Highly lipophilic camptothecin derivatives

Details Highly lipophilic camptothecin derivatives Highly lipophilic camptothecin derivatives

C - Chemistry, Metallurgy

07

D

C07D 491/22 (2006.01) A61K 31/47 (2006.01) A61K 31/4741 (2006.01) A61K 31/695 (2006.01) C07F 7/10 (2006.01)

Patent

CA 2262745

Compounds having formula (I), wherein R1 is acyl of formula -C(O)R2 wherein R2 is C1-6 alkyl, C2- alkenyl, C2-6 alkynyl or aryl; or R1 is C2-8 alkenyl or C2-8 alkynyl, each of which is optionally substituted by one or more halogen atoms, hydroxy groups, C1-6 alkyl or C1-6 alkoxy groups; or R1 is halo; oxo in which case the 1, 2- and 6,7-ring double bonds are replaced by a single 2,6-ring double bond; or -S-R3, wherein R3 is C1-6 alkyl, aryl or halo- or C1-6 alkyl-substituted aryl; or R1 is -S(O)-C1-6 alkyl; -OSO2CF3; or -SiR8R9R10, -R5-SiR8R9R10 or -S-R5-SiR8R9R10 wherein R5 is C1-6 alkylene, C2-6 alkenylene or C2-6 alkynylene and each of R8, R9 and R10 is individually hydrogen or C1-6 alkyl; and R11 is hydrogen, hydroxy or a hydroxy-protecting group which protects the hydroxy group against triflylation; in the form of the free bases or pharmaceutically acceptable acid addition salts thereof are highly lipophilic, lactone stable, do not require metabolic activation, and are anti-neoplastic compounds.

La présente invention concerne des composés de formule (I): où R1 est un acyle de formule -C(O)R2 où R2 est alkyle C1-6, alcényle C2-6, alkynyle C2-6 ou aryle; ou R1 est alcényle C2-8 ou alkynyle C2-8, chacun étant facultativement substitué par un ou plusieurs atomes d'halogène, par des groupes hydroxy, par des groupes alkyle C1-6 ou alcoxy C1-6; ou R1 est halo; oxo, auquel cas les doubles liaisons du noyau 1,2 et 6,7 sont remplacées par une seule double liaison du noyau 2,6; ou -S-R3, où R3 est alkyle C1-6, aryle ou aryle à substitution halo- ou alkyle C1-6; ou R1 est S(O)- alkyle C1-6; -OSO2CF3; ou -SiR8R9R10, -R5-SiR8R9R10 ou -S-R5-SiR8R9R10 où R5 est alkylène C1-6, alcénylène C2-6 ou alkynylène C2-6 et R8, R9 et R10 sont chacun individuellement hydrogène ou alkyle C1-6; et R11 est hydrogène, hydroxy ou un groupe inhibant l'hydroxy protégeant le groupe hydroxy contre la triflylation; sous la forme de bases libres ou de leurs sels d'addition d'acide pharmaceutiquement acceptables, lesquels composés sont hautement lipophiles, stables à la lactone, ne requièrent pas d'activation métabolique, et sont des composés anti-néoplasiques.

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