Isopenicillins, processes for their preparation, and compositions containing them
申请人:SMITHKLINE BECKMAN CORPORATION
公开号:EP0000645A1
公开(公告)日:1979-02-07
Isopenicillins of the formula
in which
R is acylamino, azido, or amino; and
M is hydrogen a pharmaceutically acceptable cation, or a removable carboxylic acid protecting ester, can be prepared by ring-closing an appropriately 3-substituted-4- halomethyl β-lactam of the formula
in which
R' is acylamino or azido;
and when a compound (1) is required, in which R is amino, a protecting acyl group of an acylamino group R' is removed. Compound I show antibacterial activity against gram positive and gram negative organisms.
异青霉素
其中
R 是酰氨基、叠氮或氨基;和
M 为氢或药学上可接受的阳离子或可去除的羧酸保护酯,可通过环合适当的 3-取代-4-卤甲基 β-内酰胺制备,其式为
其中
R'是酰氨基或叠氮;
当需要R为氨基的化合物(1)时,去除酰氨基R'的保护酰基。化合物 I 对革兰氏阳性和革兰氏阴性菌具有抗菌活性。