6-Amidinopenicillanic acid derivatives wherein one of the nitrogen atoms of the amidino group is part of a heterocyclic ring having on a side chain an unsubstituted heterocyclic ring containing 2 to 3 nitrogen atoms, and being useful as an antibiotic.
6-
氨基甲酰青霉烷酸衍
生物,其中
氨基基团的一个氮原子是杂环环中的一部分,在侧链上具有一个含有2至3个氮原子的未取代杂环环,可用作抗生素。