EP2167459A1 - Neue triazenverbindungen zur behandlung von krebs - Google Patents

Neue triazenverbindungen zur behandlung von krebs

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Publication number
EP2167459A1
EP2167459A1 EP08774712A EP08774712A EP2167459A1 EP 2167459 A1 EP2167459 A1 EP 2167459A1 EP 08774712 A EP08774712 A EP 08774712A EP 08774712 A EP08774712 A EP 08774712A EP 2167459 A1 EP2167459 A1 EP 2167459A1
Authority
EP
European Patent Office
Prior art keywords
group
optionally substituted
formula
compounds
hydrogen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08774712A
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German (de)
English (en)
French (fr)
Inventor
Rudolf Reiter
Jochen Kalbe
Heinz Förster
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ROEBERS, JOHANNES
Original Assignee
TRIN PHARMA GmbH
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Priority to EP08774712A priority Critical patent/EP2167459A1/de
Publication of EP2167459A1 publication Critical patent/EP2167459A1/de
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C245/00—Compounds containing chains of at least two nitrogen atoms with at least one nitrogen-to-nitrogen multiple bond
    • C07C245/22—Compounds containing chains of at least two nitrogen atoms with at least one nitrogen-to-nitrogen multiple bond containing chains of three or more nitrogen atoms with one or more nitrogen-to-nitrogen double bonds
    • C07C245/24—Chains of only three nitrogen atoms, e.g. diazoamines
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
    • A61P15/14—Drugs for genital or sexual disorders; Contraceptives for lactation disorders, e.g. galactorrhoea
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A61P35/04—Antineoplastic agents specific for metastasis
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
    • C07C309/01—Sulfonic acids
    • C07C309/02—Sulfonic acids having sulfo groups bound to acyclic carbon atoms
    • C07C309/03—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
    • C07C309/13—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton
    • C07C309/14—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton containing amino groups bound to the carbon skeleton
    • C07C309/15—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton containing amino groups bound to the carbon skeleton the nitrogen atom of at least one of the amino groups being part of any of the groups, X being a hetero atom, Y being any atom
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
    • C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
    • C07D233/64—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms, e.g. histidine

Definitions

  • the present invention relates to novel pharmaceutical compounds, to processes for their preparation, to pharmaceutical compositions comprising them, and to the use thereof for the treatment of human cancers.
  • the novel T ⁇ azen compounds are distinguished from the known T ⁇ azen compounds by an improved therapeutic breadth, ie by lower side effects with high anti-tumor activity
  • Triacendivates were extensively researched in the 1970s for their cytostatic efficacy and the potential for the treatment of cancer. However, due to their potent side effects and toxicity of these cytochemicals, they have never been widely used in tumor treatment. An exception is dacarbazine (DTIC), which is a prodrug of monomethyl-t ⁇ azeno-imidazole-carboxamide (MTIC) and is mainly used to combat melanoma (Montgomery JA (1 976) Cancer Treat Rep 60, 205-21 1).
  • DTIC dacarbazine
  • MTIC monomethyl-t ⁇ azeno-imidazole-carboxamide
  • the object of the present invention was thus to find cytostatic Triazende ⁇ vate with reduced toxicity with improved efficacy in order to make them available for therapy in humans, in particular for the treatment of human cancers
  • the inventors found new T ⁇ azenyl compounds with high cytostatic activity, whose toxicity is significantly reduced.
  • the invention therefore relates to compounds of the formula (1)
  • R 1 and R 2 are the same or different and are each selected from the group consisting of. optionally substituted alkyl, optionally substituted alkenyl, optionally substituted aryl, optionally substituted alkylaryl,
  • R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , and R 10 are the same or different and are each selected from the group consisting of
  • Aminosulfonyl optionally substituted alkyl, optionally substituted alkoxy, optionally substituted alkenyl, optionally substituted aryl, optionally substituted alkylaryl;
  • R 1 1 is optionally substituted alkanediyl or alkenediyl optionally substituted;
  • R 12 is hydrogen and R 1 3 is optionally substituted alkyl or
  • Hydroxy is, or
  • R 13 is hydrogen and R 1 2 is optionally substituted alkyl or
  • Hydroxy is, or
  • R 1 2 and R 1 3 are each alkyl, wherein at least one of the alkyl groups has at least one substituent, or
  • R 1 2 and R 1 3 together with the nitrogen atom to which they are attached form a saturated or unsaturated, optionally substituted 5 to 8-gl ⁇ edr ⁇ gen Cyclus, which may optionally contain further heteroatoms, and
  • X 1 is selected from the group consisting of a single bond Carbonyi, sulfur, oxygen, sulfoxy, sulfonyl, azo, and an optionally substituted, saturated or _ ⁇
  • R 1 and R 2 are the same or different, and are each selected from the group consisting of optionally substituted alkyl, optionally substituted alkenyl, optionally substituted aryl, and optionally substituted alkylaryl
  • Optionally substituted alkyl includes in the context of the entire invention, ie also in connection with the other substituent groups (where indicated, as in the case of R 12 and R 13 , other possibilities may be included), preferably a straight-chain or branched alkyl having 1 to 8 , preferably 1 to 6, carbon atoms, cycloalkyl having 3 to 8, preferably 5 or 6 carbon atoms, or alkyl having 1 to 4 carbon atoms, which is substituted by cycloalkyl, which may optionally each preferably carry 1 to 3 substituents, preferably from the group be selected, which consists of.
  • Hydroxy, halogen and cyano Halogen here and in the context of the present invention includes fluorine, chlorine, bromine and iodine, preferably fluorine or chlorine.
  • one or more, preferably 1 to 3, carbon atoms can be substituted by heteroanalogical groups which contain nitrogen, oxygen or This means in particular that, for example, one or more methylene groups in the alkyl radicals may be replaced by NH, O or S.
  • alkyl radicals having 1 to 8 carbon atoms include a methyl group, an ethyl group, an n-propyl group, a ⁇ -propyl group, an n-butyl group, a ⁇ -butyl group, a sec-butyl group, a t-butyl group, an n-pentyl group, a 1-pentyl group, a sec-pentyl group, an f-pentyl group, a 2-methylbutyl group, an n-hexyl group, a 1-methylpentyl group, a 2-methylpentyl group, a 3-pentyl group, a Methylpentyl group, a 4-methylpentyl group, a 1-ethylbutyl group, a 2-ethylbutyl group, a 3-ethylbutyl group, a 1-dimethylbutyl group, a 2,2-dimethylbutyl group,
  • Methylheptyl group a 4-methylheptyl group, a 5-methylheptyl group, a 6-methylheptyegroup, a 1-ethylhexyl group, a 2-ethylhexyl group, a 3-ethylhexyl group, a 4-ethylhexyl group, a 5-ethylhexyl group, a 1, 1-dimethylhexyl group, a 2, 2-
  • Dimethylhexyl group a 3,3-dimethylhexyl group, a 4,4-dimethylhexyl group, a 5,5-dimethylhexyl group, a 1-propylpentyl group, a 2-propylpentyl group, etc.
  • alkyl groups resulting from exchange with one or more heteroanalogous groups are preferably those in which one or more methylene groups are replaced by -O- to form an ether group, such as methoxymethyl , Ethoxymethyl, 2-methoxyethylene, etc.
  • polyether groups are also included in the definition of alkyl
  • Cycloalkyl radicals having 3 to 8 carbon atoms preferably include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, etc.
  • a cyclopropyl group, a cyclobutyl group, a cyclopentyl group and a cyclohexyl group are heterocyclic alkyl groups by exchanging methylene with hetero analogues
  • Groups are formed from Cycloalkyi, for example, 5- or 6-gl ⁇ ed ⁇ ge heterocyclic radicals, such as tetrahydrofuryl, pyrrolidmyl, piperidyl or tetrahydrophyrenyl, which may optionally be condensed with aromatic rings, etc
  • examples of a halogen-substituted linear or branched alkyl group having 1 to 8 carbon atoms include a fluoromethyl group, a difluoromethyl group, a trifluoromethyl group, a chloromethyl group, a dichloromethyl group, a chloromethyl group, a bromomethyl group, a dibromomethyl group, a tribromomethyl group, a 1-fluoroethyl group, a 1-chloroethyl group, a 1-bromethyl group, a 2-fluoroethyl group, a 2-chloroethyl group, a 2-bromoethyl group, a 1, 2-difluoroethyl group, a 1, 2-D ⁇ chlorethyl distr, a 1, 2-dibromoethyl group, a 2,2, 2-Tr ⁇ fluorethyl distr, a fluoromethyl group, a difluoromethyl group, a trifluor
  • hydroxy-substituted alkyl group examples include the above-mentioned alkyl groups having 1 to 3 hydroxyl groups, such as hydroxymethyl, 2-hydroxyethyl, 3-hydroxypropyl, etc
  • Optionally substituted alkenyl preferably includes a 1 throughout the scope of the invention
  • Straight-chain or branched-chain alkenyl having 2 to 8 carbon atoms and cycloalkenyl having 3 to 8 carbon atoms which may be optionally substituted by preferably 1 to 3 substituents, such as hydroxy, halogen or alkoxy, examples include vinyl, 1-methylvinyl, allyl, 1-butenyl , Isopropenyl, cyclopropenyl, cyclobutenyl, cyclopentenyl, cyclohexenyl. Vinyl or allyl are preferred
  • Optionally substituted aryl preferably includes throughout the scope of the invention
  • substituents selected from hydroxy, halogen, cyano, alkyl, acyl and alkoxy.
  • Alkoxy as a substituent of aryl here and hereinafter includes, for example, an Em mentioned above alkyl which is bonded to aryl via an oxygen atom, such as a linear or branched alkoxy radical having up to 6 carbon atoms, such as a methoxy group, an ethoxy group, an n-propyloxy group, a ⁇ -propyloxy group, an n-butyloxy group, a ⁇ -butoxy group, a sec-butoxy group, a t-butoxy group, an n-pentyloxy group, a ⁇ -pentyloxy group, a sec-pentyloxy group, a t-pentyloxy group, a 2-methylbutoxy group, an n-hexyloxy group, an ⁇ -hexyloxy group, a t-hexyloxy group, a sec-hexyloxy group, a 2-methylpentyloxy group, a 3-methylpent
  • acyl as the substituent of aryl includes here and hereinafter an aiiphaticians acyl, aromatic Acy 1 as C l to Co alkanoyl, such as formyl, acetyl, Prop'onyl butyryl, isobutyryl, valeryl, isovaleryl, pivaloyl, hexanoyl, etc, as well as C6 to C10 O aroyl, such as benzoyl, tol
  • Aromatic hydrocarbon radicals having from 6 to 14 carbon atoms include, for example, phenyl, naphthyl, phenanthrenyl and anthracenyl, which may be optionally substituted. Phenyl is preferred.
  • Heteroaromatic radicals include, for example, 1- pyridyl, pyridyl-N-oxide, pyrimidinyl, pyridazinyl, pyrazinyl, thienyl, furyl, pyrrolyl, pyrazolyl, imidazolyl, thiazolyl, oxazolyl or isoxazolyl, indinyl, indolyl, benzo [b] thienyl, benzo [b] furyl, indazolyl, quinolyl, isoquinolyl, Naphthy ⁇ dinyl, quinazolmyl 5- or ⁇ -gl ⁇ edr ⁇ ge aromatic heterocycles such as pyridine, Py ⁇ dyl N-oxide, Py ⁇ midyl, Py ⁇ dazinyl, furyl and thienyl are preferred
  • Optionally substituted alkylaryl preferably includes throughout the scope of the invention:
  • arylalkyl having 1 to 8, preferably 1 to 4 carbon atoms, as described above, which is substituted by aryl, as described above.
  • Preferred arylalkyl is benzyl
  • R 1 and R 2 are each alkyl, and are preferably the same or different and each is straight or branched alkyl of 1 to 6, preferably 1 to 4, more preferably 1 to 3 carbon atoms, with linear alkyl being preferred 1 and R 2 are methyl or ethyl Most preferably, R 1 and R 2 are methyl
  • R 3, R 4, R 5, R 6, R 7, R 8, R 9 and R 1 0 are identical or different and are each selected from the group consists
  • Ammosulfonyl optionally substituted aikyl, optionally substituted alkoxy, optionally substituted alkenyl, optionally substituted aryl, optionally substituted alkylaryl
  • aminocarbonyl preferably represents carbamoyl (H 2 NCO-) or mono in the context of the entire invention - or Diaikylammocarbonyl (H (alkyl) NCO- or (alkyl) 2 NCO-), which can be referred to the above explanations with regard to the definition of alkyl and also optionally substituted alkyl includes Furthermore, ammosulfonyl in the context of the invention as a whole Sulfamoyl (H 2 N-SO 2 -) or mono- or dialkylaminosulfonyl (alkyl) 2 N-SO 2 , wherein reference may be made to the above explanations for the definition of alkyl and also includes optionally substituted alkyl.
  • Optionally substituted alkoxy is included above mentioned exemplified as a substituent of aryl it alkoxy, which may optionally be substituted by preferably 1 to 3 substituents, which are preferably selected from the group of halogen, hydroxy and cyano
  • R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , and R 10 are preferably selected from hydrogen, Halogen,
  • Aminosulfonyl optionally substituted alkyl, and optionally substituted alkoxy
  • R 3, R 4, R 5, R 6, R 7, R 8, R 9, and R 10 are selected from 1 is hydrogen, halogen, and optionally substituted alkoxy
  • At least 6, more preferably at least 7 of the radicals R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 are hydrogen.
  • all radicals R 3 , R 4 , R ö , R 6 , R 7 , R 8 , R 9 and R ° are hydrogen.
  • R 1 1 is in the general formula (1) optionally substituted alkanediyl or optionally substituted alkenediyl
  • Optionally substituted alkanediyl is preferably a bivalent straight or branched alkanediyl radical having 1 to 7 preferably 1 to 6, more preferably 1 to 4 carbon atoms, which is optionally 1 to 3 May carry substituents which are selected from the group consisting of hydroxy, halogen and cyano and may be mentioned by way of example and preferably methylene, 1, 2-ethanediyl, ethane-1, 1-diyl, 1, 3-propylene, propane-1, 1 -diyl, propane-1, 2-d ⁇ yl, propane-2, 2-d ⁇ yl, 1, 4-butylene, butane-1, 2-d ⁇ yl, butane-1, 3-d ⁇ yl, butane-2, 3-d ⁇ yl, Pentan-1, 5-d ⁇ yl, pentane-2,4-d ⁇ yl, 3-methyl-p
  • R 11 is particularly preferably alkanediyl, more preferably alkanediyl having 1 to 3 carbon atoms, more preferably 1, 2-ethanediyl (-CH 2 CH 2 -) or 1, 3-propanediyl (-CH 2 CH 2 CH 2 Most preferably R 11 is 1,2-ethanediyl (-CH 2 CH 2 -)
  • X 1 is selected from the group consisting of a single bond
  • An optionally substituted, saturated or unsaturated ahphatic radical having 1 to 6 carbon atoms for X 1 in the context of the present invention includes an optionally substituted alkanediyl as defined above, optionally substituted alkenediyl as defined above, and alkynediyl.
  • R 1? is hydrogen and R 13 is optionally substituted alkyl or hydroxyl, or
  • R 1 3 is hydrogen and R 1 2 is optionally substituted alkyl or hydroxyl
  • R 1 2 and R 1 3 are each alkyl, wherein at least one of the alkyl groups has at least one substituent, R 1 2 and R 1 3 are thus substituted alkyl, or
  • R 1 2 and R 1 3 form, together with the nitrogen atom to which they are bonded, a saturated or unsaturated, optionally substituted 5 to 8-gl ⁇ edr ⁇ gen cycle, which may optionally contain further heteroatoms
  • R 1 2 is hydrogen, and R 1 3 is substituted alkyl, or R 1 3 is hydrogen, and R 1 2 is substituted alkyl
  • Alkyl here includes straight-chain or branched alkyl having 1 to 8, preferably 1 to 6, carbon atoms, cycloalkyl having 3 to 8, preferably 5 or 6 carbon atoms, or alkyl having 1 to 4 carbon atoms which is substituted by cycloalkyl, a possible examples of alkyl Reference may be made to the examples mentioned above for R 1 and R 2.
  • Alkyl is particularly preferably a C 1 to Co, preferably C 1 to C 5, alkyl group which may be branched or straight-chain, in particular Methyl ethyl, propyl, 2-methylpropanol, butyl, such as n-butyl, 2-methylbutyl, 3-methylbutyl, pentyl, such as p-pentyi, or n-hexyl.
  • Said alkyl groups are substituted by at least one substituent.
  • Preferred substituents on alkyl are polar functional groups which contain one or more heteroatoms, which are preferably selected from N, O, S, halogen, such as Cl, F, Br and I substituents on alkyl include in the definition of R 12 and R 13 in particular
  • X 2 is selected from the group that consists of
  • R 1 4 is selected from the group consisting of
  • X 2 is preferably carbonyl and R 1 4 is hydroxy
  • R 1 2 and R 1 3 More preferred substituents on alkyl in the definition of R 1 2 and R 1 3 include, besides the preferred existing group -X 2 R 1 4, the following Substituents
  • Alkylthio in particular methylthio
  • Acylammmo where Acy! in particular as defined above, saturated, unsaturated or aromatic, mono- or bicyclic, optionally substituted heterocyclic radicals, for example those mentioned above, optionally substituted heteroaromatic radicals, preferably imidazolyl, such as imidazol-5-yl, 1H-indolyl, such as 1H- indole-3-yl, optionally substituted aryl as described above, in particular phenyl, hydroxyphenyl, such as 4-hydroxyphenyl,
  • Alkoxyphenyl such as methoxyphenyl
  • Alkyl in the definition of R 1 2 and R 1 3 preferably has one or two substituents, of which preferably at least one substituent is the group -X 2 R 14 represents
  • R 1 2 is hydrogen and R 1 3 is a radical A of a compound of the formula H 2 NA or
  • R l ⁇ is hydrogen and R 2 is a radical A of a compound of the formula
  • A is a radical which is formally removed by cleavage of an amino group
  • amino acid H 2 NA is glycine
  • R or R 1 3 is a radical of the formula
  • More preferred compounds according to the invention are those in which A is the radical which is derived formally by cleavage of the amino group from an amino acid or an amino acid derivative (for clarification).
  • A is the radical which is derived formally by cleavage of the amino group from an amino acid or an amino acid derivative (for clarification).
  • the formal cleavage of the amino group from an amino acid does not mean the cleavage of an amino group from a possibly present amide group (H 2 N-CO-) but an amino group which is bonded to a carbon atom, that except H or C carries no further substituents
  • R 1 2 or R 13 would be
  • the residue A is derived from the cleavage of an H 2 N group from the group of the following amino acids Al ⁇ nin, according to the case where R 1 2 or R 1 3 ethyl, substituted with
  • Glutamine corresponding to the case where R 1 2 or R 1 3 is propyl substituted with aminocarbonyl (carbamoyl) and carboxy,
  • Lysine according to the case where R 1 2 or R 1 3 n-pentyl, substituted with carboxy and amino, wherein the bond via the
  • Phenylalanine corresponding to the case where R 1 2 or R 1 3 is ethyl substituted with carboxy and phenyl,
  • Carboxy and hydroxy is Threonine, corresponding to the case where R 12 or R 13 is n-propyl substituted with carboxy and hydroxy
  • Tyrosine according to the case where R 1 2 or R 1 3 ethyl, substituted with
  • Carboxy and Hydroxyphenyi is, and
  • GABA 4-aminobutyric acid
  • L-homose ⁇ n (2-amino-4-hydroxybutyric acid), ornithine (2,5-diamino novaleric acid
  • L- (+) - -C ⁇ trullin N5- (aminocarbonyl) -L-ornithine
  • 5- Hydroxytryptophan (5-HTP)
  • ß-Aian ⁇ n (3-aminopropionic acid
  • ß-methylammo-Alan ⁇ n D-VaIm
  • D-Alan ⁇ n D-glutamic acid
  • the derivatives of the aforementioned amino acid compounds H 2 NA are in particular those which have arisen by exchange of a hydrogen atom for a hydroxyl function
  • radical A is derived formally by cleavage of the H 2 N group from the group of the amino acids glycine and its derivatives and histidine and derivatives thereof
  • radical A is derived by cleavage of the H 2 N group from the group of the following amino acids or amino acid derivatives: glycine,
  • Erfmdungsgenote are the compounds wherein the amino acids H 2 NA have the L-configuration, or wherein R 1? or R 1 3 represent the radical A of such an amino acid, and preference is given to those compounds in which the underlying Aminosaured ⁇ vate, the polyamino acids and the Polyaminosaured ⁇ vate derived from amino acids H 2 NA, which have the L configuration
  • R 1 3 alkyl are each 1 2 and R, wherein at least one of the alkyl groups one, preferably one or two substituents comprising at least, can be in terms of the definitions or examples of alkyl to the above for R 1 or R indicated in alternative 1)
  • 2 or R 1 2 and R 1 3 are referenced substituents on alkyl include thus, for "optionally substituted alkyl" in the definition of R 1 and R 2 given example, such as hydroxy, halogen and cyano
  • Substituents of alkyl in the alternative 2) also the examples given for R 1 2 and R 1 3 in the above-described alternative 1), such as
  • Alkylthio in particular methylthio
  • acyl in which acyl is in particular as defined above, saturated, unsaturated or aromatic, mono- or bicyclic, optionally substituted heterocyclic radicals, such as, for example, the above-mentioned optionally substituted heteroaromatic radicals, preferably imidazolyl, such as lm ⁇ dazol-5-yl, 1 H-indolyl, such as IH indol-3-yl, optionally substituted Aryl, as described above, in particular phenyl, hydroxyphenyl, such as 4-hydroxyphenyl,
  • Alkoxyphenyl such as methoxyphenyl
  • XV 2 2 un ⁇ d, ⁇ ⁇ R 1 n i 4 4 are as defined above, and in particular the radicals which formally from the cleavage of the NH 2 - group resulting from the amino acids NH 2 -A
  • R 12 and R 13 together with the nitrogen atom to which they are attached form a saturated or unsaturated, optionally substituted 5 to 8-glifluorinated cycle which may optionally contain further heteroatoms include possible ring systems, consisting of R 1 2 and R 13 and the nitrogen atom to which they are attached, preferably 5- or 6-membered, optionally substituted rings such as P ⁇ per ⁇ d ⁇ n- 1 -yl, Morphol ⁇ n-4-yl, rh ⁇ omorphol ⁇ n-4 yl, pyrrolidine!
  • prolyl or hydroxy-prolyl
  • T ⁇ azene compounds which are particularly preferred according to the invention are those in which R 1 and R 2 are each alkyl, preferably alkyl having 1 to 6 carbon atoms, more preferably methyl
  • T ⁇ azentheticen are those wherein R 3, R 4, R 5, R 6, R 7, R 8, R 9 and R 1 0 are each hydrogen
  • Tri ⁇ zenverbmditch particularly preferred according to the invention are those in which X 1 C ⁇ rbonyl
  • Particularly preferred coupling compounds according to the invention are those in which R 1 is alkynyl, preferably linear alkanediyl having 1 to 6 carbon atoms, more preferably methylene (-CH 2 -) or ethane-1, 2-diyl.
  • triazene compounds are those in which the radicals
  • triazene compounds are those in which the radicals
  • R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 are each hydrogen
  • R 1 1 is alkanediyl
  • R 12 is hydrogen and R 1 3 is a radical A of a compound of the formula H 2 NA or
  • R 13 is hydrogen and R ' 2 is a radical A of a compound of the formula H 2 N
  • A is a radical which is derived by cleavage of the amino group (-NH 2 ) from a natural or synthetic amino acid, a natural or synthetic Aminosaured ⁇ vat or a Polyaminosaure or a Polyaminosaurederivat, and
  • X 1 is carbonyl (-CO-).
  • R 1 2 is hydrogen and R 13 is substituted alkyl, or R 13 is hydrogen and R 12 is substituted alky! is in which
  • substituted alkyl is an alkyl group which has at least one sulfonic acid radical, sulfonic acid ester radical or a sulfonamido radical
  • substituted alkyl in the definition of R 12 or R 1 3 is a radical of the forms are particularly preferred!
  • H 2 which is derived from Tau ⁇ n (2-Aminoethansulfonsaure) T ⁇ zen compounds of the invention containing basic groups can be used in the form of their pharmaceutically acceptable salts with pharmaceutically acceptable acids such as salts with mineral acids, carboxylic acids and sulfonic acids such as hydrochloric, hydrobromic, hydroiodic, sulfuric, phosphoric, tartaric , Methanesulfonic acid, hydroxyethanesulfonic acid, aceturic acid (acetylglycine), maleic acid, propionic acid, fumaric acid, toluenesulfonic acid, benzenesulfonic acid, trifluoroacetic acid, naphthalenedisulfonic acid 1, 5, sahcylic acid, benzoic acid, lactic acid, malic acid, 3-hydroxy-2-naphthoic acid-2, citric acid or acetic acid,
  • pharmaceutically acceptable acids such as salts with mineral acids, carboxylic acids and
  • Triazene compounds of the invention containing acidic groups may be employed in the form of their pharmaceutically acceptable salts with pharmaceutically acceptable bases, such as, for example, salts with alkali or alkaline earth hydroxides, such as NaOH, KOH, Ca (OH) 2 , Mg (OH) 7 etc., amine compounds such as ethylamine, diethylamine, trimethylamine, ethyldiisopropylamine, ethanolamine, diethanolamine, triethanolamine, methylglycine, dicyclohexylamine, dimethylammoethanol, procaine, dibenzylamine, N-methylmorpholine, arginine, lysine, ethylenediamine, N-methylpiperidine 2-amino-2-methyl- propanoi (I), 2-amino-2-methyl-propanediol (1,3), 2-amino-2-hydroxyl-methyl-propanediol (1,3) (TRIS) etc.
  • bases such as, for example
  • the water solubility or the solubility in physiological saline solution and thus possibly also the activity of the compounds according to the invention can be significantly influenced by salt formation in general, especially by the choice of the counterion.
  • Example 4 ⁇ a looseness in water at 25 ° C of about 4 g / L, whereas the TRIS salt has a similarity in water at 25 ° C of about 250 g / L
  • the waterlessness or the detachment in physiological saline solution and thus possibly also the activity of the compounds according to the invention may also depend significantly on the basic structure of the compounds themselves.
  • the compound of example 2 a) surprisingly has a very good water-solubility of 500 g / L at room temperature (25 ° C) which is much higher than that of the compound of Example 4a) (4g / L) even though it has one more methylene group
  • a high Wasserloshchkeit of the compounds of the invention is not necessarily crucial, since in the bloodstream probably the vast majority of the substance present protein bound is of importance in general rather that the substances are recognized as a substrate for an endogenous transport system in the context of the present invention probably, in particular, the so-called OATs (organic anion transporters) and OATPs (organic anion transporter proteins) of importance But these have no 1 00% specificity for anions Example of this is the digitoxin Similarly, also peptide transporters as relevant uptake and excretion mechanisms, the amino acid or amino acid amide -Rest recognize, be discussed
  • the invention compounds may exist in the presence of asymmetric carbon atoms in stereoisomeric forms (enantiomers, diastereomers).
  • the invention therefore includes the use of the enantiomers or diastereomers and their respective mixtures.
  • the enantiomerically pure forms may optionally be prepared by conventional optical resolution methods such as fractionated crystallization of diastereomers thereof can be obtained therefrom by reaction with optically active compounds. If the compounds according to the invention can occur in tautomeric forms, the present invention encompasses the use of all tautomeric forms
  • the present invention further relates to a process for the preparation of the compounds of formula (1) which comprises the step
  • ode r a salt such as in particular the sodium or Kahum C ⁇ lciumsalz thereof, with a compound of formula (4)
  • R 1 to R 1 are 3 and X are as defined above
  • the preparation of the T ⁇ azentagenen (3) can be obtained analogously to the method described in DE 1 7931 1 5 Al by diazotization of the underlying amino compound, which in turn is obtained by reduction from the corresponding nitro compound
  • the following scheme illustrates the preparation method using the example of ⁇ 2- 4- (4- [(IE) -3-dimethyl-1-triazenyl] -benzoyl) -phenoxy] -prop ⁇ onylam ⁇ no ⁇ ess ⁇ gsaure
  • step 5 amino acids or derivatives thereof are used in step 5
  • hydroxamic acid derivatives in which one of R 1? or R 13 is hydrogen and the other hydroxyl can, for example, analogously to US 200701 35424 A (for example, intermediate 24) by reacting the acid
  • x is from 2 to 6, preferably 2, and their salts
  • the present invention furthermore relates to compounds of the formula (1) for use as medicaments and to the use of the compounds of the formula (1) for the preparation of a medicament, in particular for the treatment of cancers
  • the compounds according to the invention can be used, for example, for the treatment of the following tumor types: adenocarcinoma, choroidal melanoma, acute leukemia, acoustic neuroma, ampoule carcinoma, anal carcinoma, astrocytomas, basalioma, pancreatic cancer, connective tissue tumor, bladder cancer, bronchial carcinoma, non-small cell lung carcinoma, breast cancer, Burkitt's lymphoma, corpus carcinoma, CUP - syndrome, colon cancer, small intestine cancer, small intestine tumors, ovarian cancer, endornetrium carcinoma, ependymoma, epithelial cancers, Ewmg tumors, gastric tumors, gall bladder cancer, bile carcinomas, uterine cancer, cervical cancer, glioblastomas, gynecological tumors, ear, nose and throat tumors, hematological neoplasias, Hairy cell leukemia, urinary cancers, cancer of the head,
  • the compounds according to the invention are particularly preferably used for the treatment of breast cancer, colon cancer or melanoma
  • the compounds according to the invention are particularly preferably used for the treatment of breast cancer
  • the invention further relates to the use of the compounds of the formula (1) in combination with at least one further chemotherapeutic agent for the treatment of cancer
  • the compounds of the present invention may also be used in combination with other chemotherapeutic agents known in the treatment of cancer or tumors and / or with drugs which are administered concomitantly with the chemotherapeutic agents during chemotherapy.
  • chemotherapeutic agents which may be used in combination and others in US Pat Chemotherapy used drugs can be found for example in WO2007061 978 under the keyword "Combmation Therapy" (page 23, line 1 to page 30, line 1 8) or in US20071 35424A1 (sections 1 53 to 1 71), to which also in full extent Reference is made
  • the present invention furthermore relates to pharmaceutical compositions comprising at least one of the compounds of the formula (1) together with at least one pharmacologically acceptable carrier, excipient or solvent.
  • compositions are suitable, for example for inhalation or intravenous, intraperitoneal, intramuscular, intravaginal, intrabuccal, percutaneous, subcutaneous, mucocutaneous, oral, rectal, transdermal, topical, intradermal, intragasal or intracutaneous administration and are in the form of pills, tablets, enteric-coated tablets, film-coated tablets, for example.
  • the compounds of the invention may be administered in pharmaceutical composition which may contain various organic or inorganic carriers and / or auxiliary materials commonly used for pharmaceutical purposes, in particular solid drug formulations, such as excipients (such as sucrose, starch, mannitol, sorbitol, Lactose, glucose, cellulose, talc, calcium phosphate, calcium carbonate), binders (such as cellulose, methylcellulose, hydroxypropylcellulose, polypropylpyrrolidone, gelatin, gum arabic, polyethyleneglycol, sucrose, starch), disintegrants (such as starch, hydrolyzed starch, carboxymethylcellulose, calcium salt of carboxymethylcellulose, hydroxypropyl starch , Sodium glycol starch, sodium bicarbonate, calcium phosphate, calcium citrate), lubricants or lubricants (such as Mineral acid, talc, sodium lauryl sulfate), a flavoring agent (such as citric acid, menthol, glycine, orange powder), preserv
  • Liquid drug formulations such as solutions, suspensions and gels, usually contain a liquid carrier, such as water and / or pharmaceutically-acceptable organic solvents. Furthermore, such liquid formulations may also contain pH adjuvants, emulsifiers or dispersing agents, buffering agents, preservatives, wetting agents, gelling agents (
  • the compositions may be isotonic, that is, they may have the same osmotic pressure as blood.
  • the isotonicity of the composition may be enhanced by the use of sodium chloride or other pharmaceutically acceptable agents such as dextrose, maltose, boric acid , Sodium tartrate, propylene glycol or other inorganic or organic soluble substances.
  • the viscosity of the liquid compositions can be adjusted using a pharmaceutically acceptable thickener such as methylcellulose.
  • a pharmaceutically acceptable thickener such as methylcellulose.
  • suitable thickening agents include, for example, xanthan, carboxymethylcellulose, hydroxypropylcellulose, carbomer and the like. The preferred concentration of thickening agent will depend on the agent chosen.
  • preservatives may be used to obtain benzyl alcohol may be suitable although a variety of preservatives including, for example, paraben, thimerosal, chlorobutanol or bezalkonium chloride may also be used to enhance the durability of the liquid composition;
  • a variety of preservatives including, for example, paraben, thimerosal, chlorobutanol or bezalkonium chloride may also be used to enhance the durability of the liquid composition;
  • St ⁇ bilmaschinesmittel for the pharmaceutical solid or liquid formulations of the compounds of the invention, in particular the compound of Example 2a proves in particular the Diethylent ⁇ aminpentaessigsaure (DTPA)
  • the active ingredient may be administered, for example, at a unit dose of 0.01 mg / kg to 500 mg / kg of body weight, for example up to 1 to 4 times a day.
  • the dosage may vary depending on the age, weight, condition of the patient, severity of the disease or type increased or decreased
  • the alcohol is distilled off u, the residue under stirring with 3 l hot
  • the resulting diazonium salt solution is added to a solution of 1 5 g of Na 2 CO 3 u, 10 g of a 45% strength aqueous dimethylamine solution and 50 ml
  • reaction mixture is kept cold, the precipitated salt is filtered off and recrystallized from water,
  • Step 1
  • the product can also be prepared by saponification of the underlying nitrite according to the following scheme:
  • Step 2
  • reaction composition at 0, 5 0 C and overnight at 25 ° C.
  • the TLC was checked and the reaction composition was quenched in a mixture of hexane (8 L) and ice-water (15 L). The composition was stirred and the solids were filtered off. The product was washed with hexane and dried
  • step 2 The product from step 2 was taken up in ethanol and cooled to 1 0 0 C. Aqueous solution of the sodium sulfide was added dropwise at 1 0- 1 5 0 C and stirred overnight at 25 0 C ethanol was removed and water [AI] was under reduced pressure added acetic acid was added to adjust the pH to 6. The pH of the filtrate was adjusted to 3 with acetic acid and extracted with ethyl acetate (3 L). The organic layer was dried and concentrated to a residue
  • Nat ⁇ umcarbonat was dissolved in water (1 60 ml), added dimethylamine and cooled to 0 0 C.
  • the sodium diazonium salt was added slowly to the above prepared solution at 0-5 0 C and stirred for 1 hour.
  • the TLC was checked and the reaction was completed.
  • the pH of the reaction composition was adjusted to 3 with acetic acid and extracted with ethyl acetate (1.2 L).
  • the organic layer was washed with water (200 ml x 2), dried over anhydrous sodium sulfate and concentrated to a solid.
  • the product of preparation 2 has a melting point of 1 24 5 to 1 25, 8 ° C.
  • Example 1 Example 1 ;.
  • step 4 The product from step 4 was dissolved in DCM and cooled to 1 0 0 C. To the EDC HCl and HOBT were added and stirred for 30 minutes Methyiglycinat has been added at 1 0 0 C and stirred overnight at 27 0 C. The TLC was checked and the reaction was found to be complete. Water (1 L) was added and the layer separated. The organic layer was dried over sodium sulfate and concentrated to a residue.
  • Ron product was further purified by column chromatography (10% ethyl acetate in hexane),
  • Figure 1 shows the 1 H-NMR spectrum (400 MHz) of the compound of Example 1.
  • Figure 2 shows the 1 3 C-NMR spectrum (1 00 MHz) of the compound of Example 1,
  • the product is a yellow hygroscopic solid. In the mass spectrum, a major peak is observed at 399.1 (M + 1).
  • Figure 3 shows the 1 H-NMR spectrum (400 MHz) of the compound of Example 2,
  • Example 2 To 7 g of the compound obtained in Example 2 was added a solution of sodium carbonate (1.49 g, 0.01-40 mol) in water (3.75 mL). To this was added ethyl acetate (50 mL) and stirred. The precipitated product was stirred with tetrahydrofuran (1 00 mL) overnight (ca, 1 2 hours) at room temperature (25 ° C), the solid was filtered off and washed with dichloromethane (50 mL) and ethyl acetate (100 mL), the solid was dried in V ⁇ kkum at 50 0 C overnight (about 1 2 hours) and the sodium salt of the compound of Example? has been received
  • the product is a pale orange crystalline powder. It surprisingly has a very good water solubility of 500 g / L at room temperature (25 ° C.), which is in particular much higher than that of the compound of Example 4a), even though it has one more methylene group
  • Figure 4 shows the ⁇ NMR spectrum (400 MHz-D 2 O) of the compound obtained in Example 2a)
  • Figure 5 shows the 13 C-NMR spectrum (1 00 MHz - d 6 -DMSO) of the compound obtained in Example 2a)
  • FIG. 6 shows the result of HPLC of the compound obtained in Example 3 Example 4.
  • Figure 7 shows the ⁇ NMR spectrum (400 MHz -d 6 -DMSO) of the compound obtained in Example 4
  • Figure 8 shows the 13 C-NMR spectrum (1 00 MHz - d 6 -DMSO) of the compound obtained in Example 4
  • Figure 9 shows the 'H-NMR spectrum (400 MHz - D 2 O) of the compound obtained in Example 4a)
  • Figure 1 0 shows the 13 C-NMR spectrum p ⁇ MHz - d ° -DMSO) of the compound obtained in Example 4a)
  • FIG. 1 1 shows the result of HPLC of the compound obtained in Example 5
  • Example 2 Analogously to Example 1, the following compound was obtained starting from glycinamide as a light brown powder in a purity of> 95% (HPLC)
  • Figure 1 2 shows the result of HPLC of the compound obtained in Example 6 Example .7
  • thermocouple pocket and riorer were on an ice-water bath (3- ⁇ 4- ⁇ 4 - [(l E) -3,3-dimethyl-l -t ⁇ azenyl] - benzoyl ⁇ -phenoxy ⁇ prop ⁇ onsaure) (40g, 0.1 liter, 73 mol) as starting compound, HOBt (3, 7g, 0.0274 mol) and dioxane (300 mL).
  • the pH of the reaction mixture was adjusted to 6 8 using HCl (1.5 N ) are set and the reaction mixture was concentrated under reduced pressure at 50 0 C and concentrated the residue was added with water (20OmL) and stirred at 25 0 C the slurry was filtered and the pH of the filtrate was adjusted to 3 08 (using HCl 1 5N).
  • the reaction mixture was extracted with ethyl acetate (200mL) and the phases were separated.
  • the organic layer was dried over sodium sulfate (25g).
  • the organic layer was rinsed with dry ammonia for 2 hours (a gummy residue was formed) and the supernatant liquid became Decanted
  • the residue was spooled with a mixture of THF EtOAC (1 L, 10 mL) and decanted.
  • the compound is obtained as a pale orange powder having a melting point of 1 81 0 to 1 82 5 0 C.
  • Figure 1 3 shows the 'H-NMR spectrum of the compound obtained in Example 7
  • FIG. 4 shows the 13 C-NMR spectrum of the compound obtained in Example 7
  • Example 2a A 5 L three-neck round bottom flask equipped with a thermocouple and a stirrer was placed on an ice-water bath. To this was added the compound of Example 2a) (200 g, 0.476 mol) and water (2.0 L). The reaction mixture was stirred until a clear solution was obtained. and the pH of the solution was adjusted to 35 using 1.5N HCl. Dananch was added to ethyl acetate (2.0 L). The reaction mixture was allowed to stand for 30 minutes Washed water (1.0 L) was added to the organic layer (ie, the ethyl acetate layer).
  • the reaction was concentrated to dryness in vacuo at a temperature of less than 50 0 C to ethyl acetate (1, 0 L ) And water (1 0 L) and the layers were separated, washing water (1 0 L) was added to the organic layer, the organic layer (about Nat ⁇ umsulfat 1 00 g) and dried in vacuo at 5O 0 C concentrated isopropanol (800 mL) was added to the residue (80 g) and heated to 80 ° C to give a clear solution. The solution was gradually cooled to 25 ° C. The product was filtered off and washed with isopropanol (50 mL) dried at 5O 0 C for 1 2 hours in VTD yield 56 g (29.6% of theory)
  • the compound was obtained as a yellow to orange solid having a melting point of from 1 45.2 to 147.0 ° C.
  • the dissociation in DMSO at room temperature was 833 g / L
  • Figure 1 6 shows the 1 3 C-NMR spectrum of that obtained in Example 8.
  • the crude product was dissolved in methanol (150 ml) and to this was added methyl tert-butyl ether (MTBE, 1500 ml) slowly over a period of 30 minutes.
  • MTBE methyl tert-butyl ether
  • the precipitated solids were filtered and treated with MTBE (100 ml).
  • the product was washed in a vacuum dryer tub (vaccum tray dryer - VTD) for 1 2 hours at 50 0 C dried and then analyzed
  • the product was obtained as an orange powder.
  • the dissociation in water at room temperature was 666 g / L.
  • Figure 1 7 shows the 'H-NMR spectrum of that obtained in Example 9
  • Figure 1 8 shows the 13 C-NMR spectrum of that obtained in Example 9
  • test compounds as natural strains
  • Klucel hydroxypropylcellulose
  • the test compounds were dissolved in a saline solution and 5% Klucel (hydroxypropylcellulose) was added to dissolve all test compounds in the same carrier.
  • the compounds were administered in equimolar doses equivalent to 350 mg / kg of the comparative composition (according to Example 30 of DE 1 7931 1 5A) by intraperitoneal injection. This dose level was selected according to a dose of the comparator which resulted in a 50% reduction in tumor volume development under the experimental conditions.
  • a volume of 10 ml / kg body weight was injected animals receiving only the carrier , served as control
  • the test compounds were treated according to the schedule of a weekly twice administration over a period of 5 weeks
  • the tumor volume and the body weight were checked twice a week, and the relative tumor volumes were calculated as ratio tumor size vs body weight
  • the experiment was terminated when the tumor volume of the control group reached a level which required dead of the animals to comply with the animal welfare regulations
  • T / C values were used as an index of antitumour activity (The T / C index here represents the ratio of tumor size of treated and untreated animals. The smaller the ratio, the better the activity. 100% would be no activity Tumor of the same size)
  • the substances of Examples 2 and 4 have improved antitumor activity under the experimental conditions. Significant tumor remission was observed within 4 weeks of treatment with the two derivatives. Furthermore, the compositions were well tolerated Compared to the control group, animals treated in the substance treated animals over the experimental period no death trap
  • Figure 20 shows a comparison of the antitumor activity of the N ⁇ t ⁇ ums ⁇ lzes (Ex 4 ⁇ ) and the TRIS S ⁇ lzes the compound of Bsp 4 in the MAXF 401 Xenogr ⁇ ft model in the N ⁇ cktm ⁇ us
  • the subcutaneous implantation of the tumor and the determination of the tumor volume was carried out as previously described
  • the above salts of Prufsubstanz were administered as wass ⁇ ge solution in the mentioned dosages twice weekly by ⁇ p injection over a period of 4 weeks in the figure, the time course of the antitumor effect of Prufsubstanz as T / C value is dose-dependent given with 400 mg / kg of the sodium salt Compound from Example 4, a T / C value of 1 2 was achieved after 4 weeks of therapy, after In the case of administration of 500 mg / kg of the salt, a complete remission was achieved within 3 weeks of treatment.
  • Figure 21 shows the selectivity of the anti-tumor activity of the substance of Example 2a (sodium salt) on various tumors.
  • Example 2a sodium salt
  • Xenograft Fumorpanel Xenografts of human tumors derived from the prostate, uterus, lung, pancreas, bladder, and head and neck cancers were implanted in nude mice, and as previously described, implantation and tumor volume determination were performed in groups of 5-8 animals
  • the test substance was administered as a sodium salt as an aqueous solution in the stated dosages twice a week by injection.
  • the dose-dependency of the antitumor effect and the different responses of different tumors are shown 0% Antitumor effect corresponds! In this case the growth of control tumors and 100% of the complete remission of tumors under therapy.
  • the antitumor effect of the test substance increased in the Order MEXF 462>> CXF 280 - MAXF 401> UXF 1 1 38 ⁇ MEXF 276 - PRXF 22RV1 ⁇ PRXF DU 1 45> LXFL 529 ⁇ HNXF536> BXF 1 21 8 - PAXF 1 657 ab
  • the results show a pronounced (ie remission inducing) and specific anti-tunneling activity of the test substance, particularly in tumor arenas comprising melanoma, breast cancer and colon carcinoma
  • Figure 22 shows the dose-dependency of the anti-tumor effect of the substance from Example 2a in breast tumors (MAXF 401 - xenograft in nude mice)
  • the antitumor activity of the substance from example 2a (sodium salt) in the MAXF-401 xenograft tumor model in the nude mouse was investigated.
  • the subcutaneous implantation of the tumor and the determination of tumor volume were carried out as described above.
  • the test substance was twice as sodium salt as aqueous solution in the mentioned doses administered weekly by injection over a period of 4 weeks
  • the figure shows the time course of the antitumor effect of the test substance as a dose-dependent T / C value.
  • a dose of 300 mg / kg was given as a threshold dose, 450 mg / kg as ED50 and 500 mg / kg determined as ED90 of antitumor administration In the highest dose, a remission of the tumors was observed under therapy.
  • the substance was well contracted in the dose range used
  • Figure 23 shows the anti-tumor effect of the substance of Example 2a (sodium salt) in a colon carcinoma xenograft model
  • the antitumor activity of the substance of Example 2a in CXF280 xenograft tumor model in the nude mouse was determined The subcutaneous implantation of the tumor and the determination of tumor volume was carried out as previously described
  • the Prufsubstanz was as sodium salt as wass ⁇ ge solution in the dosages mentioned twice weekly Injection over a period of 4 weeks administered Groups of 8 animals were used After administration in doses of 450 500 or 540 mg / kg Example 2a was observed in all dosages used a pronounced antitumor effect with a complete inhibition ED20, ED50 and ED90 Doses were extrapolated to 330, 390 and 490 mg / kg of active substance The substance was well tolerated in the dose range used and with no significant weight loss connected to the animals
  • Table 3 shows the comparison of the anti-tumor effect of two further selected compounds, which are referred to below as the compound of Example 6 and compound of Example 7, compared to compound ⁇ n Bsp 2a in a melanoma xenograft model
  • the antitumor activity of the compounds was determined in the MEXF 462 xenograft tumor model in the nude mouse.
  • the subcutaneous implantation of the tumor and the determination of tumor volumes were carried out as previously described. Groups of 8 animals each were used
  • test substance according to Ex 7 and Ex 2 were administered as aqueous solution in equimolar doses twice a week by injection over a period of 4 weeks.
  • Aquimolar amounts of the compound from Ex 8 was administered as 5% DMSO solution ⁇ p twice weekly over the above period
  • the control group was terminated after day 1 1 for ethical reasons due to the high tumor volume.
  • partial remission with the compound of Exa 2a, complete remission on treatment with the compound of Ex 7, and severe retardation of tumor growth with treatment with the compound of Ex 8 were observed when treated with equimolar doses. All substances were found to be well tolerated in the dose range used, and significant weight gain was observed in all animals on therapy.
  • the compounds of the invention or the pharmaceutical compositions thereof are shown to be potent antitumor drugs with an improved therapeutic range and fewer side effects.
  • Example 2 Nephrological Compatibility
  • Tumortr ⁇ gende mice were treated with the comparison compound from Example 30 of DE 1 7931 1 5A or with the novel derivative of Example 2a at an equimolar dose level corresponding to 450 mg of parent composition by iP-injekf ⁇ on as described above.
  • a control group was only with the wearer after a twice treated weekly treatment regimen
  • mice After completion of the 28-day treatment period, the mice were autopsied. In the animals treated with the stock composition, macroscopic changes (swelling, local discoloration) of the kidneys were observed, while the kidneys of the other treatment group receiving the substance of Example 2a and the Control group without pathological findings remained The kidneys of all animals of the experimental groups were surgically removed, fixed in the mold using standard methods, embedded in paraffin and processed for HE staining The histological results of the tissue slices of the experimental groups are summarized in Table 4

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