Process for preparation of penicillin and cephalosporin imino halides
申请人:Eli Lilly and Company
公开号:US04211702A1
公开(公告)日:1980-07-08
Penicillin and cephalosporin imino halides are prepared by reacting of 6-acylaminopenicillins or 7-acylamino cephalosporins with a novel chlorinating compound derived from a triaryl phosphite and chlorine or bromine. The imino halide products are intermediates in the preparation of antibiotic compounds.
Processes for preparation of beta-lactam compounds
申请人:ELI LILLY AND COMPANY
公开号:EP0014567A1
公开(公告)日:1980-08-20
Kinetically controlled triaryl phosphite halogen compounds of the formula
wherein X is Cl or Br, and Z is hydrogen, halo, C1-C4 alkyl or C1-C4 alkoxy, are used to effect
a) halogenation of a C-6 or C-7 acylamine penicillin or cephalosporin,
b) halogenation of a 3-hydroxy-3-cephem,
c) one step halogenation of a C-7 acylamine-3-hydroxy- cephem
d) reduction of a cephalosporin sulfoxide
e) one step reduction/halogenation of a 3-hydroxy cephalosporin sulfoxide
f) one step reduction/halogenation of a C-7 acylamine cephalosporin sulfoxide
g) one step reduction/halogenation of a C-7 acylamino-3-hydroxy cephalosporin sulfoxide.
动力学控制的三芳基亚磷酸酯卤素化合物的化学式为
其中 X 是 Cl 或 Br,Z 是氢、卤素、C1-C4 烷基或 C1-C4 烷氧基,用于实现
a) C-6 或 C-7 氨基酰青霉素或头孢菌素的卤化、
b) 卤化 3-羟基-3-头孢菌素、
c) C-7 乙酰氨基-3-羟基-头孢的一步卤化反应
d) 还原头孢菌素亚砜
e) 一步还原/卤化 3-羟基头孢菌素亚砜
f) C-7 乙酰氨基头孢菌素亚砜的一步还原/卤化反应
g) C-7 乙酰氨基-3-羟基头孢菌素亚砜的一步还原/卤化反应。
Preparation of penicillin and cephalosporin compounds and novel intermediates useful therein
申请人:Lilly Industries Limited
公开号:EP0096496A1
公开(公告)日:1983-12-21
There is described a process for preparing a sulphoxide of the formula
in which R1, R2, R3 and R4, taken individually, are alkyl, alkoxy or aryl groups, X is an alkylene group, R5 is a carboxylic acid protecting group and Y is a linking group through one or two carbon atoms forming a penam or cephem nucleus, which comprises reacting a compound of formula
with an oxidising agent. a-Sulphoxide compounds of formula (I) are also provided as novel intermediates.