�ber Reaktionen von Alkylbiguaniden mit Benzoin beimpH der Biguanidbasen
摘要:
Alkylbiguanides 2 a-e react with benzoin (1) at the pH of the base in different ways. 1 undergoes in presence of 2 a, c oxidation to benzoic acid which reacts with the bases 2 a, c to yield 4-phenyl-1,3,5-triazinamines 3 c, 4 c; in presence of 2 b 1 is transformed to benzil, which reacts with 2 b under rearrangement to yield 1-(4-oxo-5,5-diphenyl-2-imidazolin-2-yl)-3,3-dimethylguanidine (5 b). However, the cycloalkylbiguanides 2 d, e react in presence of nitrogen as well as oxygen with 1 to yield piperidine-1-[N-(4,5-diphenylimidazol-2-yl)-carboxamidine] (7 d), resp. morpholine-4-[N-(4,5-diphenylimidazol-2-yl)-carboxamidine] (7 e). The structure of 7 e was established by means of an X-ray structure analysis. All proton- and carbon resonances were assigned on the basis of 2-dimensional NMR data.
The invention provides a compound for use as an inhibitor of Hsp90, the compound having the formula (I): or salts, tautomers, solvates or N-oxides thereof; wherein: A is N or a group CR
3
; R
1
is a monocyclic or bicyclic carbocyclic or heterocyclic ring of 5 to 10 ring members of which up to two ring members may be heteroatoms selected from N, O and S and the remainder are carbon atoms, the carbocyclic or heterocyclic ring being optionally substituted by one or more substituent groups independently selected from R
10
; and R
2
, R
3
and R
10
are as defined in the claims.
An anticancer composition containing a compound represented by general formula (I) or a pharmacologically acceptable acid addition salt thereof. In formula (I), R¹⁰ and R²⁰ may be the same or different from each other and each represents hydrogen, halogen, amino, aralkylamino, nitro, lower alkyl, lower alkoxy, lower alkoxyalkoxy, lower aralkyloxy or acyl; R³⁰ and R⁴⁰ may be the same or different from each other and each represents hydrogen, nicotinoyl, benzoyl or lower alkoxy; and n represents 0 or 1.
[EN] The invention provides a compound for use as an inhibitor of Hsp90, the compound having the formula (I): or salts, tautomers, solvates or N-oxides thereof; wherein: A is N or a group CR3; R1 is a monocyclic or bicyclic carbocyclic or heterocyclic ring of 5 to 10 ring members of which up to two ring members may be heteroatoms selected from N, O and S and the remainder are carbon atoms, the carbocyclic or heterocyclic ring being optionally substituted by one or more substituent groups independently selected from R10; and R2, R3 and R10 are as defined in the claims. [FR] La présente invention concerne un composé inhibiteur de Hsp90 représenté par la formule générale (I), l'un de ses sels, tautomères, solvats ou N-oxydes. Dans cette formule, A est N ou un groupe CR3. R1 est un noyau monocyclique ou bicyclique, carbocyclique ou hétérocyclique portant de 5 à 10 segments dont deux au maximum peuvent être hétéroatomes choisis parmi N, O et S, le reste étant des atomes de carbone. Le noyau carbocyclique ou hétérocyclique est éventuellement substitué par un ou plusieurs groupes substituants choisis indépendamment parmi R10. R2, R3 et R10 sont tels que définis dans les revendications.