(1'R,3S,4R)4-acylthio azetidinones
    1.
    发明公开
    (1'R,3S,4R)4-acylthio azetidinones 失效
    (1'R,3S,4R)4-酰硫基氮杂环丁酮

    公开(公告)号:EP0574784A1

    公开(公告)日:1993-12-22

    申请号:EP93109103.7

    申请日:1993-06-07

    申请人: PHARMACIA S.p.A.

    摘要: There is provided a process for preparing a compound of formula (I)

    wherein R is H or a hydroxy protecting group, R₂ is an organic residue and R₃ is H or a nitrogen protecting group, which process comprises reacting together a compound of formula (II)

    wherein R₁ is a C₁-C₄ alkyl or a phenyl group, R and R₃ are as defined above, a compound of formula (III)

    wherein R₂ is as defined above
    and X is a cation or a silicon-containing residue, and a salt of a group IIa, IIb or transition element. The compounds of formula (I) are intermediates in the synthesis of penem antibiotics.

    摘要翻译: 本发明提供了一种制备式(Ⅰ)化合物的方法,其中R是H或羟基保护基,R 2是有机残基,R 3是H或氮保护基,该方法包括使式(Ⅱ) )其中R 1是C 1 -C 4烷基或苯基,R和R 3如上定义,式(Ⅲ)化合物(其中R 2如上定义,X​​是阳离子或含硅残基)和盐 的IIa,IIb族或过渡元素。 式(I)化合物是合成青霉烯类抗生素的中间体。

    Process for the preparation of substituted benzofuran derivatives
    2.
    发明公开
    Process for the preparation of substituted benzofuran derivatives 失效
    维尔法赫尔(Zur Herstellung)取代物Benzofuranderivate。

    公开(公告)号:EP0496064A1

    公开(公告)日:1992-07-29

    申请号:EP91121073.0

    申请日:1991-12-09

    申请人: PHARMACIA S.p.A.

    摘要: The present invention relates to a process for the preparation of a compound of the following formula (I)

    wherein
    one of R₁ and R₂ is hydrogen or halogen and the other is independently, an amino group or a C₂-C₄ alkanoyl amino group;
    R₃ is hydrogen; a linear or branched alkyl, C₁-C₄ alkoxy or C₂-C₄ alkoxycarbonyl group; halogen; or phenyl unsubstituted or substituted by a C₁-C₄ alkyl group;
    A is a group -(CH₂) n -Het wherein Het is an optionally substituted heteromonocyclic or heterobicyclic ring containing one or two nitrogen atoms and n is zero or an integer of 1 to 3; and the symbol .... ¯ represents a single or double bond and the pharmaceutically acceptable salts thereof.
    The compounds of the invention can be useful as 5HT3 receptor antagonists.

    摘要翻译: 本发明涉及一种制备下式(I)化合物的方法,其中R 1和R 2之一为氢或卤素,另一个独立地为氨基或C 2 -C 4烷酰基氨基 ; R3是氢; 直链或支链烷基,C1-C4烷氧基或C2-C4烷氧基羰基; 卤素; 或未被取代或被C 1 -C 4烷基取代的苯基; A是基团 - (CH 2)n -Het,其中Het是含有一个或两个氮原子且n为0或1至3的整数的任选取代的杂单环或杂双环; 符号......表示单键或双键及其药学上可接受的盐。 本发明的化合物可用作5HT 3受体拮抗剂。

    Process for the synthesis of exomethylenecephams
    6.
    发明公开
    Process for the synthesis of exomethylenecephams 失效
    Verfahren zur Herstellung von Exomethylencephams。

    公开(公告)号:EP0556630A2

    公开(公告)日:1993-08-25

    申请号:EP93101588.7

    申请日:1993-02-02

    申请人: PHARMACIA S.p.A.

    CPC分类号: C07D501/00 Y02P20/55

    摘要: The present invention relates to a process for the preparation of exomethylene cephams, which are useful intermediates in the production of many useful β-lactam antibiotics.
    More particularly there is provided a process for preparing a compound of formula I

    wherein n is O or 1, R₁ is hydrogen atom or an organic residue and R₂ is a carboxy protecting group, which process comprises reacting a compound of the formula II

    wherein X is halogen atom or acetoxy group and R₁ n and R₂ are as defined above with a lanthanide complex.

    摘要翻译: 本发明涉及一种制备二亚甲基cephams的方法,其是生产许多有用的β-内酰胺抗生素的有用中间体。 更具体地,提供了制备式I化合物的方法,其中n是O或1,R 1是氢原子或有机残基,R 2是羧基保护基,该方法包括使式II化合物 其中X是卤素原子或乙酰氧基,R 1 n和R 2如上所定义与镧系元素络合物。