A compound of the formula CH3(CH2)n&mdash；RA&mdash；(CH2)m-(CH&boxH；CH)q&mdash；(CH2)p&mdash；X wherein RA=(a)； q=0 or 1； m and p are independently selected integers of at least 1； n=0 or an integer of at least 1； X is a polar group selected from &mdash；CO2RS, where Rs&boxH；H, Na, K, &mdash；NHRI, &mdash；NRIRII or RIII； &mdash；CH3OH； &mdash；CH3NH2； &mdash；CH3NHRI； or &mdash；CH3NRIRII； wherein RI, RII and RIII are independently selected from C1-C6 alkyl or an aryl group, preferably a hydrophilically substituted C1-C6 alkyl or aryl group, or RIII is an esterified glycol； and wherein 20>；m+n+p+2q&gE；2； is useful for the treatment of ringworm infection caused by Trichophyton tonsurans.
