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    • 1. 发明授权
    • Substituted acetoxyazetidinone derivatives and process for preparing
4-acyloxyazetidinone derivatives
    • 取代的乙酰氧基氮杂环丁酮衍生物和制备4-酰氧基氮杂环丁酮衍生物的方法
    • US5606052A
    • 1997-02-25
    • US436812
    • 1995-05-08
    • Takao SaitoHidenori KumobayashiShunichi Murahashi
    • Takao SaitoHidenori KumobayashiShunichi Murahashi
    • B01J27/128B01J31/12B01J31/30C07B61/00C07D205/08C07F7/18
    • C07F7/186C07D205/08C07F7/1892
    • A process for preparing a 4-acyloxyazetidinone or a derivative thereof represented by formula (IV): ##STR1## wherein R.sup.1 represents a hydrogen atom, a lower alkyl group, a hydroxyethyl group, or a protected hydroxyethyl group; R.sup.3 represents an alkyl group having from 1 to 10 carbon atoms which may be substituted with a halogen atom, a cyano group, a lower alkoxy group or a phenyl group, or a substituted or unsubstituted phenyl group, provided that the .alpha.-positioned carbon atom of said alkyl group should not have more than two halogen atoms; and R.sup.4 represents a hydrogen atom, a lower alkyl group, or a lower alkoxycarbonyl group, which is useful as an intermediate for penem antibiotics is disclosed, comprising reacting azetidinone or a derivative thereof represented by formula (II): ##STR2## wherein R.sup.1 is as defined above, and R.sup.2 represents a hydrogen atom, a lower alkyl group, a lower alkoxycarbonyl group, or a carboxyl group, with a carboxylic acid represented by formula (III):R.sup.3 COOH (III)wherein R.sup.3 is as defined above, in the presence of (1) a transition metal compound selected from a ruthenium compound, an osmium compound, and a cobalt compound, (2) an aldehyde having 2 or more carbon atoms, provided that the carbon atom at the .alpha.-position thereof should not have two or more halogen atoms, and (3) oxygen. The compound (IV) can be prepared with safety through simple and easy operations.
    • 制备由式(Ⅳ)表示的4-酰氧基氮杂环丁酮或其衍生物的方法:原子,低级烷基,羟乙基或被保护的羟乙基; R3表示可以被卤素原子,氰基,低级烷氧基或苯基取代的具有1至10个碳原子的烷基或取代或未取代的苯基,条件是α-位置的碳原子 的所述烷基不应具有多于两个的卤素原子; 其中R 4表示可用作Penem抗生素中间体的氢原子,低级烷基或低级烷氧基羰基,包括使由式(II)表示的氮杂环丁酮或其衍生物: 其中R 1如上所定义,R 2表示氢原子,低级烷基,低级烷氧基羰基或羧基,与式(III)表示的羧酸:R3COOH(III)其中R3如上定义 在(1)选自钌化合物,锇化合物和钴化合物的过渡金属化合物的存在下,(2)具有2个或更多个碳原子的醛,条件是其α位上的碳原子 不应该有两个或更多的卤素原子,和(3)氧。 化合物(IV)可以通过简单和容易的操作安全地制备。
    • 2. 发明授权
    • Ru catalyzed acyloxylation process for preparing 4-acyloxyazetidinone
derivatives
    • Ru催化酰氧化方法制备4-酰氧基氮杂环丁酮衍生物
    • US5440030A
    • 1995-08-08
    • US167201
    • 1993-12-16
    • Takao SaitoHidenori KumobayashiShunichi Murahashi
    • Takao SaitoHidenori KumobayashiShunichi Murahashi
    • B01J27/128B01J31/12B01J31/30C07B61/00C07D205/08C07F7/18C07B41/12
    • C07F7/186C07D205/08C07F7/1892
    • A process for preparing a 4-acyloxyazetidinone or a derivative thereof represented by formula (IV): ##STR1## wherein R.sup.1 represents a hydrogen atom, a lower alkyl group, a hydroxyethyl group, or a protected hydroxyethyl group; R.sup.3 represents an alkyl group having from 1 to 10 carbon atoms which may be substituted with a halogen atom, a cyano group, a lower alkoxy group or a phenyl group, or a substituted or unsubstituted phenyl group, provided that the .alpha.-positioned carbon atom of said alkyl group should not have more than two halogen atoms; and R.sup.4 represents a hydrogen atom, a lower alkyl group, or a lower alkoxycarbonyl group,which is useful as an intermediate for penera antibiotics is disclosed, comprising reacting azetidinone or a derivative thereof represented by formula (II): ##STR2## wherein R.sup.1 is as defined above, and R.sup.2 represents a hydrogen atom, a lower alkyl group, a lower alkoxycarbonyl group, or a carboxyl group,with a carboxylic acid represented by formula (III):R.sup.3 COOH (III)wherein R.sup.3 is as defined above,in the presence of (1) a transition metal compound selected from a ruthenium compound, an osmium compound, and a cobalt compound, (2) an aldehyde having 2 or more carbon atoms, provided that the carbon atom at the .alpha.-position thereof should not have two or more halogen atoms, and (3) oxygen. The compound (IV) can be prepared with safety through simple and easy operations.
    • 制备由式(IV)表示的4-酰氧基氮杂环丁酮或其衍生物的方法:n原子,低级烷基,羟乙基或被保护的羟乙基; R3表示可以被卤素原子,氰基,低级烷氧基或苯基取代的具有1至10个碳原子的烷基或取代或未取代的苯基,条件是α-位置的碳原子 的所述烷基不应具有多于两个的卤素原子; 其中R 4表示氢原子,低级烷基或低级烷氧基羰基,其可用作倍他安抗生素的中间体,包括使由式(II)表示的氮杂环丁酮或其衍生物: 其中R 1如上所定义,R 2表示氢原子,低级烷基,低级烷氧基羰基或羧基,与式(III)表示的羧酸:R3COOH(III)其中R3如上定义 在(1)选自钌化合物,锇化合物和钴化合物的过渡金属化合物的存在下,(2)具有2个或更多个碳原子的醛,条件是其α位上的碳原子 不应该有两个或更多的卤素原子,和(3)氧。 化合物(IV)可以通过简单和容易的操作安全地制备。
    • 5. 发明授权
    • Substituted acetoxyazetidinone derivatives and process for preparing
4-acyloxyazetidinone derivatives
    • 取代的乙酰氧基氮杂环丁酮衍生物和制备4-酰氧基氮杂环丁酮衍生物的方法
    • US5629420A
    • 1997-05-13
    • US436810
    • 1995-05-08
    • Takao SaitoHidenori KumobayashiShunichi Murahashi
    • Takao SaitoHidenori KumobayashiShunichi Murahashi
    • B01J27/128B01J31/12B01J31/30C07B61/00C07D205/08C07F7/18C07B41/12
    • C07F7/186C07D205/08C07F7/1892
    • A process for preparing a 4-acyloxyazetidinone or a derivative thereof represented by formula (IV): ##STR1## wherein R.sup.1 represents a hydrogen atom, a lower alkyl group, a hydroxyethyl group, or a protected hydroxyethyl group; R.sup.3 represents an alkyl group having from 1 to 10 carbon atoms which may be substituted with a halogen atom, a cyano group, a lower alkoxy group or a phenyl group, or a substituted or unsubstituted phenyl group, provided that the .alpha.-positioned carbon atom of said alkyl group should not have more than two halogen atoms; and R.sup.4 represents a hydrogen atom, a lower alkyl group, or a lower alkoxycarbonyl group, which is useful as an intermediate for penem antibiotics is disclosed, comprising reacting azetidinone or a derivative thereof represented by formula (II): ##STR2## wherein R.sup.1 is as defined above, and R.sup.2 represents a hydrogen atom, a lower alkyl group, a lower alkoxycarbonyl group, or a carboxyl group, with a carboxylic acid represented by formula (III):R.sup.3 COOH (III)wherein R.sup.3 is as defined above, in the presence of (1) a transition metal compound selected from a ruthenium compound, an osmium compound, and a cobalt compound, (2) an aldehyde having 2 or more carbon atoms, provided that the carbon atom at the .alpha.-position thereof should not have two or more halogen atoms, and (3) oxygen. The compound (IV) can be prepared with safety through simple and easy operations.
    • 制备由式(Ⅳ)表示的4-酰氧基氮杂环丁酮或其衍生物的方法:原子,低级烷基,羟乙基或被保护的羟乙基; R3表示可以被卤素原子,氰基,低级烷氧基或苯基取代的具有1至10个碳原子的烷基或取代或未取代的苯基,条件是α-位置的碳原子 的所述烷基不应具有多于两个的卤素原子; 其中R 4表示可用作Penem抗生素中间体的氢原子,低级烷基或低级烷氧基羰基,包括使由式(II)表示的氮杂环丁酮或其衍生物: 其中R 1如上所定义,R 2表示氢原子,低级烷基,低级烷氧基羰基或羧基,与式(III)表示的羧酸:R3COOH(III)其中R3如上定义 在(1)选自钌化合物,锇化合物和钴化合物的过渡金属化合物的存在下,(2)具有2个或更多个碳原子的醛,条件是其α位上的碳原子 不应该有两个或更多的卤素原子,和(3)氧。 化合物(IV)可以通过简单和容易的操作安全地制备。
    • 6. 发明授权
    • Substituted acetoxyazetidinone derivatives and process for preparing
4-acyloxyazetidinone derivatives
    • 取代的乙酰氧基氮杂环丁酮衍生物和制备4-酰氧基氮杂环丁酮衍生物的方法
    • US5288862A
    • 1994-02-22
    • US869171
    • 1992-04-16
    • Takao SaitoHidenori KumobayashiShunichi Murahashi
    • Takao SaitoHidenori KumobayashiShunichi Murahashi
    • B01J27/128B01J31/12B01J31/30C07B61/00C07D205/08C07F7/18C07B41/12
    • C07F7/186C07D205/08C07F7/1892
    • A process for preparing a 4-acyloxyazetidinone or a derivative thereof represented by formula (IV): ##STR1## wherein R.sup.1 represents a hydrogen atom, a lower alkyl group, a hydroxyethyl group, or a protected hydroxyethyl group; R.sup.3 represents an alkyl group having from 1 to 10 carbon atoms which may be substituted with a halogen atom, a cyano group, a lower alkoxy group or a phenyl group, or a substituted or unsubstituted phenyl group, provided that the .alpha.-positioned carbon atom of said alkyl group should not have more than two halogen atoms; and R.sup.4 represents a hydrogen atom, a lower alkyl group, or a lower alkoxycarbonyl group, which is useful as an intermediate for penem antibiotics is disclosed, comprising reacting azetidinone or a derivative thereof represented by formula (II): ##STR2## wherein R.sup.1 is as defined above, and R.sup.2 represents a hydrogen atom, a lower alkyl group, a lower alkoxycarbonyl group, or a carboxyl group,with a carboxylic acid represented by formula (III):R.sup.3 COOH (III)wherein R.sup.3 is as defined above,in the presence of (1) a transition metal compound selected from a ruthenium compound, an osmium compound, and a cobalt compound, (2) an aldehyde having 2 or more carbon atoms, provided that the carbon atom at the .alpha.-position thereof should not have two or more halogen atoms, and (3) oxygen. The compound (IV) can be prepared with safety through simple and easy operations.
    • 制备由式(IV)表示的4-酰氧基氮杂环丁酮或其衍生物的方法:(*化学结构*)(Ⅳ)其中R1表示氢原子,低级烷基,羟乙基或被保护的羟乙基; R 3表示可以被卤素原子,氰基,低级烷氧基或苯基取代的具有1至10个碳原子的烷基或取代或未取代的苯基,条件是(α)位置 所述烷基的碳原子不应具有多于两个的卤素原子; 并且R4表示可用作penem抗生素中间体的氢原子,低级烷基或低级烷氧基羰基,包括使由式(II)表示的氮杂环丁酮或其衍生物:(*化学结构*) (II)其中R 1如上所定义,并且R 2表示氢原子,低级烷基,低级烷氧基羰基或羧基,与式(III)表示的羧酸:R3COOH(III)其中R3是 如上所述,在(1)选自钌化合物,锇化合物和钴化合物的过渡金属化合物的存在下,(2)具有2个或更多个碳原子的醛,条件是( α) - 其不应具有两个或更多个卤素原子,和(3)氧。 化合物(IV)可以通过简单和容易的操作安全地制备。
    • 9. 发明授权
    • Ruthenium catalyzed process for preparing 4-acetoxyazetidinones
    • 用于制备4-乙酰氧基氮杂环丁酮的钌催化方法
    • US5204460A
    • 1993-04-20
    • US774348
    • 1991-10-10
    • Takao SaitoHidenori Kumobayashi
    • Takao SaitoHidenori Kumobayashi
    • C07D205/08C07F7/18
    • C07F7/186C07D205/08
    • A simplified process for preparing 4-acetoxyazetidinones of formula (I): ##STR1## wherein Z is a hydrogen atom, a lower alkyl group or a hydroxyethyl group which may or may not be protected is disclosed. According to the invention, azetidinones of formula (II): ##STR2## wherein Z has the same meaning as defined above and Y is a hydrogen atom or a carboxyl group is reacted with acetic acid and an oxidizing agent in the presence of a ruthenium compound represented by the formula [Ru(B).sub.2 (L)].sub.m wherein B is Cl, Br or l, m is a positive integer, and L is 1,5-cyclooctadiene, norbornadiene, cycloheptatriene, cyclooctatetraene or benzene which may or may not have a lower alkyl group as a substituent, as a catalyst.
    • 公开了制备式(I)的4-乙酰氧基氮杂环丁酮的简化方法:其中Z是氢原子,低级烷基或可以不被保护的羟乙基。 根据本发明,式(II)的氮杂环丁酮:其中Z具有与上述相同的含义,Y是氢原子或羧基,在乙酸和氧化剂的存在下,与 由式[Ru(B)2(L)] m表示的钌化合物,其中B为Cl,Br或l,m为正整数,L为1,5-环辛二烯,降冰片二烯,环庚三烯,环辛四烯或苯 可以具有或不具有低级烷基作为取代基,作为催化剂。