Provided are compounds, the use of the said compounds in treatment, for example treatment of microbial infections, particularly by Gram negative bacteria. The compounds are polymyxin-based and are represented by the formula (I):
and pharmaceutically acceptable salts thereof, where X is —NHC(O)—, —C(O)—, —OC(O)—, —CH
2
— or —SO
2
—; R
5
represents C
0-12
alkyl(C
4-6
heterocyclyl), or C
2-12
alkyl or C
0-12
alkyl(C
3-8
cycloalkyl). and the alkyl or cycloalkyl bears one, two or three hydroxyl groups, or a —NR
6
R
7
group, or one —NR
6
R
7
group and one or two hydroxyl groups; and R
1
to R
4
and R
6
to R
8
are as defined in the description.
提供了一些化合物,这些化合物可用于治疗微
生物感染,特别是革兰氏阴性菌感染。这些化合物是基于
多粘菌素的,并由公式(I)表示:及其药学上可接受的盐,其中X为—NHC(O)—、—C(O)—、—OC(O)—、—
CH2—或—SO2—;R5代表C0-12烷基(C4-6杂环基)、C2-12烷基或C0-12烷基(C3-8环烷基),且烷基或环烷基上带有一个、两个或三个羟基,或一个—NR6R7基团,或一个—NR6R7基团和一个或两个羟基;R1到R4和R6到R8如描述中所定义。