The invention relates to antibacterial compounds of formula Iwherein R1, M, R2, R3, and V are as described in the description, to their preparation, to salts thereof, and to their use as pharmaceuticals, to pharmaceutical compositions containing one or more compounds of formula I, and especially to their use as antibacterial agents.本發明係關於式I之抗菌化合物其中R1、M、R2、R3及V係如說明中所闡述,關於該等化合物之製備,關於其鹽,且關於其作為醫藥之用途,關於含有一或多種式I化合物之醫藥組合物,且尤其關於其作為抗菌劑之用途。無