申请人:Kusano Hiroki
公开号:US20130096299A1
公开(公告)日:2013-04-18
Provided is a cephem compound which has a wide antimicrobial spectrum, and in particular exhibit potent antimicrobial activity against beta-lactamase producing Gram negative bacteria, and pharmaceutical composition comprising the same.
A Compound of the formula (I):
wherein
W and U are as defined in the specification;
R
1
is as defined in the specification;
R
2A
and R
2B
are as defined in the specification, provided that R
2A
and R
2B
are not taken together to form an optionally substituted oxime group when R
1
is aminothiazole or aminothiadiazole optionally protected at the amino group;
ring A is a benzene ring or a 6-membered aromatic heterocyclic group having 1-3 nitrogen atoms;
R
3
is a hydrogen atom, —OCH
3
or —NH—CH(═O);
k is an integer from 0 to 2;
R
4
is as defined in the specification; and
D and E are as defined in accordance with a) or b) described in the specification.
提供一种头孢菌素化合物,具有广泛的抗菌谱,特别对产β-内酰胺酶的革兰氏阴性细菌表现出强效的抗菌活性,以及包含该化合物的药物组合物。
化合物的结构式(I)如下:
其中
W和U如规范中定义;
R1如规范中定义;
R2A和R2B如规范中定义,但要求当R1为氨基噻唑或氨基噻二唑,在氨基团上选择性保护时,R2A和R2B不能一起形成可选择取代的肟基团;
环A是苯环或具有1-3个氮原子的6元芳香杂环基团;
R3是氢原子,—OCH3或—NH—CH(═O);
k是从0到2的整数;
R4如规范中定义;以及
D和E根据规范中描述的a)或b)中的定义。