The invention relates to antibacterial compounds of formula I
wherein n is 0 or 1; R
1
represents H or F; U represents CH
2
or, provided n is 1, O or NH; “-----” is a bond or is absent; V represents CH or N when “-----” is a bond, or CH
2
or NH when “-----” is absent; W represents CH or N; A represents —(CH—)
p
—NH—(CH
2
)
q
— wherein p is 1 and q is 1 or 2 or, provided U represents CH
2
and n is 1, p may also be 0 and q is then 2; G represents one of the groups
wherein Z represents N or CH and Q represents O or S; and Z
0
, Z
1
and Z
2
each represent CH, or Z
0
and Z
1
each represent CH and Z
2
represents N, or Z
0
represents CH, Z
1
represents N and Z
2
represents CH or N, or Z
0
represents N and Z
1
and Z
2
each represent CH;
and to salts of such compounds.