PLEUROMUTILIN DERIVATIVES FOR THE TREATMENT OF DISEASES MEDIATED BY MICROBES

A compound of formula (I) wherein n is 0 to 4; m is 0 or 1 with the proviso that the sulphur atom and R 3 are in vicinal position (if m = 0 then R 3 is in position 2', and if m = 1 then R 3 is on position 1'); R is ethyl or vinyl; R 1 is hydrogen or (C 1-6 )alkyl, R 2 is hydrogen or - (C 3 - 6 )cycloalkyl, or - unsubstituted (C 1 - 6 )alkyl, or - (C 1 - 6 )alkyl substituted by one or more of - hydroxy; preferably one or two, - methoxy, - halogen, - (C 3 - 6 )cycloalkyl, or R 1 and R 2 together with the nitrogen atom to which they are attached form a 5 to 7 membered heterocyclic ring containing at least 1 nitrogen atom or 1 nitrogen and 1 additional heteroatome e. g. selected from N or O, or R 1 is hydroxy and R 2 is formyl; R 3 is OH, OR 4 , a halogen atom, or - with the proviso that R 3 is bound to 2' R 3 represents -O-(CH 2 ) p -O- with p is 2 or 3; R 4 is unsubstituted (C 1 - 6 )alkyl or (C 3 - 6 )cycloalkyl.