沙美特罗的合成

以对羟基苯基丙烯酸为原料,通过羟甲基化得到3-羟甲基-4-羟基苯基丙烯酸,然后对3-羟甲基-4羟基-苯基丙烯酸的双键加成上羟基,再把羧酸还原成醛基,然后与4-苯氧丁基己胺缩合得到亚胺,加氢还原得到目标产物。     

Efficient synthesis of functionalized bis-(4-oxo-1,3-thiazolan-5-ylidene)acetates

Reaction of 1-(2,2-dimethyl-propionyl)-3-{4-[3-(2,2-dimethyl-propionyl)thioureido]phenyl}thiourea or 1-(2,2-dimethyl-propionyl)-3-{5-[3-(2,2-dimethyl-propionyl)thioureido]naphthalen-1-yl}thiourea with dialkyl acetylenedicarboxylates in CH₂Cl₂ leads to alkyl (2-(2,2-dimethyl-propionylimino)-3-{4-[-(,2-dimethyl-propionylimino)-5-alkoxycarbonylmethylene-4-oxo-thiazolidin-3-yl]-phenyl}-4- oxo-thiazolidin-5-ylidene)acetates or alkyl (2-(2,2-dimethyl-propionylimino)-3-{5-[2-(2,2-dimethyl-propionylimino)-5-alkoxycarbonylmethylene-4-oxo-thiazolidin-3-yl]naphthalen-1-yl}-4-oxo-thiazo lidin-5-ylidene)acetates in good yields.     

龙眼核中的神经酰胺和脑苷脂的分离和鉴定

研究龙眼(Dimocarpus longan Lour.)果核的化学成分,采用硅胶柱色谱对龙眼果核石油醚提取物和体积分数95%乙醇提取物进行分离,并利用理化性质和光谱数据鉴定化合物的结构。从龙眼果核的提取物中分离得到一组混合神经酰胺(化合物1、2)和一组混合脑苷脂(化合物3～6),结构鉴定为Rel-(3S,4S,5S)-3-[(2'R)-2'-羟基二十二酰胺]-4-羟基-5-[(4″Z)-十四烷-4″-烯]-2,3,4,5-四氢呋喃(1)、Rel-(3S,4S,5S)-3-[(2'R)-2'-羟基二十四酰胺]-4-羟基-5-[(4″Z)-十四烷-4″-烯]-2,3,4,5-四氢呋喃(2)、1-O-(β-D-吡喃葡萄糖基)-(2S,3S,4R,8E)-2-(2'-羟基二十四酰胺)-8-十八烯-1,3,4-三醇(3)、1-O-(β-D-吡喃葡萄糖基)-(2S,3S,4R,8Z)-2-(2'-羟基二十四酰胺)-8-十八烯-1,3,4-三醇(4)、1-O-(β-D-吡喃葡萄糖基)-(2S,3S,4R,8E)-2-(2'-羟基二十二酰胺)-8-十八烯-1,3,4-三醇(5)、1-O-(β-D-吡喃葡萄糖基)-(2S,3S,4R,8Z)-2-(2'-羟基二十二酰胺)-8-十八烯-1,3,4-三醇(6)。     

4-(3'-氯苯氨基)-6-甲氧基喹唑啉类衍生物的合成、表征及抗癌活性

以N'-[5-(3-氯丙氧基)]-2-氰基-4-甲氧苯基-N,N-二甲基甲脒为原料,经过成环、醚化,合成了4个4-(3'-氯苯氨基)-6-甲氧基喹唑啉类化合物(Ⅰa～Ⅰd):N-(3'-氯苯基)-6-甲氧基-7-[3-(4-硝基苯氧基)丙氧基]喹唑啉-4-胺(Ⅰa)、N-(3'-氯苯基)-6-甲氧基-7-[3-(3-硝基苯氧基)丙氧基]喹唑啉-4-胺(Ⅰb)、4-{3-[4-(3'-氯苯胺基)-6-甲氧基喹唑啉-7-基氧基]丙氧基}-3-甲氧基苯甲醛(Ⅰc)、3-{3-[4-(3'-氯苯胺基)-6-甲氧基喹唑啉-7-基氧基]丙氧基}-4-甲氧基苯甲醛(Ⅰd),收率分别为51.3%、60.3%、85.4%、79.4%。产物的结构经IR、1HNMR、13CNMR、MS和元素分析表征。采用MTT法进行化合物抑制Bcap-37细胞的体外活性测试,结果表明,合成的化合物具有不同程度抑制Bcap-37细胞的活性,其中化合物Ⅰa在10μmol/L浓度下对Bcap-37细胞的抑制率为83.4%。     

新型含吡啶环二胺及其可溶透明性氟化聚酰亚胺的合成与表征

以4-三氟甲基苯甲醛和3-(4-硝基苯氧基)苯乙酮(m,p-NPAP)为原料,通过改进的Chichibabin反应制备了硝基化合物4-(4-三氟甲基苯基)-2,6-双[3-(4-硝基苯氧基)苯基]吡啶(m,p-3FPNPP),再用Pd/C和水合肼将m,p-3FPNPP进行还原,成功制备了一种新型含吡啶环的芳香二胺4-(4-三氟甲基苯基)-2,6-双[3-(4-胺基苯氧基)苯基]吡啶(m,p-3FPAPP)。以m,p-3FPAPP作为二胺,3,3′,4,4′-二苯醚四羧酸二酐(ODPA)作为二酐,N,N-二甲基甲酰胺(DMF)为溶剂,通过常规的两步法,经热或者化学亚胺化形成聚酰亚胺,制得了一种新型的含吡啶环聚酰亚胺。所得聚酰胺酸和聚酰亚胺的粘度分别为0.78 dL/g和0.65 dL/g。化学亚胺化所得的聚酰亚胺速溶于常见有机溶剂如DMF、N,N-二甲基乙酰胺(DMAc)、N-甲基-2-吡咯烷酮(NMP)、四氢呋喃(THF)等。制得了柔韧的聚酰亚胺膜,膜有很好的热稳定性,玻璃化转变温度(Tg)为234.4℃,氮气氛中10%失重温度为575.3℃,膜有很好的光学透明性,截止波长为369 nm,同时,膜还有较好的力学性能,拉伸强度为96.4 MPa,拉伸模量为1.63 GPa,断裂伸长率为9.2%,膜的吸水率为0.68%。     

尼洛替尼的合成研究

3-乙酰基吡啶与N,N-二甲基甲酰胺二甲缩醛反应制得(E)-3-二甲胺基-1-(3-吡啶基)-2-丙烯-1-酮,接下来与硝酸胍环合得4-(3-吡啶基)-2-胺基嘧啶,然后与3-溴-4-甲基苯甲酸乙酯缩合再经水解反应制得关键中间体4-甲基-3-[[4-(3-吡啶基)-2-嘧啶基]胺基]苯甲酸.此关键中间体直接与3-三氟甲...     

Synthesis,molecular docking and antibacterial evaluation of 2-(4-(4-aminophenylsulfonyl)phenylamino)-3-(thiophen-2-ylthio)naphthalene-1,4-dione derivatives

A new series of 2-(4-(4-aminophenylsulfonyl)phenylamino)-3-(thiophen-2-ylthio)naphthalene-1,4-dione derivatives (3a-3n) were synthesized and characterized by spectral techniques. To understand the interaction of binding sites with bacterial protein receptor, the docking study was performed by the GLIDE program and compound N-(4-(4-(1,4-dioxo-3-(thiophen-2-ylthio)-1,4-dihydronaphthalen-2-ylamino)phenylsulfonyl)phenyl)-3-methylbenzamide (3b) exhibited good glide and E model scores of ?5.89 and ?94.90, respectively. Moreover among all the molecules studied including the standards used, namely Sparfloxacin (4.8 μg/mL) and Norfloxacin (no inhibition observed) for their antibacterial property, compound N-(4-(4-(1,4-dioxo-3-(thiophen-2-ylthio)-1,4-dihydronaphthalen-2-ylamino)phenylsulfonyl)phenyl)-4-nitrobenzamide (3e) exhibited the lowest minimum inhibitory concentration (MIC) value of 1.3 μg/mL against Proteus vulgaris.     

一种新的α-(2-甲基-3-呋喃硫基)酮类香料化合物的制备方法

研究了以4-庚酮、5-壬酮和2,6-二甲基-4-庚酮为原料,通过烯醇化、氧化和亲核取代等反应,制备3-(2-甲基-3-呋喃硫基)-4-庚酮、4-(2-甲基-3-呋喃硫基)-5-壬酮和2,6-二甲基-3-(2-甲基-3-呋喃硫基)-4-庚酮3个香料化合物的方法.首先酮在碱性条件下与三甲基氯硅烷反应得到相应的烯醇硅醚,4-庚酮和5-壬酮形成烯醇硅醚产率均在80%以上,2,6-二甲基-4-庚酮形成烯醇硅醚产率略低,约70%.烯醇硅醚用间氯过氧苯甲酸氧化,得到α-羟基酮,产率均在85%左右.α-羟基酮与甲磺酰氯反应,得到相应的甲磺酸酯,然后在碱性条件下甲磺酸酯与2-甲基-3-呋喃硫醇反应生成α-(2-甲基-3-呋喃硫基)酮类香料化合物,产率在80%左右.最终产物通过1HNMR,13CNMR及MS进行了表征.     

新型多溴代水杨醛及其Schiff碱配体的合成与表征

以芳基硼酸和3-溴-5-叔丁基水杨醛为原料,经Suzuki偶联反应分别得到3-苯基-5-叔丁基水杨醛和3-(4-甲基苯基)-5-叔丁基水杨醛。3-苯基-5-叔丁基水杨醛在溴化反应时,发现不同温度下反应结果不同:分别生成一溴代产物3-(4-溴苯基)-5-叔丁基水杨醛和二溴代产物3-(4-溴苯基)-5-溴水杨醛。在50℃下,3-(4-甲基苯基)-5-叔丁基水杨醛经溴化得到三溴代产物3-(4-甲基-3,5-二溴苯基)-5-溴水杨醛,再经过与(S)-缬氨醇缩合后得到手性Schiff碱配体。通过红外、高分辨质谱、核磁共振等手段对其结构进行了表征。     

Synthesis and Biological Activity of the Four Stereoisomers of 4-Methyl-3-Heptanol: Main Component of the Aggregation Pheromone of Scolytus amygdali

Stereoisomers of 4-methyl-3-heptanol are major components of aggregation pheromones of bark beetles and trail pheromones of ants. Recently, (3S,4S)-4-methyl-3-heptanol (I) has been tentatively identified as the main component of the aggregation pheromone of the almond bark beetle, Scolytus amygdali (Coleoptera: Scolytidae). The four stereoisomers of 4-methyl-3-heptanol were prepared and bioassayed. Key steps included preparation of chiral 4-methyl-3-heptanones using SAMP and RAMP reagents, reduction to the corresponding alcohols, and stereospecific transesterification with vinyl acetate with lipase AK catalysis. In field tests, only (3S,4S)-4-methyl-3-heptanol attracted beetles in combination with the synergist (3S,4S)-4-methyl-3-hexanol, whereas (3R,4S)- and (3R,4R)-4-methyl-3-heptanols were inhibitory.     

合成苹果酯-B的催化剂研究进展

综述了硫酸铝,无水AlCl3、FeCl3、CuCl2、ZnCl2,固体超强酸SO2-4/ZrO2、SO2-4/TiO2、SO2-4/TiO2 La2O3、SO2-4/TiO2 MoO3、SO2-4/TiO2 WO3,固载杂多酸,H3PW12O40/PAn,TiSiW12O40/TiO2,HY型分子筛以及高分子复合催化剂FeCl3 AlCl3 UR等十余种不同催化剂催化合成苹果酯 B的实验结果。结果表明:硫酸铝,固体超强酸SO2-4/TiO2 La2O3、SO2-4/TiO2 WO3,活性炭固载的杂多酸(HPA/C)和高分子复合催化剂FeCl3 AlCl3 UR五种催化剂对苹果酯 B的收率较高,具有实际应用价值。     

3-(2,8,9-三氧杂-5-氮杂-1-锗三环[3.3.3.0]十一烷基)-3-(4-羟基-3-甲氧基苯基)丙酸的合成

以氧化锗、次亚磷酸钠、浓盐酸为原料经氧化还原反应合成三氯锗仿,三氯锗仿再与阿魏酸经麦克尔加成反应得到3-三氯锗基-3-(4-羟基-3-甲氧基苯基)丙酸,然后与甲醇钠反应生成3-三甲氧锗基-3-(4-羟基-3-甲氧基苯基)丙酸,再与三乙醇胺发生烷基转移反应生成标题化合物.     

Synthesis of substituted fatty oxathiolanes and thioethers from an allylic oxo fatty acid ester

Substituted oxathiolane and thioether derivatives have been synthesized from an allylic oxo fatty acid ester. The reaction of methyl 4-oxo-trans-2-octadecenoate with 3-mercaptopropan-1,2-diol (1-thioglycerol) affords methyl 4-(3′-hydroxymethyl-1′,4′-oxathiolane)-2(3)-(O-mercaptopropan-1″,2″-diol)-octadecanoate (II), methyl 4-oxo-2(3)-(O-mercaptopropan-1′,2′-diol)-octadecanoate (III), methyl 4-(3′-hydroxy-l′,5′-oxathiane)-2 (3)-(S-mercaptopropan-1″,2″-diol)-octadecanoate (IV), methyl 4-oxo-2(3)-(S-mercaptopropan-1′, 2′diol)-octadecanoate (V) and methyl 4-(3′-hydroxymethyl-1′, 4′-oxathiolane)-2(3)-(S-mercaptopropan-1″, 2″-diol)-octadecanoate (VI). Structures of the individual reaction products have been established on the basis of spectral data and microanalyses.     

Regioselective oxidation and halogenation of 2-(arylsulfenylimino)- and 2-(arylsulfinylimino)-4-thiazolines

The synthesis of 4-thiazoline 2-iminium sulfinates ( 3 ) is described. From the salts 3 and NBS the 2-(arylsulfonylimino)-4-thiazolines ( 4 ) were formed, which have also been prepared by oxidation of 2-(arylsulfenylimino)-4-thiazolines ( 5 ) and by reaction of the arylsulfonyl chlorides ( 6 ) with 2-imino-4-thiazolines ( 2 ). The treatment of 5 with NBS (or NIS) in dry solvents results in 2-(arylsulfenylimino)-5-bromo (or iodo)-4-thiazolines ( 7 ); in the presence of NaHCO₃ 2-(arylsulfonylimino)-5-bromo-4-thiazolines ( 8 ) are formed. 2-(Arylsulfinylimino)-4-thiazolines ( 10 ) have also been halo- genated in the same manner with NBS or NIS to give the products ( 11 ).     

Synthesis,Characterization and Anti-Breast Cancer Activity of New 4-Aminoantipyrine-Based Heterocycles

4-Aminoantipyrine was utilized as key intermediate for the synthesis of pyrazolone derivatives bearing biologically active moieties. The newly synthesized compounds were characterized by IR, ¹H- and ¹³C-NMR spectral and microanalytical studies. The compounds were screened as anticancer agents against a human tumor breast cancer cell line MCF7, and the results showed that (Z)-4-((3-amino-5-imino-1-phenyl-1H-pyrazol-4(5H)-ylidene)methylamino)-1,5-dimethyl-2-phenyl-1,2-dihydropyrazol-3-one 5, 3-(4-bromophenyl) -1-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-4-oxo-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile 13, 1-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1-Hpyrazol- 4-yl)-3-(4-iodophenyl)-4-oxo-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile 14, 3,3′-(4,4′-sulfonylbis(4,1-phenylene))bis(1-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol- 4-yl)-4-oxo-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile) 16, (Z)-1-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-2-hydrazono-4-oxo-3-phenyl-1,2,3,4-tetrahydropyrimidine-5-carbonitrile 17, (Z)-1-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-4-oxo-3-phenyl-2-(2-phenylhydrazono)-1,2,3,4-tetrahydro pyrimidine-5-carbonitrile 18, and (Z)-4-(3-amino-6-hydrazono-7-phenyl-6,7-dihydro pyrazolo[3,4-d]pyrimidin-5-yl)-1,5-dimethyl-2-phenyl-1,2-dihydropyrazol-3-one 19 were the most active compounds with IC₅₀ values ranging from 30.68 to 60.72 μM compared with Doxorubicin as positive control with the IC₅₀ value 71.8 μM.     

11βHSD1抑制剂1-(4-三氟甲氧基苯甲酰基)-4-(4-甲氧基苯甲酰基)哌啶的合成研究

以4-甲氧羰基哌啶盐酸盐(1)和对三氟甲氧基苯甲酰氯(2)为起始原料,在三乙胺的作用下以92.7%的收率制得1-(4-三氟甲基苯甲酰基)-4-甲氧羰基哌啶(3);化合物(3)在羰基二咪唑与N,O-二甲基羟胺盐酸盐(4)作用下,以89.9%的收率制得1-(4-三氟甲氧基苯甲酰基)-4-(N-甲基-N-甲氧基羰基)哌啶(5);化合物(5)和4-甲氧基苯基溴化镁(6)偶联,以60.1%的收率制得化合物1-(4-三氟甲氧基苯甲酰基)-4-(4-甲氧基苯甲酰基)哌啶(7)。三步反应总收率50.0%。     

沙奎那韦中间体合成工艺改进

治疗艾滋病的沙奎那韦的中间体———(3S,4 aS,8 aS)-2〔-(2R,3S)-3氨-基-2羟-基-4苯-基丁基〕-N-叔丁基-十氢异喹啉-3-羧酰胺(Ⅱ)是通过(2S,3S)-4氯--3羟-基-1苯-基丁烷-2氨-基甲酸苄酯(Ⅲ)和(3S,4 aS,8 aS)-N-叔丁基-十氢异喹啉-3-羧酰胺(Ⅴ)反应得到的。该文对工艺进行了如下改进:Ⅲ的环化和与Ⅴ的反应合并为“一锅煮”工艺,去除原有文献报道的柱层析过程,只需洗去氢氧化钾的分液操作,直接加入w(Pd)=10%的Pd/C催化剂,室温反应12 h即脱去保护基。反应完毕后,以乙腈重结晶即得到目标产物Ⅱ。改进后的工艺总产率达到87%,w(Ⅱ)=98.5%。该法原则上适用于多种H IV蛋白酶抑制剂的合成。     

N1-(2-苯基-1,2,3-三唑-4-甲酰基)-吡唑类衍生物的合成

利用２－苯基－１,２,３－三唑－４－甲酰肼（１）分别与３－芳基偶氮乙酰丙酮（２）和３－芳基偶氮乙酰乙酸乙酯（３）在酸性条件下环化,制得１２个新的Ｎ１－（２－苯基－１,２,３－三唑－４－甲酰基（－３,５－二甲基－４－芳基偶氮吡唑（４）和Ｎ１－（２－苯革－１,２,３－三唑－４－甲酰基）－３－甲基－４－芳基偶氮－２－吡唑啉－５－酮（５）,用元素分析、ＩＲ、＾１ＨＮＭＲ和ＭＳ确定了它们的结构。     

对氯-γ-溴丙苯的合成

提出了对氯－r-溴丙苯的合成方法,以对氯氯为原料制取对氯苄基氯化镁,通过镁过量解决了在四氢呋喃中的偶联问题,提高了格氏试验剂的收率,此格氏试剂与环氧乙烷反应得到氯－r-苯丙醇,然后在三氯甲烷助溶剂作用下,与过量的氢溴酸反应得到对氯－r－溴丙苯,文中优化得出了最佳合成条件,为工业化生产提供了理论依据。     

平行-连续法合成沙奎那韦

采用平行-连续法合成了H IV蛋白酶抑制剂沙奎那韦。在中间体(S)-4-氨基-4-氧代-2-(喹啉-2-羧酰胺基)丁酸的合成中,由喹哪啶-2-羧酸与亚硫酰氯反应得其酰氯作为活化剂,最佳反应条件为:回流8 h,收率95.0%;采用水介质合成了(S)-4-氨基-4-氧代-2-(喹啉-2-羧酰胺基)丁酸,收率82.0%。在硅胶存在下,(S)-1-〔(S)-2-环氧乙烷〕-2-苯基乙基氨基甲酸苄酯和(3S,4aS,8aS〕-N-叔丁基-十氢异喹啉-3-羧酰胺室温反应72 h,得(2S,3R)-4-〔(3S,4aS,8aS)-3-(叔丁氨甲酰基)-十氢异喹啉〕-3-羟基-1-苯基丁基-2-氨基甲酸苄酯,不经提纯,加入Pd/C〔w(Pd)=10%〕催化剂室温下与H2反应12 h脱去保护基,反应完毕后以乙腈重结晶即得另一中间体(3S,4aS,8aS)-2-〔(2R,3S)-3-氨基-2-羟基-4-苯基丁基〕-N-叔丁基-十氢异喹啉-3-羧酰胺,收率87.0%;两个中间体连接时,使用便宜、常见的N-羟基琥珀酰亚胺,收率82.0%。