Details for Patent: 7,569,566

Title:	Inhibitors of tyrosine kinases
Abstract:	The invention relates to compounds of formula ##STR00001## wherein the substituents R1, R2 and R4 have the meaning as set forth and explained in the description of the invention, to processes for the preparation of these compounds, pharmaceutical compositions containing same, the use thereof optionally in combination with one or more other pharmaceutically active compounds for the therapy of a disease which responds to an inhibition of protein kinase activity, especially a neoplastic disease, in particular leukaemia, and a method for the treatment of such a disease.
Inventor(s):	Breitenstein; Werner (Basel, CH), Furet; Pascal (Thann, FR), Jacob; Sandra (Rantzwiller, FR), Manley; Paul W (Arlesheim, CH)
Assignee:	Novartis AG (Basel, CH)
Filing Date:	Apr 02, 2008
Application Number:	12/061,334
Claims:	1. A compound of formula ##STR00004## wherein R.sub.1 and R.sub.2 together represent alkylene with four, five or six carbon atoms optionally mono- or disubstituted by lower alkyl, cycloalkyl, heterocyclyl, phenyl, hydroxy, lower alkoxy, amino, mono- or disubstituted amino, oxo, pyridyl, pyrazinyl or pyrimidinyl; benzalkylene with four or five carbon atoms; oxaalkylene with one oxygen and three or four carbon atoms; or azaalkylene with one nitrogen and three or four carbon atoms wherein nitrogen is unsubstituted or substituted by lower alkyl, phenyl-lower alkyl, lower alkoxycarbonyl-lower alkyl, carboxy-lower alkyl, carbamoyl-lower alkyl, N-mono- or N,N-disubstituted carbamoyl-lower alkyl, cycloalkyl, lower alkoxycarbonyl, carboxy, phenyl, substituted phenyl, pyridinyl, pyrimidinyl, or pyrazinyl; R.sub.4 represents hydrogen, lower alkyl, or halogen; or a N-oxide or pharmaceutically acceptable salts thereof. 2. A compound of formula I according to claim 1 wherein R.sub.1 and R.sub.2 together represent alkylene with four or five carbon atoms, optionally mono- or disubstituted by lower alkyl, cycloalkyl, heterocyclyl, phenyl, hydroxy, lower alkoxy, amino, mono- or disubstituted amino, pyridyl, pyrazinyl or pyrimidinyl; benzalkylene with four or five carbon atoms in the alkylene group; oxaalkylene with one oxygen and four carbon atoms; or azaalkylene with one nitrogen and four carbon atoms wherein nitrogen is unsubstituted or substituted by lower alkyl, phenyl-lower alkyl, lower alkoxycarbonyl-lower alkyl, carboxy-lower alkyl, carbamoyl-lower alkyl, N-mono- or N,N-disubstituted carbamoyl-lower alkyl, cycloalkyl, lower alkoxycarbonyl, phenyl, substituted phenyl, pyridinyl, pyrimidinyl, or pyrazinyl; R.sub.4 represents hydrogen, lower alkyl, or halogen; or a N-oxide or pharmaceutically acceptable salts thereof. 3. A compound of formula I according to claim 1 wherein R.sub.1 and R.sub.2 together represent alkylene with four or five carbon atoms, optionally mono- or disubstituted by lower alkyl, cycloalkyl, phenyl, hydroxy, lower alkoxy, amino, benzoylamino, piperidino, pyridyl, pyrazinyl or pyrimidinyl; benzalkylene with four or five carbon atoms in the alkylene group; oxaalkylene with one oxygen and four carbon atoms; or azaalkylene with one nitrogen and four carbon atoms wherein nitrogen is unsubstituted or substituted by lower alkyl, phenyl-lower alkyl, lower alkoxycarbonyl-lower alkyl, carboxy-lower alkyl, carbamoyl-lower alkyl, carbamoyl-lower alkyl N-mono- or N,N-disubstituted by lower alkyl, phenyl, lower alkylene or oxa-lower alkylene, cycloalkyl, lower alkoxycarbonyl, phenyl, methoxyphenyl, trifluoromethylphenyl, trifluoromethoxyphenyl, pyridinyl, pyrimidinyl, or pyrazinyl; R.sub.4 represents hydrogen or lower alkyl; or a N-oxide or pharmaceutically acceptable salts thereof. 4. A compound of formula I according to claim 1 wherein R.sub.1 and R.sub.2 together represent alkylene with four or five carbon atoms, optionally mono- or disubstituted by phenyl, hydroxy, amino, benzoylamino, or piperidino; benzalkylene with four or five carbon atoms in the alkylene group; oxaalkylene with one oxygen and four carbon atoms; or azaalkylene with one nitrogen and four carbon atoms wherein nitrogen is unsubstituted or substituted by lower alkyl, phenyl-lower alkyl, lower alkoxycarbonyl-lower alkyl, carbamoyl-lower alkyl, pyrrolidinocarbonyl-lower alkyl, morpholinocarbonyl-lower alkyl, cyclopentyl, lower alkoxycarbonyl, phenyl, methoxyphenyl, trifluoromethylphenyl, pyridinyl; pyrimidinyl, or pyrazinyl; R.sub.4 represents hydrogen or methyl; or a N-oxide or pharmaceutically acceptable salts thereof. 5. A process for the synthesis of a compound of the formula ##STR00005## or an N-oxide or a salt thereof, wherein the symbols R.sub.1 R.sub.2 and R.sub.4 are as defined in claim 1, characterized in that a compound of formula II ##STR00006## wherein R.sub.4 is as defined for a compound of formula I, wherein the carboxy group --COOH is in activated form, is reacted with an amine of the formula III R.sub.1--NH--R.sub.2 (III) wherein R.sub.1 and R.sub.2 are as defined for a compound of the formula I, optionally in the presence of a dehydrating agent and an inert base and/or a suitable catalyst, and optionally in the presence of an inert solvent; where the above starting compounds II and III may also be present with functional groups in protected form if necessary and/or in the form of salts, provided a salt-forming group is present and the reaction in salt form is possible; any protecting groups in a protected derivative of a compound of the formula I are removed; and, if so desired, an obtainable compound of formula I is converted into another compound of formula I or a N-oxide thereof, a free compound of formula I is converted into a salt, an obtainable salt of a compound of formula I is converted into the free compound or another salt, and/or a mixture of isomeric compounds of formula I is separated into the individual isomers. 6. A pharmaceutical composition comprising as an active ingredient a compound of formula I according to claim 1 or a N-oxide or a pharmaceutically acceptable salt thereof together with a pharmaceutically acceptable carrier. 7. A method for the treatment of leukemia, which comprises administering a compound of formula I according to claim 1 or a N-oxide or a pharmaceutically acceptable salt thereof.