NOVEL ANALOGUES OF CAMPTOTHECIN, METHOD OF OBTAINING THEM AND PHARMACOLOGICAL COMPOSITIONS CONTAINING SUCH COMPOUNDS

摘要

Camptothecin analogs (I), their enantiomers, diastereoisomers, and salts with acids and bases are new. Camptothecin analogs of formula (I), their enantiomers, diastereoisomers, and salts are new. n = 0-2; R1-R5 = H, halogen, alkyl, alkenyl, alkynyl, perhaloalkyl, 3-11C cycloalkyl, 3-11C cycloalkyl-alkyl, OH, hydroxyalkyl, alkoxy, alkoxyalkyl, alkoxycarbonyl, acyloxy, NO2, CN, aminocarbonyl (optionally substituted on the N by one or two alkyl groups), -(CH2)p-NRaRb, or -O-CO- NRaRb; or two adjacent groups of R2-R5 = -O-(CH2)t-O-; p = 0 - 6; Ra, Rb = H, alkyl, 3-11C cycloalkyl, 3-11C cycloalkyl-alkyl, acyl, optionally substituted aryl or optionally substituted arylalkyl; or NRaRb = pyrrolyl, piperidinyl, or piperazinyl each of the cyclic groups being optionally substituted; t = 1-3; R60, R70n, R80, and R90 = H, OH, alkoxy, or -O-CO-X or -O-CO-NXW; X, W = alkyl, alkenyl, alkynyl, 3-11C cycloalkyl, 3-11C cycloalkyl-alkyl, optionally substituted aryl, or optionally substituted aryl alkyl; R61, R71n, R81, and R91 = H, alkyl, alkenyl or alkynyl; or vicinal pairs may together form a bond or an oxirane group; or R60+R61, R70n+R71n, R80+R81n and/or R90+R91 = oxo or -O-(CH2)t1-O-; t1 = 1-3 with the proviso that R60, R70n, R80, R90, R61, R71n, R81, and R91 are not all H. Alkyl, alkoxy and acyl groups have 1-6C; alkenyl have 2-6C and 1-3 double bonds; alkynyl have 2-6C and 1-3 triple bonds; aryl = phenyl or naphthyl; 'substituted' on aryl or aryl alkyl groups means by one or more halogens, alkyl, alkoxy, OH, CN, NO2, amino or mono- or dialkylamino groups; 'substituted' on heterocyclic groups means by one or more alkyl, alkoxy, aryl, aryl alkyl, aryloxy and/or aryloxy alkyl groups. An Independent claim is included for the preparation of (I).