The present invention relates to compounds of formula (I) ArCH.sub.2 R.sup.1 (I) or a monomethyl or a monoethyl ether thereof (the compound of formula (I) including these ethers may contain no more than 30 carbon atoms in total); ethers, esters thereof; acid addition salts thereof; wherein Ar is a chrysene or substituted chrysene ring system; R.sup.1 contains not more than eight carbon atoms and is a group ##STR1## wherein m is 0 or 1; R.sup.5 is hydrogen; R.sup.6 and R.sup.7 are the same or different and each is hydrogen or C.sub.1-3 alkyl optionally substituted by hydroxy; R.sup.8 and R.sup.9 are the ame or different and each is hydrogen or C.sub.1-3 alkyl; ##STR2## is a five- or six-membered saturated carbocyclic ring; R.sup.10 is hydrogen, methyl or hydroxymethyl; R.sup.11, R.sup.12 and R.sup.13 are the same or different and each is hydrogen or methyl; R.sup.14 is hydrogen, methyl, hydroxy, or hydroxymethyl.
本发明涉及化合物的公式(I)ArCH.sub.2R.sup.1(I)或其单甲基或单
乙基醚(公式(I)的化合物包括这些醚,在总共不超过30个碳原子的情况下);其醚,酯;酸加成盐;其中Ar是
蒽或取代
蒽环系统; R.sup.1含有不超过八个碳原子,是一个组##STR1##其中m为0或1; R.sup.5为氢; R.sup.6和R.sup.7相同或不同,每个都是氢或C.sub.1-3烷基,可以选择性地被羟基取代; R.sup.8和R.sup.9相同或不同,每个都是氢或C.sub.1-3烷基; ##STR2##是一个五元或六元饱和碳环; R.sup.10为氢,甲基或羟甲基; R.sup.11,R.sup.12和R.sup.13相同或不同,每个都是氢或甲基; R.sup.14为氢,甲基,羟基或羟甲基。