摘要:
The invention relates to a new economical and simple process, using a new intermediate compound, for the production of 3'-substituted 7-amino-3-propenyl-4-cephem-carboxylic acid derivatives of formula
wherein R is hydrogen, a negative charge or a silyl protecting group, R o is hydrogen or methoxy, R₁ is hydrogen or a silyl protecting group and X is the radical of a nucleophile, and their acid addition salts.
摘要:
Intermediates in the production of cephalosporins of formula wherein either
α) R a denote hydrogen or a silyl group; R b denotes a group of formula -OR e , wherein R e denotes hydrogen or alkyl; and R c and R d together denote a bond; or β) R d and R a denote hydrogen or a silyl group; and R b and R c together denote an imino group of formula = N - Y, wherein Y denotes alkyl, aryl or heterocyclyl; or γ) R d denotes hydrogen or a silyl group; R a denotes hydrogen, if R d denotes hydrogen; or, R a denotes hydrogen or a silyl group, if R d denotes a silyl group; and R b and R c together denote the oxo group; in free form or in salt form.
摘要翻译:制备式的头孢菌素的中间体,其中任何α)R a表示氢或甲硅烷基; R b表示式-OR e的基团,其中R e表示氢或烷基; R c和R d一起表示键; 或β)R d和R a表示氢或甲硅烷基; 并且R b和R c一起表示式= N-Y的亚氨基,其中Y表示烷基,芳基或杂环基; 或γ)R d表示氢或甲硅烷基; R a表示氢,如果R d表示氢; 或者R a表示氢或甲硅烷基,如果R d表示甲硅烷基; 并且R b和R c一起表示氧代基; 以自由形式或盐形式
摘要:
A compound of formula wherein W, V, R 1 , R 5 R 2 , R 3 and R 4 have various meanings, a process for their production and their use as a pharmaceutical.
摘要:
The invention relates to a new economical and simple process, using a new intermediate compound, for the production of 3'-substituted 7-amino-3-propenyl-4-cephem-carboxylic acid derivatives of formula
wherein R is hydrogen, a negative charge or a silyl protecting group, R o is hydrogen or methoxy, R₁ is hydrogen or a silyl protecting group and X is the radical of a nucleophile, and their acid addition salts.