| abstract |
Compounds of formula I and their pharmaceutically acceptable salts and solvates, wherein X is —O—, —NH—, —S—, —NHC (═O) — or —NHC (═S) — R1 represents —H or a hydrocarbon chain; R2 represents —H, alkoxy, amino, a hydrocarbon chain or a ring radical; R3 represents —H, a hydrocarbon chain or a ring radical; R4 represents —H or R3 and R4 together form a ring; R5 and R6 represent -H or halogen; R7 represents -H, hydrocarbon chain or heteroaryl) are bacteria in animals including humans Useful for infection. |