Phenanthro[2,3-6]thiophene derivatives, pharmaceutical compositions and
申请人:Burroughs Wellcome Co.
公开号:US04910218A1
公开(公告)日:1990-03-20
The present invention relates to anti tumor compounds of formula (I) ArCH.sub.2 R.sup.1 (I) or a monomethyl or monoethyl ether thereof (the compound of formula (I) including these ethers may contain no more than 29 carbon atoms in total); ethers, esters thereof; acid addition salts thereof; wherein Ar is a fused tetracyclic aromatic ring system comprised of 5-membered and 6-membered rings and contains at least one heteroatom and 3 aromatic rings and a total of no more than 18 ring atoms, or a substituted derivative thereof; the heteroatom is preferably oxygen, sulfur or nitrogen; when it is nitrogen this is substituted by hydrogen, methyl or ethyl; 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.1-5 alkyl optionally substituted by hydroxy; R.sup.8 and R.sup.9 are the same 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.