     

(R)-4-氰基-3-羟基丁酸乙酯的合成

研究了一条新的路线用于他汀类药物的重要中间体(R)-4-氰基-3-羟基丁酸乙酯的合成. 以廉价、易得的L-(－)-苹果酸为起始原料, 经酯化、还原、溴代和氰化四步反应得到目标化合物(R)-4-氰基-3-羟基丁酸乙酯, 合成总收率为56.7%. 所有中间体和最终产物均由ESI-MS, 1H NMR和13C NMR光谱及比旋光度表征并与文献值比较. 该方法原料易得、操作简便、收率良好, 产物容易分离纯化, 是一条适合大规模制备(R)-4-氰基-3-羟基丁酸乙酯的新合成工艺路线.     

Crystal and molecular structures of (3Z)-(±)-4-(2′-hydroxypropyl)amino-and (3Z)-4-(2′-hydroxyethyl)amino-pent-3-en-2-ones

An X-ray study of (3Z)-(±)-4-(2′-hydroxypropyl)amino-and (3Z)-4-(2′-hydroxyethyl)amino-pent-3-en-2-ones is reported. The bond lengths inside the H ring are equalized due to the classical N-H...O hydrogen bond between the carbonyl oxygen and the amino group. In the 4-(2′-hydroxyethyl)amino-pent-3-en-2-one crystal, due to the classical N-H...O bonds, infinite zigzag chains are formed along the 0b axis and arranged into a layered structure due to the weak C-H...O interactions. In (±)-4-(2′-hydroxypropyl)aminopent-3-en-2-one crystal, however, centrosymmetric dimers are formed, which are then linked by weak C-H...O intermolecular interactions to form a layered structure along the a0b plane.     

反相高效液相色谱检测2-(3-硝基-4-联苯基)丙腈和2-(4-氨基-3-硝基苯基)丙腈

氟比洛芬是一种高效低毒的消炎镇痛药物,该产品属国内空白,主要依赖进口.我们设计了以苯乙腈为起始原料合成氟比洛芬的新工艺路线,该路线中形成的中间体2-(3-硝基-4-联苯基)丙腈是导致最终产品收率及产品纯度的关键因素.对原料2-(4-氨基-3-硝基苯基)丙腈及中间体的高效液相色谱保留行为的研究文献尚未见报道.本文用反相高效液相色谱研究了两种化合物的保留行为,优选出了最佳分离条件,对指导实际生产具有一定意义.     

(2R，3R)-和(2S，3S)-2-(4-羟基-3-甲氧基)-3-羟甲基-1，4-苯并二氧六环-6-醛的对映选择性合成

1,4-苯并二氧六环木脂素类天然产物多数具有增加胆碱乙酰化酶和抗肝毒等活性 ,其活性主要源于 1 ,4-苯并二氧六环官能团 [1] . 1 ,4-苯并二氧六环木脂素的消旋全合成已有报道 [2 ] ,但其不对称合成还是空白[3] .我们发展了一条对映选择性合成 1 ,4-苯并二氧六环木脂素的简捷有效的路线 .基于前面的工作 [4 ] ,我们发现 1 ,4-苯并二氧六环醛类衍生物是合成此类天然产物的关键中间体 ,选择 2 - (4-羟基- 3-甲氧基 ) - 3-羟甲基 - 1 ,4-苯并二氧六环 - 6-醛 (1 )作为目标分子 ,其合成路线如下 :Reagents and conditions:( ) Me OH,H2 SO4,9…     

聚阴离子掺杂LiMnO_(2-y)X_y(X=BF_4~-,SiO_3~(2-),MoO_4~(2-),PO_4~(3-),BO_3~(3-))材料的合成及其电化学性能

采用水热法合成了聚阴离子掺杂LiMnO2-yXy(X=BF4-,SiO32-,MoO42-,PO43-,BO33-,y=0.01、0.03、0.05)锂离子电池正极材料。通过X射线粉末衍射(XRD)、X光电子能谱(XPS)、扫描电镜(SEM)和恒电流充放实验,研究了不同掺杂离子和掺杂量对产物结构和电化学性能的影响。结果表明,少量聚阴离子的掺杂未改变正交LiMnO2的晶体类型,但增大了材料晶胞体积,改善了材料的电化学循环性能。电化学交流阻抗(EIS)测试结果表明,聚阴离子掺杂增大了材料电荷转移阻抗,但明显提高了材料中Li+的扩散能力。     

Synthesis of Gingerenone C and 5-Hydroxy-1-(4′-hydroxy-3-methoxyphenyl)-7-(4′′-hydroxyphenyl)-3-heptanone

Diarylheptanoidsconstituteadistinctgroupofmetabolitesofnaturalplantcharacterizedbytwoaromaticringslinkedbyalinearsevenaliphaticchain.Therehavebeenfewreportsonthebiologicalactivitiesofdiarylheptanoids,mostofwhichappearingintheareasofanti-inflammatory,anti-oxidative,superoxidescavengingandanti-hepatotoxiceffects1,2.SomeofthemareusedastraditionalmedicineinAsia3.Compound1and2werefirstlyisolatedfromtherhizomesofZingiberofficalrespectively4,5.Sofarthesynthesisofthesetwocompoundshavenotbeenreportedy…