A compound of the formula:
wherein, W is —CH2
−
etc.; U is —S
−
etc.;
R
1
is substituted or unsubstituted carbocyclyl etc.;
R
2A
and R
2B
is a) or b) described in the specification;
R
3
is a hydrogen atom etc.; R
11
is carboxylate anion (—COO
−
) etc.;
L is substituted or unsubstituted lower alkylene etc.,
E is a substituted or unsubstituted divalent group containing quaternary ammonium ion;
G is a single bond etc.;
D is —C(═O)—C(═O)—NR
6
— etc.;
R
10
1) to 3) described in specification;
or an amino-protected compound when the amino group is present on the ring in the 7-side chain, or a pharmaceutically acceptable salt thereof.
公式为:其中,W为—
CH2−等;U为—S−等;R1为取代或未取代的
碳环等;R2A和R2B为规范中描述的a)或b);R3为
氢原子等;R11为
羧酸根离子(—COO−)等;L为取代或未取代的较低烷基等;E为含季
铵离子的取代或未取代的双价基团;G为单键等;D为—C(═O)—C(═O)—NR6—等;R10为规范中描述的1)至3);或者是7-侧链环上存在
氨基时的
氨基保护化合物,或其药用可接受盐。