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    • 1. 发明申请
    • PROCESS FOR THE SYNTHESIS OF BENZYLIDENE ROSIGLITAZONE BASE
    • 苯并噻唑基合成方法
    • US20090270630A1
    • 2009-10-29
    • US12302127
    • 2007-06-21
    • Laszlo CzibulaFerenc SebokLaszlo DobayEva Werkne PappIda Deutschne JuhaszJudit Nagyne BagdyTamasne Uberhardt
    • Laszlo CzibulaFerenc SebokLaszlo DobayEva Werkne PappIda Deutschne JuhaszJudit Nagyne BagdyTamasne Uberhardt
    • C07D417/12
    • C07D417/12
    • Process for the synthesis of 5-{4-[N-methyl-N-(2-pyridyl)-amino-ethoxy]-benzylidene}-thiazolidine-2,4-dione (INN name: benzylidene-rosiglitazone) of formula (I), which consist of the following steps: Step a) reaction of 2-chloro-pyridine and 2-(N-methylamino)-ethanol Step b) reaction of the obtained compound of formula (III) with 4-fluorobenzaldehyde Step c) reaction of the obtained compound of formula (IV) with thiazolidine-2,4-dione characterized by dissolving 4-{2-[N-methyl-N-(2-pyridyl)amino]-ethanol of formula (III) obtained in Step a) in toluene and using it in Step b) without isolation; reacting the solution of compound of formula (III) in toluene in Step b) with 4-fluorobenzaldehyde in the presence of aqueous alkali hydroxide solution and phase transfer catalyst at 25-50° C.; reacting the solution of the benzaldehyde derivative of formula (IV) obtained in Step b) in toluene in Step c) and isolating the desired product.
    • 合成式(I)的5- {4- [N-甲基-N-(2-吡啶基) - 氨基 - 乙氧基] - 亚苄基} - 噻唑烷-2,4-二酮(INN名称:亚苄基 - 罗格列酮) ),其步骤如下:步骤a)2-氯 - 吡啶和2-(N-甲基氨基) - 乙醇的反应步骤b)将所得到的式(III)化合物与4-氟苯甲醛反应步骤c)反应 所得到的式(Ⅳ)化合物与噻唑烷-2,4-二酮的特征在于将步骤a中获得的式(Ⅳ)的4- {2- [N-甲基-N-(2-吡啶基)氨基] - 乙醇 )并在步骤b)中使用它而不分离; 使步骤b)中式(III)化合物在甲苯中的溶液与4-氟苯甲醛在碱金属氢氧化物水溶液和相转移催化剂存在下,在25-50℃下反应。 使步骤b)中获得的式(IV)的苯甲醛衍生物在步骤c)中的甲苯中的溶液反应,并分离所需产物。
    • 10. 发明申请
    • PIPERAZINE SALT AND A PROCESS FOR THE PREPARATION THEREOF
    • 哌嗪盐及其制备方法
    • US20110275816A1
    • 2011-11-10
    • US13140232
    • 2009-12-17
    • Laszlo CzibulaEva Againe CsongorKatalin NogradiBalint JuhaszFerenc SebokJanos GalambosIstvan Vago
    • Laszlo CzibulaEva Againe CsongorKatalin NogradiBalint JuhaszFerenc SebokJanos GalambosIstvan Vago
    • C07D241/04
    • C07D295/135
    • The invention relates to novel trans N-{4-{2-[4-(2, 3-dichlorophenyl)-piperazine-1-il]-ethyl}-cyclohexylamine dihydrochloride monohydrate and a process for the preparation of the trans N-{4-{2-[4-(2,3-dichlorophenyl)-piperazine-1-il]-ethyl}-cyclohexylamine dihydrochloride monohydrate, said process comprising the steps a) reacting trans 2-{1-[4-(N-tert-butoxycarbonyl) amino]-cyclohexyl}-acetic acid ester with sodium borohydride and aluminium trichloride to give trans 2-{1-[4-(N-tert-butoxycarbonyl)-amino]-cyclohexyl}-ethanol; b) reacting trans 2-{1-[4-(N-tert-butoxycarbonyl)-amino]cyclohexyl}-ethanol obtained with methanesulfonic acid chloride in the presence of an acid binding agent to give trans 2-{1-[4-(N-tert-butoxycarbonyl)-amino]-cyclohexyl}-ethyl methanesulfonate; c) reacting trans 2-{1-[4-(N-tert-butoxycarbonyl)-amino]-cyclohexyl}-ethyl methanesulfonate obtained with 2,3-dichlorophenyl-piperazine in the presence of an acid binding agent to give trans 2-{1-[4-(N-tert-butoxycarbonyl)-amino]-cyclohexyl}-carbamic acid tert-butylester; d) heating trans 2-{1-[4-(N-tert-butoxycarbonyl)-amino]-cyclohexyl}-carbamic acid tert-butylester obtained to a temperature between 40-100° C. in a mixture of aqueous hydrochloric acid/methanol to give trans N-{4-{2-[4-(2,3-dichlorophenyl) piperazine-1-il]-ethyl}-cyclohexylamine dihydrochloride monohydrate.
    • 本发明涉及新的反式N- {4- {2- [4-(2,3-二氯苯基) - 哌嗪-1-基] - 乙基} - 环己胺二盐酸盐一水合物及其制备方法, 4- {2- [4-(2,3-二氯苯基) - 哌嗪-1-基] - 乙基} - 环己胺二盐酸盐一水合物,所述方法包括步骤a)使反式2- {1- [4-(N- 叔丁氧羰基)氨基] - 环己基} - 乙酸酯与硼氢化钠和三氯化铝反应,得到反式2- {1- [4-(N-叔丁氧基羰基) - 氨基] - 环己基} - 乙醇; b)使得到的反式2- {1- [4-(N-叔丁氧基羰基) - 氨基]环己基} - 乙醇与甲磺酰氯在酸结合剂存在下反应,得到反式-2- {1- [4- (N-叔丁氧基羰基) - 氨基] - 环己基} - 乙基甲磺酸酯; c)在酸结合剂的存在下,使得到的与2,3-二氯苯基哌嗪的反式2- {1- [4-(N-叔丁氧基羰基) - 氨基] - 环己基} - 乙基甲基磺酸酯反应,得到反式-2- {1- [4-(N-叔丁氧基羰基) - 氨基] - 环己基} - 氨基甲酸叔丁酯; d)将得到的反式2- {1- [4-(N-叔丁氧基羰基) - 氨基] - 环己基} - 氨基甲酸叔丁基酯加热至40-100℃的温度,在盐酸/ 得到反式N- {4- {2- [4-(2,3-二氯苯基)哌嗪-1-基] - 乙基} - 环己胺二盐酸盐一水合物。