FOERFARANDE FOER FRAMSTAELLNING AV NYA TERAPEUTISKT ANVAENDBARA POLYKARBOCYKLISKA AROMATISKA ALKANOLDERIVAT OCH NYA MELLANPRODUKTER

Compounds of the formula (I)or monomethyl or monoethyl ethers thereof, the compounds of formula (I) including their ethers containing no more than 30 carbon atoms in total, or esters or salts thereof; wherein Aris perylene,fluoranthene, chrysene, pyrene or triphenylene, optionally substituted by one or two substituents, or when Ar is anthracene or phenanthrene optionally substituted by one, two or three substituents; said substituents containing not more than four carbon atoms in total when taken together being the same or different and are selected from halogen; cyano; C1-4alkyl or C1-4alkoxy, each optionally substituted by hydroxy or C1-2alkoxy; halogen substituted Cl-2alkyl or C1-2alkoxy; halogen substituted Ci-2 alkyl or C1-2alkoxy; a group S(O)nR2 wherein n is an integer 0,1 or 2 and R2 is C1-2alkyl optionally substituted by hydroxy or C1- 2alkoxy; or Ar is optionally substituted by a group NR3R4 containing not more than 5 carbon atoms wherein R3 and R' are the same or different and each is a Ci-3alkyl group or NR3R4 forms a five-or six-membered heterocyclic ring optionally containing one or two additional heteroatoms; R' contains not more than eight carbon atoms and is a groupor wherein m is 0 or 1;R5 is hydrogen or methyl;R6 and R' are the same or different and each is hydrogen or C1-3alkyl optionally substituted by hydroxy;R8 and R9 are the same or different and each is hydrogen or Ci-3alkyl;-C-C- is a five-or six-membered saturated carbocyclic ring; R10 is hydrogen, methyl or hydroxymethyl; R", R12 and R13 are the same or different and each is hydrogen or methyl; R14 is hydrogen, methyl, hydroxy, or hydroxymethyl; and provided that when Ar is 6-chrysenyl, 3- or 7-fluoranthenyl, 2-triphenylenyl, or 1- or 9-anthracenyl optionally substituted by one or two substituents as hereinbefore defined; other than optionally substituted butyl or butoxy R6 is C1-3alkyl optionally substituted by hydroxy; R7 is hydrogen, C1-3alkyl or hydroxymethyl; R'to R12 and R" are as hereinbefore defined; R13 is hydrogen; and m is 0; R5 is methyl, are disclosed as having biocidal and, in particular, antitumour activity. Methods for preparing the compounds, formulations containing them and their use in medicine are also described.