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    • 24. 发明授权
    • Method of preparation of physostigmine carbamate derivatives from
eseretholes
    • 从eseretholes制备毒扁豆碱氨基甲酸酯衍生物的方法
    • US5734062A
    • 1998-03-31
    • US858987
    • 1997-05-20
    • Thomas B. K. LeeZhongli Gao
    • Thomas B. K. LeeZhongli Gao
    • C07D487/04C07D471/02
    • C07D487/04
    • This invention relates to a process for the preparation of a product of the formula ##STR1## wherein R is loweralkyl; R.sub.1 is hydrogen, loweralkyl, lowercycloalkyl, lowercycloalkylloweralkyl, lowerbicycloalkyl, aryl or arylloweralkyl; Rs is loweralkyl, lowercycloalkyl, lowercycloalkylloweralkyl, lowerbicycloalkyl, aryl or arylloweralkyl; or R.sub.1 and R.sub.2 taken together with the nitrogen atom to which they are attached form a group of the formula (Ia) ##STR2## wherein Y is hydrogen or loweralkyl and Z is hydrogen, loweralkyl, halogen, loweralkoxy or hydroxy; X is loweralkyl, loweralkoxy, halogen or trifluoromethyl; and m is 0, 1 or 2; or a pharmaceutically acceptable salt thereof; which process comprises(a) contacting a compound of formula (II) as defined herein with fortified hydrogen bromide to afford a compound of formula (III) as defined herein; contacting the reaction mixture containing a compound of formula (III) with either (1) an isocyanate of formula R.sub.1 NCO or (2) with a compound of formula (IV) as defined to afford a compound of formula (V) as defined herein and contacting the reaction mixture containing the compound of formula (V) with an amine of the formula R.sub.1 R.sub.2 NH herein in the presence of a carboxylic acid of the formula R.sub.5 COOH and forming and isolating the product of Formula (I).
    • 本发明涉及一种制备式(I)的产物的方法,其中R是低级烷基; R 1是氢,低级烷基,低级环烷基,低级环烷基低级烷基,低级双环烷基,芳基或芳基低级烷基; 低级烷基,低级环烷基,低级环烷基低级烷基,低级二环烷基,芳基或芳基低级烷基; 或者R 1和R 2与它们所连接的氮原子一起形成式(Ia)的基团,其中Y是氢或低级烷基,Z是氢,低级烷基,卤素,低级烷氧基或羟基; X是低级烷基,低级烷氧基,卤素或三氟甲基; m为0,1或2; 或其药学上可接受的盐; 该方法包括(a)使本文定义的式(II)化合物与强化溴化氢接触,得到本文定义的式(III)化合物; 使含有式(III)化合物的反应混合物与(1)式R1NCO或(2)的异氰酸酯与式(IV)化合物的定义相接触,得到如本文所定义的式(V)化合物和接触 本文在式R 5 COOH的羧酸存在下将含有式(Ⅴ)化合物的反应混合物与式R 1 R 2 NH的胺反应,并形成并分离式(I)的产物。
    • 27. 发明授权
    • Method of preparation of physostigmine carbamate derivatives from
eseretholes
    • 从eseretholes制备毒扁豆碱氨基甲酸酯衍生物的方法
    • US5665880A
    • 1997-09-09
    • US739402
    • 1996-10-31
    • Thomas B. K. LeeZhongli Gao
    • Thomas B. K. LeeZhongli Gao
    • C07D487/04C07D471/02
    • C07D487/04
    • This invention relates to a process for the preparation of a product of the formula ##STR1## wherein R is loweralkyl; R.sub.1, is hydrogen, loweralkyl, lowercycloalkyl, lowercycloalkylloweralkyl, lowerbicycloalkyl, aryl or arylloweralyl; R.sub.2 is lower alkyl, lowercycloalkyl, lowercycloalkylloweralkyl, lowerbicycloalkyl, aryl or arylloweralkyl; or R.sub.1 and R.sub.2 taken together with the nitrogen atom to which they are attached form a group of the formula (Ia) ##STR2## wherein Y is hydrogen or loweralkyl and Z is hydrogen, loweralkyl, halogen, loweralkoxy or hydroxy; X is loweralkyl, loweralkoxy, halogen or trifluoromethyl; and m is 0, 1 or 2; or a pharmaceutically acceptable salt thereof; which process comprises(a) contacting a compound of formula (II) as defined herein with fortified hydrogen bromide to afford a compound of formula (III) as defined herein; contacting the reaction mixture containing a compound of formula (III) with either (1) an isocyanate of formula R.sub.1 NCO or (2) with a compound of formula (IV) as defined to afford a compound of formula (V) as defined herein and contacting the reaction mixture containing the compound of formula (V) with an amine of the formula R.sub.1 R.sub.2 NH herein in the presence of a carboxylic acid of the formula R.sub.5 COOH and forming and isolating the product of Formula (I).
    • 本发明涉及一种制备式(I)的产物的方法,其中R是低级烷基; R1,是氢,低级烷基,低级环烷基,低级环烷基低级烷基,低级双环烷基,芳基或芳基甲酰基; R2是低级烷基,低级环烷基,低级环烷基低级烷基,低级二环烷基,芳基或芳基低级烷基; 或者R 1和R 2与它们所连接的氮原子一起形成式(Ia)的基团,其中Y是氢或低级烷基,Z是氢,低级烷基,卤素,低级烷氧基或羟基; X是低级烷基,低级烷氧基,卤素或三氟甲基; m为0,1或2; 或其药学上可接受的盐; 该方法包括(a)使本文定义的式(II)化合物与强化溴化氢接触,得到本文定义的式(III)化合物; 使含有式(III)化合物的反应混合物与(1)式R1NCO或(2)的异氰酸酯与式(IV)化合物的定义相接触,得到如本文所定义的式(V)化合物和接触 本文在式R 5 COOH的羧酸存在下将含有式(Ⅴ)化合物的反应混合物与式R 1 R 2 NH的胺反应,并形成并分离式(I)的产物。