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公开(公告)号:US4414328A
公开(公告)日:1983-11-08
申请号:US283962
申请日:1981-07-16
申请人: Hiroshi Imanaka , Toshio Miyoshi , Toshio Konomi , Yoshiaki Kubochi , Seiziro Hattori , Takeshi Kawakita
发明人: Hiroshi Imanaka , Toshio Miyoshi , Toshio Konomi , Yoshiaki Kubochi , Seiziro Hattori , Takeshi Kawakita
CPC分类号: C12P35/06 , C12N9/18 , Y10S435/911
摘要: Deacetylcephalosporin C is converted to cephalosporin C by contact with an acetylesterase produced by Aureobasidium pullanans strain 1F0 4466.
摘要翻译: 脱乙酰头孢菌素C通过与由Aureobasidium pullanans菌株1F04466产生的乙酰酯酶接触而转化为头孢菌素C.
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公开(公告)号:US4517299A
公开(公告)日:1985-05-14
申请号:US500883
申请日:1983-06-03
申请人: Hiroshi Imanaka , Toshio Miyoshi , Toshio Konomi , Yoshiaki Kubochi , Seiziro Hattori , Takeshi Kawakita
发明人: Hiroshi Imanaka , Toshio Miyoshi , Toshio Konomi , Yoshiaki Kubochi , Seiziro Hattori , Takeshi Kawakita
CPC分类号: C12P35/06 , C12N9/18 , Y10S435/911
摘要: New acetylesterases are prepared from Aureobasidium pullulans IFO 4466 which are capable of hydrolyzing cephalosporin C to deacetylcephalosporin C.
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公开(公告)号:US4307192A
公开(公告)日:1981-12-22
申请号:US223110
申请日:1981-01-07
申请人: Arnold L. Demain , Toshio Konomi , Jack E. Baldwin
发明人: Arnold L. Demain , Toshio Konomi , Jack E. Baldwin
CPC分类号: C12P35/06 , C12P37/00 , Y10S435/926
摘要: A cell-free process for converting isopenicillin N, .delta.-(L-.alpha.-aminoadipyl)-L-cysteinyl-D-valine (hereinafter "LLD") and 6-substituted derivatives thereof to deacetoxycephalosporin C (DACPC) by the following reaction sequence: ##STR1## is disclosed. In addition to the starting material, the reaction system includes ATP and a fresh extract of Cephalosporium acremonium prepared and used in a manner to preserve the racemase agent or agents necessary for conversion of the isopenicillin N to penicillin N, a necessary intermediate step in the process.
摘要翻译: 通过以下反应顺序将异青霉素N,δ-(L-α-氨基己二酰基)-L-半胱氨酰-D-缬氨酸(以下称为“LLD”)及其6-取代衍生物转化为脱乙酰氧基头孢菌素C(DACPC)的无细胞方法 :公开了
。 除了起始原料之外,反应体系还包括ATP和一种顶头孢霉的新鲜提取物,其制备和使用方法是保留将异青霉素N转化成青霉素N所必需的消旋酶试剂或试剂,该方法中必需的中间步骤 。 -
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公开(公告)号:US4248966A
公开(公告)日:1981-02-03
申请号:US40061
申请日:1979-05-17
申请人: Arnold L. Demain , Toshio Konomi , Jack E. Baldwin
发明人: Arnold L. Demain , Toshio Konomi , Jack E. Baldwin
IPC分类号: C07D499/06 , C07D499/48 , C12P37/00 , C12R1/75
CPC分类号: C12P37/00 , Y10S435/926
摘要: Isopenicillin derivatives having antimicrobial properties and a general formula of: ##STR1## where R, R.sub.1, and R.sub.2 are hydrogen, methyl, ethyl, propyl, isopropyl, or halogenated methyl, ethyl, propyl or isopropyl radicals and R.sub.3 is ##STR2## are produced in a cell-free system using an extract from Cephalosporium acremonium. The starting materials for the synthesis consist of tripeptides composed of unsubstituted or .beta.-substituted D-valine, unsubstituted or substituted L cysteine, and L- .alpha.-aminoadipic acid or its analogues. Certain enzymes in the cell-free extract are inactivated so that conversion does not proceed past the isopenicillin stage.
摘要翻译: 具有抗微生物性质和通式的异青霉素衍生物:其中R,R 1和R 2是氢,甲基,乙基,丙基,异丙基或卤代甲基,乙基,丙基或异丙基,R3是
> + TR 是使用顶头孢霉的提取物在无细胞系统中生产的。 用于合成的起始材料由由未取代或β-取代的D-缬氨酸,未取代或取代的L半胱氨酸和L-α-氨基己二酸或其类似物组成的三肽组成。 无细胞提取物中的某些酶被灭活,使得转化不通过异青霉素阶段进行。
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