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刘风雷 《国外医学(药学分册)》1989,(3)
本文报道用三阶导数光谱法测定吲哚美辛中的分解产物5-甲氧基-2-甲基吲哚-3-乙酸。方法简便、快速,测定结果的相对标准偏差约为2%。标准曲线:配制浓度范围为5×10~(-8)~5×10~(-7)mol/L的5-甲氧基-2-甲基吲哚-3-乙酸的乙醇液,其中每份都含有吲哚美辛5×10~(-5)mol/L,作为标准溶液。 相似文献
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《中国药房》2019,(3):318-322
目的:设计、合成N-芳酰基取代的二氢吲哚-3-乙酸类衍生物,并评价其体外降糖活性。方法:以吲哚衍生物2-[5-(苄氧基)-1-(4-氯苯甲酰基)-2-甲基-1H-吲哚-3-基]乙酸(GY3)为先导化合物,以4-苯甲氧基苯肼盐酸盐及4-氧戊酸甲酯为原料,经Fischer吲哚环合、还原、酰胺化及水解等4步反应得到8种N-芳酰基(3-羟基苯甲酰基、3-氰基苯甲酰基、4-硝基苯甲酰基、4-甲磺酰基苯甲酰基、4-乙酰胺基苯甲酰基、3-乙酰氨基苯甲酰基、异烟酰基、吡啶-2-甲酰基)取代的二氢吲哚-3-乙酸类衍生物。采用人肝癌细胞HepG2测试目标化合物的体外促葡萄糖消耗活性。结果:共合成8个N-芳酰基取代的二氢吲哚-3-乙酸类目标化合物,其结构均经质谱、核磁共振氢谱及碳谱确证。在1.0μmol/L条件下,所合成化合物在HepG2细胞上的促葡萄糖消耗百分率为5.4%~9.1%,其中,2-[(2R,3S)-5-苄氧基-2-甲基-1-(4-甲磺酰基苯甲酰基)-2,3-二氢-吲哚-3-基]乙酸的降糖活性最好,其促葡萄糖消耗百分率为(9.10±1.81)%,与阳性对照药物二甲双胍接近[(10.58±1.68)%],但仍弱于先导化合物GY3[(12.15±0.78)%]。结论:二氢吲哚类化合物的N-芳酰基芳环上引入不同吸电子取代基团,如氰基、硝基、甲磺酰基等,其降糖活性不同程度下降,且弱于卤素取代基的GY3。 相似文献
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2,3-二(1H-吲哚-3-基)-N-甲基马来酰亚胺在三氟乙酸作用下形成吲哚啉中间体,与不经保护的葡萄糖发生糖基化反应,氧化后得到1,11-脱氯-6-甲基-4'-去甲基蝴蝶霉素,总收率约为69%。 相似文献
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1-(5-取代糠基)吲哚啉-2-酮衍生物的合成和初步抗肿瘤活性 总被引:1,自引:0,他引:1
为了寻找具有较好抗肿瘤活性的新型吲哚啉-2-酮类化合物,本研究以5-甲酰基-2,4-二甲基-1H-吡咯-3-羧酸乙酯与5位不同取代的吲哚啉-2-酮(2a~2d)为原料,首先经缩合得3-吡咯亚甲基-吲哚啉-2-酮(3a~3d),再经N烃化反应得到1-(5-甲酰基糠基)-3-(吡咯亚甲基)-吲哚啉-2-酮(4a~4d),然后与吲哚啉-2-酮缩合得到以5-亚甲基糠基连接的双吲哚啉-2-酮化合物(5a~5d)。所合成的12个新型吲哚啉-2-酮类化合物的结构经核磁共振谱、质谱和元素分析确认。采用四氮唑盐(MTT)还原法测试所合成化合物的体外抗肿瘤活性,结果表明所合成的化合物均有一定的抗肿瘤作用,其中6个化合物对SPC-A1肺癌肿瘤株体外抑制活性优于舒尼替尼,特别是化合物5a~5d, IC50值均小于5 μmol·L-1,值得作为抗肿瘤药物先导化合物。 相似文献
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目的 采用HPLC测定不同环境下大鼠粪便中吲哚和3-甲基吲哚。方法 采用HPLC-FLD技术,以Hypersil GOLD C8色谱柱(4.6 mm×250 mm,5 μm),乙腈和水为流动相,梯度洗脱,同时测定普通环境、SPF繁殖区及SPF实验区大鼠新鲜粪便中吲哚与3-甲基吲哚含量,对比分析不同环境的大鼠粪便中吲哚和3-甲基吲哚含量差异。结果 建立了同时测定大鼠粪便中吲哚与3-甲基吲哚含量的理想检测条件;不同环境下大鼠粪便中吲哚与3-甲基吲哚含量差异极大,与普通环境饲养的大鼠相比(吲哚为2.65 μg·g-1),SPF实验区和SPF繁殖区大鼠粪便中吲哚含量分别为26.09,6.25 μg·g-1,差异具有统计学意义(P<0.01);与普通环境饲养的大鼠相比(3-甲基吲哚为1.82 μg·g-1),SPF实验区和SPF繁殖区大鼠粪便中3-甲基吲哚含量分别为0.43,0 μg·g-1,差异具有统计学意义(P<0.01)。结论 该方法重现性好、特异性强,可用于大鼠粪便中吲哚与3-甲基吲哚的含量测定分析。 相似文献
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目的寻找脂肪酸缩合酶Ⅲ(FabH)抑制剂1-(6-氯-3,4-亚甲-二氧基苄基)-2羧基-5-(2,6-二氯苄氧基)吲哚的新合成路线。方法以对乙酰氨基苯酚为起始原料,制备4-(2,6-二氯苄氧基)苯胺,用经典的Fischer吲哚合成法制备吲哚片断,随后引入6-氯-3,4-亚甲二氧基苄基,最后酯水解得到目标化合物。结果与结论目标化合物经1H-NMR1、3C-NMR和MS确证,中间体经1H-NMR确证。该路线成本低,操作简单可行,总收率14.2%,可顺利得到目标化合物。 相似文献
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Reactions of 5-ethyl 5H-1,2,4-triazino|5,6-b|indol-3-thione ( 1 ) with various reagents have been studied. 1 and hydrazine hydrate in anhydrous ethanol gave 5-ethyl-3-hydrazino-5H-1,2,4-triazino|5,6-b|indole ( 2 ). This compound was condensed with formic acid and acetic acid to give 10-ethyl-10H-|1,2,4|triazolo|3′,4′:3,4||1,2,4|triazino|5,6-b|indole ( 4 , R=H) and 10-ethyl-1 -methyl-10H-|1,2,4|triazolo-|3′,4′:3,4‖ 1,2,4|triazino|5,6-b|indole ( 4 , R = CH3), respectively. Treatment of 2 with nitrous acid gave 10-ethyl-10H-tetrazolo|5′,1′:3,4‖ 1,2,4|triazino|5,6-b|indole ( 7 ). Interaction of 2 with acetylacetone in alcoholic KOH gave the pyrazole 8 , whereas reaction of 2 with ethyl acetoacetate in anhydrous ethanol led to the expected hydrazone 9 , which on reflux with alcoholic KOH gives 1-(5-ethyl-5H-1,2,4-triazino| 5,6-b|indol-3-yl)-3-methyl-2-pyrazolin-5-one 10 . Treatment of 2 with ethyl chloroformate gives 11 , which can be converted to 10-ethyl-2,10-dihydro-1H-|1,2,4|triazolo|3′,4′:3,4|triazino|5,6-b|-indol-1-one 12 by fusion. 相似文献
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The reaction of 3-(1-propanoyloxybenzyl)-2H-1-benzopyran-2-one (2) with the nitriles of 4-dimethylaminobenzoic, 4-diethylaminobenzoic, nicotinic, isonicotinic, and 3-dimethylaminopropionic acid in conc. H2SO4 yields the amides 3a-e. 3a-d were converted into hydrochlorides. 相似文献
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The Aliphatic Acid Amide Grouping as Partial Structure in Virustatics By conversion of substituted aliphatic carboxylic acids ( 1a, b, c ) into the corresponding carboxylic acid chlorides ( 2a, b, c ) followed by the interaction with 1-aminoadamantane ( 3 ), 4-phenoxy-aniline ( 5a ), 4-aminoantipyrine ( 5b ) or ammonia ( 5c ), the particular acid amides ( 4a, 4b, 4c, 6a, 6b, 6c ) are formed. 1-Adamantylacetamide ( 6c ) is converted into 1-adamantylacetonitrile by the action of P2O5. 相似文献
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Mansour I. Younes Abdel-Alim M. Abdel-Alim Hessan H. Abbas Saoud A. Metwally 《Archiv der Pharmazie》1987,320(12):1196-1202
5-Ethyl-3-hydrazino-5H-1,2,4-triazino|5,6-b|indole ( 2 ) reacts with aromatic aldehydes in anhydrous ethanol to yield substituted arylidene-(5-ethyl-5H-1,2,4-triazino|5,6-b|indol-3-yl)hydrazones 3 . Treatment of 3 with excess SOCl2 gave 10-ethyl-1-aryl-10H-| 1,2,4]triazolo|3′,4′:3,4| 1,2,4|triazino|5,6-b|indoles 4 , while the reaction of 2 with CS2 in methanolic KOH afforded 10-ethyl-2,10-dihydro-1 H-| 1,2,4|triazolo|3′,4′3,4‖ 1,2,4|triazino|5,6-b|indol-1-thione ( 5 ). Fusion of 1 with aromatic amines leads to 3-(arylamino)-5-ethyl-5H-1,2,4-triazino|5,6-b|indoles 6 , whereas the reaction of 1 with alkyl or aralkyl halides in anhydrous acetone and in the presence of anhydrous K2CO3 results in the alkylation of the thiol group to give the alkylthio or aralkylthio derivatives 7. 相似文献
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Conrad Kunick 《Archiv der Pharmazie》1992,325(5):297-299
Synthesis of 7,12-Dihydro-indolo[3,2-d][1]benzazepin-6-(5H)-ones and 6,11-Dihydro-thieno-[3′,2′:2,3]azepino[4,5-b]indol-5(4H)-one The title compounds 4 and 6 were prepared by Fischer indole synthesis. 4a is substituted in 10-position by reaction with bromine in glacial acetic acid. A fast ring inversion is observed for the azepine ring in 4 and 6 . 相似文献
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Herbert Oelschlger Jiri Volke Michael Berthold Vetter Wolfgang Schmidt 《Archiv der Pharmazie》1991,324(7):417-421
Mechanism of the Electrochemical Reduction of Loprazolam (1) [6-(2-Chlorophenyl)-2-(4-methyl-1-piperazinylmethylene)-8-nitro-2H-imidazol[1,2a][1,4]benzodiazepin-1H(4H)-one] at a Dropping Mercury Electrode Loprazolam ( 1 ) is reduced in three waves (DCT) in add buffers (pH 2.8). The first wave (A) corresponds to the reduction of its NO2-group to the corresponding hydroxylamine (4 Θ), the second step (B) to the reduction of the °C?N—- double bond (5,6) (2 Θ) and the wave C at the most negative potential has to be ascribed to the reduction of the butazadiene grouping (4 Θ). Only in strongly acid buffers (pH < 2.8) the protonated hydroxylamino group is reduced to R-NH2; consequently an overall 12 Θ consumption has been observed here for the sum of all three waves. 相似文献
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本文报道2,4-二哌啶(或吡咯啶)基-6-取代氨基喹唑啉衍生物的合成及其抗疟作用。该类化合物经伯氏鼠疟原虫(Plasmodium berghei)抑制性治疗和约氏鼠疟原虫(P.yoelii)病因性预防筛选,发现有16个化合物对感染约氏鼠疟原虫的小鼠有病因性预防作用,其中以Ⅵ11,Ⅷ1,Ⅸ2及Ⅸ4四个化合物效果最好,每天口服2.5 mg/kg,连续三天,可使小鼠得到完全保护。此类化合物的合成,是以2,4-二氯-6-硝基喹唑啉与哌啶或吡咯啶缩合,经还原得2,4-二哌啶(或吡咯啶)基-6-氨基喹唑啉,然后与相应的取代苯甲醛缩合成席夫氏碱,再经还原和亚硝化而制得。 相似文献