Patent Application
20150313911
The present invention relates to new indolizine compounds, to a process for their preparation and to pharmaceutical compositions containing them.
The compounds of the present invention are new and have very valuable pharmacological characteristics in the field of apoptosis and cancerology.
Apoptosis, or programmed cell death, is a physiological process that is crucial for embryonic development and maintenance of tissue homeostasis.
Apoptotic-type cell death involves morphological changes such as condensation of the nucleus, DNA fragmentation and also biochemical phenomena such as the activation of caspases which cause damage to key structural components of the cell, so inducing its disassembly and death. Regulation of the process of apoptosis is complex and involves the activation or repression of several intracellular signalling pathways (Cory S. et al., Nature Review Cancer, 2002, 2, 647-656).
Deregulation of apoptosis is involved in certain pathologies. Increased apoptosis is associated with neurodegenerative diseases such as Parkinson's disease, Alzheimer's disease and ischaemia. Conversely, deficits in the implementation of apoptosis play a significant role in the development of cancers and their chemoresistance, in auto-immune diseases, inflammatory diseases and viral infections. Accordingly, absence of apoptosis is one of the phenotypic signatures of cancer (Hanahan D. et al., Cell 2000, 100, 57-70).
The anti-apoptotic proteins of the Bcl-2 family are associated with numerous pathologies. The involvement of proteins of the Bcl-2 family is described in numerous types of cancer, such as colon cancer, breast cancer, small-cell lung cancer, non-small-cell lung cancer, bladder cancer, ovarian cancer, prostate cancer, chronic lymphoid leukaemia, follicular lymphoma, myeloma, prostate cancer, etc. Overexpression of the anti-apoptotic proteins of the Bcl-2 family is involved in tumorigenesis, in resistance to chemotherapy and in the clinical prognosis of patients affected by cancer. There is, therefore, a therapeutic need for compounds that inhibit the anti-apoptotic activity of the proteins of the Bcl-2 family.
In addition to being new, the compounds of the present invention have pro-apoptotic properties making it possible to use them in pathologies involving a defect in apoptosis, such as, for example, in the treatment of cancer and of immune and auto-immune diseases.
The present invention relates more especially to compounds of formula (I):
wherein:
defined hereinbefore to be substituted by a group selected from linear or branched (C1-C6)alkyl, hydroxy, NR1′R1″ and halogen, it being understood that R1′ and R1″ have the same definitions than the groups R′ and R″ mentioned hereinbefore,
to their enantiomers and diastereoisomers, and to addition salts thereof with a pharmaceutically acceptable acid or base.
Among the pharmaceutically acceptable acids there may be mentioned, without implying any limitation, hydrochloric acid, hydrobromic acid, sulphuric acid, phosphonic acid, acetic acid, trifluoroacetic acid, lactic acid, pyruvic acid, malonic acid, succinic acid, glutaric acid, fumaric acid, tartaric acid, maleic acid, citric acid, ascorbic acid, oxalic acid, methanesulphonic acid, camphoric acid etc.
Among the pharmaceutically acceptable bases there may be mentioned, without implying any limitation, sodium hydroxide, potassium hydroxide, triethylamine, tert-butylamine etc.
The group:
advantageously represents one of the following groups: 5,6,7,8-tetrahydroindolizine optionally substituted by a hydroxy, indolizine, 1,2,3,4-tetrahydropyrrolo[1,2-a]pyrazine, tert-butyl 3,4-dihydropyrrolo[1,2-a]pyrazine-2(1H)-carboxylate, 3,4-dihydro-1H-pyrrolo[2,1-c][1,4]oxazine, 2,3-dihydro-1H-pyrrolizine optionally substituted by a hydroxy, 6,7,8,9-tetrahydro-5H-pyrrolo[1,2-a]azepine or pyrrolo[1,2-a]pyrazine.
In the preferred compounds of the invention, R1 and R2 each represents an alkyl group optionally substituted by a methoxy, or R1 and R2 form with the nitrogen atom carrying them a heterocycloalkyl selected from the following groups: morpholine optionally substituted by one or more linear or branched (C1-C6)alkyl(s), oxidomorpholine, thiomorpholine 1,1-dioxide, 1,4-oxazepan, 3-methoxypyrrolidine, 3,3-difluoropyrrolidine, 3-methoxyazetidine, 3-fluoroazetidine, oxopiperazine or piperazine, the last two groups being substituted by a linear or branched (C1-C6)alkyl group, a linear or branched (C1-C6)-polyhaloalkyl group or a methylsulphonyl group.
Preferably, Ra and Rd each represents a hydrogen atom and (Rb,Rc) form together with the carbon atoms carrying them a 1,3-dioxolane group wherein one of the carbon atoms is optionally deuterated, a 1,4-dioxane group, a 1,4-dioxepane group, or Ra, Rc and Rd each represents a hydrogen atom and Rb represents a halogen, a methyl, a methoxy, an ethoxy, a trifluoromethyl or a trifluoromethoxy.
The preferred group R4 is a 4-hydroxyphenyl, 3-fluoro-4-hydroxyphenyl or 5-hydroxypyrimidine.
In the preferred compounds, R3 represents a group selected from phenyl, indole, indoline, 1,2,3,4-tetrahydroquinoline, 3,4-dihydro-2H-1,4-benzoxazine, indane, 1H-indazole, 1H-pyrrolo[2,3-b]pyridine, pyrimidine, cyclobutylmethyl, cyclopropylmethyl, 1H-pyrazole, pyridine, pyridazine, those groups optionally having one or more substituents selected from halogen, linear or branched (C1-C6)alkyl, cyano and linear or branched (C1-C6)-alkoxy.
The preferred compounds of the invention are listed below:
The invention relates also to a process for the preparation of compounds of formula (I), which process is characterised in that there is used as starting material the compound of formula (II):
wherein Ra, Rb, Rc and Rd are as defined for formula (I),
which compound of formula (II) is subjected to a Heck reaction, in an aqueous or organic medium, in the presence of a palladium catalyst, of a base, of a phosphine and of the compound of formula (III):
wherein the groups X, Y and Het are as defined for formula (I),
to obtain the compound of formula (IV):
wherein Ra, Rb, Rc, Rd, X, Y and Het are as defined for formula (I),
the aldehyde function of which compound of formula (IV) is oxidised to the carboxylic acid to form the compound of formula (V):
wherein Ra, Rb, Rc, Rd, X, Y and Het are as defined for formula (I),
which compound of formula (V) is then subjected to peptide coupling with a compound of formula (VI):
wherein R1, R2 and R5 are as defined for formula (I),
to yield the compound of formula (VII):
wherein Ra, Rb, Rc, Rd, R1, R2, R5, X, Y and Het are as defined for formula (I),
the ester function of which compound of formula (VII) is hydrolysed to yield the carboxylic acid or the corresponding carboxylate, which may be converted into an acid derivative such as acyl chloride or the corresponding anhydride before being coupled with an amine NHR3R4 wherein R3 and R4 have the same meanings as for formula (I), to yield the compound of formula (I),
which compound of formula (I) may be purified according to a conventional separation technique, which is converted, if desired, into its addition salts with a pharmaceutically acceptable acid or base and which is optionally separated into its isomers according to a conventional separation technique,
it being understood that at any moment considered appropriate during the course of the process described above, some groups (hydroxy, amino . . . ) of the starting reagents or of the synthesis intermediates can be protected and subsequently deprotected, as required by the synthesis,
More particularly, when one of the groups R3 or R4 of the amine NHR3R4 is substituted by a hydroxy function, the latter may be subjected beforehand to a protection reaction prior to coupling with the carboxylic acid formed from the compound of formula (VII), or with a corresponding acid derivative thereof, the resulting protected compound of formula (I) subsequently undergoes a deprotection reaction and is then optionally converted into one of its addition salts with a pharmaceutically acceptable acid or base.
The compounds of formulae (II), (III), (VI) and the amine NHR3R4 are either commercially available or can be obtained by the person skilled in the art using conventional chemical reactions described in the literature.
Pharmacological study of the compounds of the invention has shown that they have pro-apoptotic properties. The ability to reactivate the apoptotic process in cancerous cells is of major therapeutic interest in the treatment of cancers and of immune and auto-immune diseases.
More especially, the compounds according to the invention will be useful in the treatment of chemo- or radio-resistant cancers, and in malignant haemopathies and small-cell lung cancer.
Among the cancer treatments envisaged there may be mentioned, without implying any limitation, cancers of the bladder, brain, breast and uterus, chronic lymphoid leukaemias, cancer of the colon, oesophagus and liver, lymphoblastic leukaemias, follicular lymphomas, melanomas, malignant haemopathies, myelomas, ovarian cancer, non-small-cell lung cancer, prostate cancer and small-cell lung cancer.
The present invention relates also to pharmaceutical compositions comprising at least one compound of formula (I) in combination with one or more pharmaceutically acceptable excipients.
Among the pharmaceutical compositions according to the invention there may be mentioned more especially those that are suitable for oral, parenteral, nasal, per- or trans-cutaneous, rectal, perlingual, ocular or respiratory administration, especially tablets or drages, sublingual tablets, sachets, paquets, capsules, glossettes, lozenges, suppositories, creams, ointments, dermal gels, and drinkable or injectable ampoules.
The dosage varies according to the sex, age and weight of the patient, the administration route, the nature of the therapeutic indication, or of any associated treatments, and ranges from 0.01 mg to 1 g per 24 hours in one or more administrations.
Furthermore, the present invention relates also to the association of a compound of formula (I) with an anticancer agent selected from genotoxic agents, mitotic poisons, anti-metabolites, proteasome inhibitors, kinase inhibitors and antibodies, and also to pharmaceutical compositions comprising that type of association and their use in the manufacture of medicaments for use in the treatment of cancer.
The compounds of the invention may also be used in association with radiotherapy in the treatment of cancer.
The following Preparations and Examples illustrate the invention but do not limit it in any way.
To a solution of 40 g of a racemic mixture of 2-piperidinecarboxylic acid (0.310 mmol) in 300 mL of formic acid at 0° C. there are added dropwise 200 mL (2.15 mmol) of acetic anhydride. The whole is then stirred at ambient temperature overnight. The reaction mixture is then cooled to 0° C., hydrolysed by the addition of 250 mL of water and stirred for half an hour at 0° C. before being concentrated to dryness. The oil so obtained is taken up in 200 mL of methanol and then concentrated to dryness. The title product is obtained in the form of an oil with a yield of 98%. It is used directly, without further purification, for the following step.
1H-NMR: δ (400 MHz; dmso-d6; 300° K): 13.0 (m, 1H OH); 8.0-8.05 (2s, 1H aldehyde); 4.9-4.5 (2d, 1H α of N and COOH); 4.1-2.6 (m, 2H to α of N); 2.2-1.2 (m, 6H piperidine).
IR: ν: —OH: 2000-3000 cm−1 acid; ν: >C═O 1703 cm−1 broad band.
To a solution of 10 g of carboxylic acid obtained in Step A (63.6 mmol) in 65 mL of dichloroethane there are added in succession 13.4 g of tosyl chloride (70.4 mmol), 11.5 mL of methyl 2-chloroacrylate (113.5 mmol) and then, dropwise, 17.8 mL of N,N,N-triethylamine (127.2 mmol). The reaction mixture is then refluxed for 1.5 hours. It is then brought to ambient temperature, and then 5 mL of methyl 2-chloroacrylate (48.9 mmol) and, dropwise, 9 mL of N,N,N-triethylamine (64 mmol) are added. The whole is heated at reflux overnight.
The reaction mixture is subsequently diluted with methylene chloride, washed in succession with a 1N HCl solution, a saturated NaHCO3 solution and then a saturated NaCl solution until a neutral pH is obtained. The organic phase is then dried over MgSO4, filtered, concentrated to dryness, and purified by chromatography over silica gel (heptane/AcOEt gradient). The title product is obtained in the form of an oil.
1H-NMR: δ (400 MHz; CDCl3; 300° K): 6.55-6.40 (d, 2H, tetrahydroindolizine); 3.91 (t, 3H methyl ester); 3.78 (s, 3H tetrahydroindolizine); 3.08 (t, 2H, tetrahydroindolizine); 1.95-1.85 (m, 4H, tetrahydroindolizine)
IR: ν: >C═O 1692 cm−1 ester
To a solution of 6.4 g of the ester obtained in Step B (35.7 mmol) in 12 mL of N,N-dimethylacetamide there are added in succession 12.3 g of 6-bromo-1,3-benzodioxole-5-carbaldehyde (53.6 mmol) and 7 g of potassium acetate (71.4 mmol), and the whole is then stirred under argon for 20 minutes. 1.3 g of palladium catalyst PdCl2(PPh3)2 (1.8 mmol) are then added. The reaction mixture is subsequently heated at 130° C. for one hour before 139 μL of H2O are added thereto. Heating is maintained at that same temperature overnight. The mixture is allowed to return to ambient temperature and is then diluted with AcOEt. Animal charcoal is added (2 g per g of product) and the whole is stirred at ambient temperature for one hour and then filtered. The organic phase is then washed with water, dried over magnesium sulphate and concentrated to dryness. The crude product so obtained is purified on silica gel (heptane/AcOEt gradient). The title product is obtained in the form of an oil.
1H-NMR: δ: (400 MHz; dmso-d6; 353° K): 9.65 (s, 1H, H aldehyde); 7.3-7.15 (2s, 2H, H aromatic); 6.45 (s, 1H tetrahydroindolizine); 6.20 (s, 2H methylenedioxy); 3.70 (s, 3H methyl ester); 3.5-4.0 (m, 2H tetrahydroindolizine); 3.05 (m, 2H tetrahydroindolizine); 1.85 (m, 4H tetrahydroindolizine)
IR: ν: >C═O 1695 cm−1 ester; ν: >C═O 1674 cm−1
There is prepared a solution containing 3.37 g of the compound obtained in Step C (10.3 mmol) in 9.3 mL of acetone and 8.8 mL (80.24 mmol) of 2-methyl-2-butene, which solution is placed at 0° C. There are added, dropwise, 9.3 mL of an aqueous solution containing a mixture of 3.3 g of NaClO2 (36.05 mmol) and 3.6 g of Na2PO4 (25.75 mmol). The whole is subsequently stirred at ambient temperature for 7 hours. The reaction mixture is then concentrated in order to remove the acetone. The solid then obtained is filtered, washed with water and then dried in vacuo at 40° C. overnight. The title product is obtained in the form of a solid, which is used subsequently without being purified further.
1H-NMR: δ (400 MHz; dmso-d6; 300° K): 12.10 (m, 1H, H carboxylic acid); 7.40-6.88 (2s, 2H, H aromatic); 6.20 (s, 1H, H tetrahydroindolizine); 6.18 (s, 2H, H methylenedioxy); 3.70 (s, 3H, methyl ester); 3.55 (t, 2H tetrahydroindolizine); 3.00 (t, 2H tetrahydroindolizine); 1.80 (m, 4H, H tetrahydroindolizine)
IR: ν: —OH: 3000-2000 cm−1 acid; ν: >C═O 1686-1676 cm−1 ester+acid; ν: >C═C<1608 cm−1
The procedure is as in the process of Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 2,4-dibromobenzaldehyde. There is obtained a mixture of two regioisomers, which are separated by chromatography.
The procedure is as in the process of Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 2-bromo-4-chlorobenzaldehyde.
The procedure is as in the process of Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 2-bromo-4-fluorobenzaldehyde.
The procedure is as in the process of Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 8-bromo-3,4-dihydro-2H-1,5-benzodioxepine-7-carbaldehyde.
The procedure is as in the process of Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 2-bromo-4-methoxybenzaldehyde.
The procedure is as in the process of Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 7-bromo-2,3-dihydro-1,4-benzodioxine-6-carbaldehyde.
The procedure is as in the process of Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 2-bromo-4-ethoxybenzaldehyde.
To a solution of 30 g of 3,4-dihydroxybenzaldehyde (217 mmol) in 110 mL of anhydrous DMF there are added in succession 114 g of caesium carbonate (347 mmol) and 22 mL of dideuterated methylene chloride (347 mmol). The reaction mixture is subsequently stirred at ambient temperature overnight. After filtering off the insoluble portion over Celite, the residual filtrate is subsequently hydrolysed by addition of 200 mL of water and then extracted with ethyl acetate. The organic phases are then combined, washed with a saturated LiCl solution and then dried over MgSO4. After concentration to dryness, the residue is purified by chromatography over silica gel (petroleum ether/AcOEt gradient). The title product is obtained in the form of a solid.
1H-NMR: δ: (400 MHz; dmso-d6; 300° K): 9.8 (s, 1H, H aldehyde); 7.4-6.95 (m, 3H, H aromatic)
IR: ν: C═O aldehyde: 1670 cm−1
To a solution of 10 g of the compound obtained in Step A (65.7 mmol) in 100 mL of methanol cooled to 0° C. there are added dropwise 3.7 mL of a solution of bromine (1.1 molar equivalents) in 10 mL of methanol. The whole is subsequently stirred at ambient temperature overnight. The reaction mixture is concentrated to dryness and then taken up in water. After stirring, the resulting solid is subsequently filtered and then dried.
1H-NMR: δ (400 MHz; dmso-d6; 300° K): 10.2 (s, 1H, H aldehyde); 7.4 (s, 1H, H aromatic); 7.05 (s, 1H, H aromatic)
IR: ν: C═O aldehyde: 1670 cm−1; C═C aromatic: 1611 cm−1
The procedure is as in the protocol described in Steps C and D of Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 6-bromo-2,2-dideuterio-1,3-benzodioxole-5-carbaldehyde.
The procedure is as in the protocol described in Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 2-bromo-4-(trifluoromethyl)benzaldehyde.
The procedure is as in the protocol described in Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 2-bromo-4-(trifluoromethoxy)-benzaldehyde.
The procedure is as in the protocol described in Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 2-bromobenzaldehyde.
To a solution of 16.2 mL of pyridine (200 mmol) in 120 mL of ethyl acetate there are added in portions 27.8 g (200 mmol) of bromoacetic acid. The whole is subsequently stirred at ambient temperature overnight. The precipitate so obtained is filtered off and then washed with cold ethyl acetate. After drying, the title product is obtained in the form of a powder, which is used directly for the following step.
1H-NMR: δ (400 MHz; dmso-d6; 300° K): 9.15 (d, 2H, H aromatic pyridine)); 8.7 (t, 1H, H aromatic); 8.25 (t, 2H, H aromatic); 5.65 (s, 2H, H CH2COOH)
IR: ν: C═O: 1732 cm−1; —OH acid: 2800 cm−1
To a suspension of 6.55 g of the pyridinium salt obtained in Step A (30 mmol) in 240 mL of toluene there are added in succession 16.7 mL of methyl acrylate (150 mmol), 4.2 mL of triethylamine (30 mmol) and then, in portions, 20.9 g of MnO2 (240 mmol). The whole is subsequently heated at 90° C. for 3 hours. After cooling, the reaction mixture is filtered over a Celite cake and concentrated to dryness. The title product is then isolated by purification on silica gel (heptane/AcOEt gradient: 0-10%) in the form of an oil, which crystallises when cold.
1H-NMR: δ (300 MHz; dmso-d6; 300° K): 8.5 (d, 1H, H indolizine); 8.05 (d, 1H, H indolizine); 7.6 (s, 1H, H indolizine); 7.15 (m, 2H, H indolizine); 6.85 (m, 1H, H indolizine); 4.25 (q, 2H, —C(O)CH2CH3); 1.35 (t, 3H, —C(O)CH2CH3)
IR: ν: C═O ester: 1675 cm−1; C═C aromatic: 1634 cm−1
The procedure is as in the protocol described in Steps C and D of Preparation 1.
Methyl 1-indolizinecarboxylate is formed according to the process described in Steps A and B of Preparation 13. The title product is subsequently obtained according to the protocol described in Steps C and D of Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 2-bromo-4-chlorobenzaldehyde.
Methyl 1-indolizinecarboxylate is formed according to the process described in Steps A and B of Preparation 13. The title product is subsequently obtained according to the described in Steps C and D of Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 7-bromo-2,3-dihydro-1,4-benzodioxine-6-carbaldehyde.
Methyl 1-indolizinecarboxylate is formed according to the process described in Steps A and B of Preparation 13. The title product is subsequently obtained according to the protocol described in Steps C and D of Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 2-bromo-4-methoxybenzaldehyde.
To a solution of pentafluorophenol in 520 mL of anhydrous ether at 0° C. there are added in succession 49 g of 1-ethyl-3-(3′-dimethylaminopropyl)-carbodiimide (286 mmol) in portions and 12 mL of formic acid (312 mmol). The whole is stirred at ambient temperature for 2 hours. There is subsequently added a mixture of 32 g of 1-tert-butyl 3-methyl 1,3-piperazinedicarboxylate (130 mmol) and 18 mL of triethylamine (130 mmol) in solution in 520 mL of CH2Cl2. The whole is stirred overnight at ambient temperature. The reaction mixture is hydrolysed with an 1N aqueous HCl solution and extracted with CH2Cl2. The organic phases are subsequently combined and then washed with a saturated aqueous NaHCO3 solution and then with a saturated aqueous NaCl solution until neutral. After drying over MgSO4, filtration and concentration to dryness, the product is isolated by chromatography over silica gel (petroleum ether/AcOEt gradient: 0-30%). The title product is obtained in the form of an oil.
IR: ν: C═O: 1674-1745 cm−1
m/z (C12H20N2O5): 272.1 (M+); 295.121 (M+Na)+; 567.253 (2M+Na)+
To a solution of 28 g of the compound obtained in Step A (103 mmol) in 515 mL of dioxane there are added 4.8 g of LiOH (113 mmol) in solution in 100 mL of H2O. The whole is stirred at ambient temperature for 4 hours. The reaction mixture is subsequently concentrated to dryness and then co-evaporated several times with ethyl acetate. The title product is obtained in the form of a solid and is used directly for the following cyclisation step.
13C-NMR: δ (500 MHz; dmso-d6; 300° K): 46 (s, C piperazine); 42-38 (m, C piperazine); 58-53 (s, C piperazine); 28.5 (s, C tBu).
IR: ν: C═O: 1650 cm−1; 2800 cm−1
To a suspension of 29 g of the compound obtained in Step B (103 mmoles) in 800 mL of dichloroethane there are added in succession 24 g of tosyl chloride (124 mmol), 12.6 mL of methyl 2-chloroacrylate (124 mmol) and then 35 mL of triethylamine (247 mmoles). The whole is stirred at reflux for 2 hours. After cooling, the reaction mixture is diluted with ethyl acetate, and the organic phase is washed with a saturated NaCl solution until neutral. After drying over MgSO4, filtration and concentration to dryness, the title product is isolated by chromatography over silica gel (petroleum ether/AcOEt gradient: 0-20%) in the form of a solid.
1H-NMR: δ (400 MHz; dmso-d6; 300° K): 6.8-6.43 (m, 2H, H pyrrole); 4.75-3.75 (m, 6H, H piperazine)); 3.73 (s, 3H, H COOCH3); 1.48 (s, 9H, H tBu).
IR: ν: C═O (conjugated ester): 1712 cm−1; C═O (carbamate): 1677 cm−1
The procedure is as in the protocol described in Steps C and D of Preparation 1.
The procedure is as in the protocol described in Preparation 1, replacing the 2-piperidinecarboxylic acid used in Step A by proline.
The procedure is as in the protocol described in Preparation 1, replacing the 2-piperidinecarboxylic acid used in Step A by proline, while the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C is replaced by 2-bromo-4-chlorobenzaldehyde.
The procedure is as in the protocol described in Preparation 1, replacing 2-piperidinecarboxylic acid by 3-morpholinecarboxylic acid, while the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C is replaced by 2-bromo-4-chlorobenzaldehyde.
The procedure is as in the protocol described in Preparation 1, replacing 2-piperidinecarboxylic acid by 3-morpholinecarboxylic acid.
The procedure is as in the protocol described in Preparation 1, replacing 2-piperidinecarboxylic acid by 2-azepanecarboxylic acid, while the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C is replaced by 2-bromo-4-chlorobenzaldehyde.
The procedure is as in the protocol described in Preparation 1, replacing 2-piperidinecarboxylic acid by 2-azepanecarboxylic acid.
To a suspension of 6.7 g (241.7 mmol) of NaH (60%) in 400 mL of anhydrous THF at 0° C. there are added 20 g (161.13 mmol) of methyl 1H-pyrrole-2-carboxylate (see Tetrahedron 2008, 64, 7745). The whole is subsequently stirred at ambient temperature for one hour. Then, there are added 95 mL of 1,4-dibromobutane. After the addition, the reaction mixture is heated at reflux for 12 hours. The precipitate obtained is filtered off and then washed with THF. The filtrate is subsequently concentrated to dryness. The compound is then isolated by chromatography over silica gel (cyclohexane/ethyl acetate gradient: 0 to 20%) in the form of an oil.
IR: ν: —C═O: 1700 cm−1; ν: C—O—C: 1238 cm−1
A solution of 8 g (30.8 mmol) of the brominated derivative obtained in Step A in 700 mL of acetonitrile is brought to reflux. There is added thereto a solution of a mixture of 25 g of azobisisobutyronitrile (151 mmol) and of 30 g of Bu3SnH (100 mmol) in 500 mL of toluene. The whole is refluxed for 120 hours. The reaction mixture is subsequently concentrated to dryness. The compound is then isolated by chromatography over silica gel (cyclohexane/ethyl acetate gradient 5 to 10%) in the form of an oil.
1H-NMR: δ (400 MHz; CDCl3; 300° K): 6.90 (d, 1H, H pyrrole); 5.85 (d, 1H, H pyrrole); 4.30 (t, 2H, CH2 indolizine); 3.80 (s 3H, Me); 2.80 (t, 2H, CH2 indolizine); 1.95 (m, 2H, CH2 indolizine); 1.80 (m, 2H, CH2 indolizine)
IR: ν: —C═O: 1695 cm−1
The procedure is as in the protocol described in Steps C and D of Preparation 1.
The procedure is as in the process of Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 2-bromo-4-methylbenzaldehyde.
The procedure is as in the protocol described in Preparation 1, replacing 2-piperidinecarboxylic acid by 3-morpholinecarboxylic acid, while the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C is replaced by 2-bromo-4-fluorobenzaldehyde.
24 g of methyl 1,4-dioxa-8-azaspiro[4.5]decane-9-carboxylate (111 mmol) are dissolved in 80 mL of ethyl acetate and 80 mL of dichloromethane. There are added 26 g of (4-nitrophenyl) formate (155 mmol), and the whole is stirred at ambient temperature for one hour. The reaction mixture is evaporated to dryness and taken up in ethyl acetate. The organic phase is subsequently washed in succession with a 1 N NaOH solution, water, and then with a saturated NH4Cl solution until a neutral pH is reached. It is subsequently dried over magnesium sulphate, filtered and concentrated to dryness. The oil so obtained is purified by flash chromatography (heptane/ethyl acetate gradient). The title product is obtained in the form of an oil.
1H-NMR: δ (400 MHz; dmso-d6; 300° K): 8.15 (s, 1H, CHO); 5.0-4.75 (m, 1H, H tertiary); 4.3-3.7 (m, 5H, 4H ethylenedioxy+1H aliphatic piperidine); 3.70 (s, 3H, Me); 3.4-2.9 (2m, 1H, H aliphatic piperidine); 2.3-1.75 (m, 2H, H aliphatic piperidine); 1.7-1.5 (m, 2H, H aliphatic piperidine)
15.25 g of the compound obtained in Step A (62.7 mmol) are dissolved in 160 ml of dioxane. A solution of 125 mL of 1M KOH is added dropwise, and the whole is stirred at ambient temperature for one hour. There are subsequently added 125 mL of 1M HCl, and the compound is extracted with dichloromethane. The organic phase is dried over MgSO4, filtered and concentrated to dryness. The title product is obtained in the form of a powder.
1H-NMR: δ (400 MHz; dmso-d6; 300° K) 13.5-12 (m, 1H, OH); 8.1+8.0 (2s, 1H, CHO); 4.9+4.6 (2m, 1H, H tertiary); 4.0-3.8 (m, 4H, ethylenedioxy); 4.2+3.7 (2 ms, 1H, H aliphatic piperidine); 3.4+2.9 (2m, 1H, H aliphatic piperidine); 2.4-1.5 (m, 4H, H aliphatic piperidine)
IR: ν: OH: 3500-2000 cm−1; —C═O (acid+aldehyde): 1731+1655 cm−1
To a solution of 13.5 g (62.7 mmol) of the acid obtained in Step B in 380 mL of dichloroethane there are added in succession 39.5 mL (238.4 mmol) of triethylamine and then, by spatula, 12.5 g (65.6 mmol) of para-toluenesulphonyl chloride and 23.7 mL (238.4 mmol) of methyl chloroacrylate. The whole is stirred at 80° C. for 18 hours. The reaction mixture is subsequently filtered over Celite. The filtrate is subsequently washed with a saturated NaHCO3 solution and then with a saturated NH4Cl solution. The organic phase is dried over MgSO4, filtered and concentrated to dryness. The oil so obtained is purified by flash chromatography (heptane/ethyl acetate gradient). The product is obtained in the form of a solid.
1H-NMR: δ (400 MHz; dmso-d6; 300° K) 6.70 (d, 1H, pyrrole); 6.40 (d, 1H, pyrrole); 4.05 (t, 2H, H aliphatic, piperidine); 4.00 (m, 4H, ethylenedioxy); 3.70 (s, 3H, methyl); 3.15 (s, 2H, H aliphatic piperidine); 2.05 (t, 2H, H aliphatic piperidine)
IR: ν: —C═O (ester): 1689 cm−1
The procedure is as in the process of Step C of Preparation 1, replacing 6-bromo-1,3-benzodioxole-5-carbaldehyde by 2-bromo-4-fluorobenzaldehyde.
The procedure is as in the process of Step D of Preparation 1.
The protection of the alcohol function of methyl(4R)-4-hydroxy-L-prolinate by a tert-butyldimethylsilyl group is carried out according to the protocol described in document
13.7 g (52.8 mmol) of compound of Step A are dissolved in 100 mL of acetonitrile. There are added thereto 13.2 g (79.3 mmol) of (4-nitrophenyl) formate and 39 mL (238 mmol) of diisopropylethylamine. The whole is stirred at ambient temperature for 6 hours. The reaction mixture is evaporated to dryness and taken up in ethyl acetate. The organic phase is subsequently washed in succession with a 1 N NaOH solution, with water, and then with a saturated NH4Cl solution until neutral. It is subsequently dried over magnesium sulphate, filtered and concentrated to dryness. The oil so obtained is purified by flash chromatography (gradient: dichloromethane/ammoniacal methanol). The title product is obtained in the form of an oil.
1H-NMR: δ (400 MHz; dmso-d6; 300° K): 8.15 and 8.12 (s, 1H, formyl); 4.62 and 4.25 (t, 1H, H alpha ester); 4.40 (m, 1H, SiOCH,); 3.65 and 3.6 (s, 3H, OMe); 3.5 and 3.3 (m, 2H, 2H proline); 2.12 and 1.95 (m, 2H, 2H proline); 0.8 (s, 9H, SitBu); 0.05 (s, 6H, SiMe2).
IR: ν: C═O ester: 1749 cm−1; C═O formyl: 1659 cm−1
The compound of Step B (26.2 g; 91.1 mmol) is dissolved in 450 mL of dioxane. A solution of lithium hydroxide (4.2 g; 100 mmol) in water (90 mL) is added. The whole is stirred at ambient temperature for 7 hours. The reaction mixture is evaporated to dryness and used as such for the following step.
To a solution of 22.4 g (80.2 mmol) of the lithium carboxylate obtained in Step D in 640 mL of dichloroethane there are added in succession 27 mL (192 mmol) of triethylamine and then, in portions, 18 g (96 mmol) of para-toluenesulphonic chloride and 9.7 mL (96.2 mmol) of methyl chloroacrylate. The reaction mixture is heated at reflux for 18 hours and then cooled and diluted in ethyl acetate. The organic phase is washed with water and then with brine, before being dried over MgSO4. After filtration and concentration of the mixture, the oil obtained is purified by flash chromatography (gradient: heptane/ethyl acetate). The title product is obtained in the form of an oil.
1H-NMR: δ (400 MHz; dmso-d6; 300° K): 6.7 (d, 1H, H pyrrole); 6.4 (d, 1H, H pyrrole); 5.0 (m, 1H, SiOCH,); 4.2-3.75 (ABx, 2H, 2H dihydropyrrolizine); 3.3+2.8 (ABx, 2H, 2H dihydropyrrolizine); 3.70 (s, 3H, CO2CH3); 0.9 (s, 9H, tBu); 0.10 (ABx, 6H, SiMe2)
IR: ν: —C═O (ester): 1701 cm−1; SiCH3: 1249 cm−1; Si—O: 1118-1090 cm−1; Si—C: 835-777 cm−1
The procedure is as in the process of Step C of Preparation 1, replacing 6-bromo-1,3-benzodioxole-5-carbaldehyde by 2-bromo-4-fluorobenzaldehyde.
The procedure is as in the process of Step D of Preparation 1.
The procedure is as in the process of Preparation 28, replacing the methyl(4R)-4-hydroxy-L-prolinate used in Step A by methyl(4S)-4-hydroxy-L-prolinate.
The procedure is as in the process of Preparation 27, replacing the 2-bromo-4-fluorobenzaldehyde used in Step D by 6-bromo-1,3-benzodioxole-5-carbaldehyde.
To a solution of 10 g (65.7 mmol) of methyl pyrazin-2-ylacetate in 263 mL of anhydrous acetone (4 mL/mmol) there are added in succession 5.7 g of lithium bromide (65.7 mmol), 22.1 g of sodium bicarbonate (263 mmol) and then 9.4 mL of chloroacetaldehyde (50% solution in water) (72.6 mmoles). The whole is subsequently heated at reflux overnight. The reaction mixture is subsequently concentrated to dryness and then taken up in ethyl acetate. The organic phase is washed with a saturated sodium chloride solution, dried over magnesium sulphate, filtered and then concentrated to dryness. There is obtained an oil, which is purified by chromatography over silica gel (CH2Cl2/ethyl acetate gradient). After concentration, the title product is obtained in the form of a solid.
1H-NMR: δ (400 MHz; dmso-d6; 300° K): 9.36 (m, 1H, H pyrazine); 8.50 (dd, 1H, H pyrazine)); 7.8 (m, 2H, 1H pyrazine, 1H pyrrole); 7.31 (m, 1H, H pyrrole). 3.88 (s, 3H, OCH3)
IR: ν: —C═O (conjugated ester): 1686 cm−1
The procedure is as in the processes of Steps C and D of Preparation 1.
Methyl 1-indolizinecarboxylate is formed according to the process described in Steps A and B of Preparation 13. The title product is subsequently obtained according to the protocol described in Steps C and D of Preparation 1, replacing the 6-bromo-1,3-benzodioxole-5-carbaldehyde used in Step C by 2-bromo-4-fluorobenzaldehyde.
To a solution of 5 g of (3S)-2-[(benzyloxy)carbonyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid (16 mmol) in 160 mL of dichloromethane there are added 1.5 mL of morpholine (17.6 mmol) and then 9 mL of N,N,N-triethylamine (64 mmol), 3.3 g of 1-ethyl-3-(3′-dimethylaminopropyl)-carbodiimide (EDC) (19.2 mmol) and 2.6 g of hydroxybenzotriazole (HOBT) (19.2 mmol). The reaction mixture is stirred at ambient temperature overnight and is then poured onto a solution of ammonium chloride and extracted with ethyl acetate. The organic phase is subsequently dried over magnesium sulphate and then filtered and evaporated to dryness. The crude product so obtained is then purified by chromatography over silica gel (dichloromethane/methanol gradient). The product is obtained in the form of a foam.
1H-NMR: δ (400 MHz; dmso-d6; 353° K): 7.30 (m, 5H benzyl); 7.15 (m, 4H aromatic); 5.2-5.0 (m, 3H, 2H benzyl, 1H dihydroisoquinoline); 4.75-4.5 (2d, 2H dihydroisoquinoline); 3.55-3.3 (m, 8H morpholine); 3.15-2.9 (2dd, 2H dihydroisoquinoline)
IR: ν: >C═O: 1694; 1650 cm−1
To a solution of 5.3 g of the product obtained in Step A (13.9 mmol) in 278 mL of tetrahydrofuran there are added 14 mL of BH3Me2S (27.8 mmol) at ambient temperature. The whole is heated for 4 hours at 80° C. It is allowed to return to ambient temperature, and then there are added 7 mL (14 mmol) of BH3Me2S. The reaction mixture is again heated at 80° C. for 2 hours. The tetrahydrofuran is subsequently evaporated off, and there are then added slowly methanol and then 5.6 mL of 5N hydrochloric acid (27.8 mmol). The mixture is stirred at ambient temperature overnight and then at 80° C. for one hour. There is subsequently added a saturated NaHCO3 solution to the reaction mixture at 0° C. until a pH of 8 is reached, and then extraction with ethyl acetate is carried out. The organic phase is subsequently dried over magnesium sulphate and then filtered and evaporated to dryness. The title product is obtained in the form of an oil.
1H-NMR: δ (400 MHz; dmso-d6; 353° K): 7.43-7.30 (unresolved peak, 5H benzyl); 7.19 (m, 4H aromatic); 5.16 (m, 2H, 2H benzyl); 4.79-4.29 (d, 2H dihydroisoquinoline); 4.58 (m, 1H dihydroisoquinoline); 3.50 (m, 4H morpholine); 3.02-2.80 (dd, 2H dihydroisoquinoline); 2.42-2.28 (unresolved peak, 5H, 4H morpholine, 1H morpholine); 2.15 (dd, 1H morpholine)
IR: ν: >CH: 2810 cm−1; ν: >C═O: 1694 cm−1; ν: >C—O—C<: 1114 cm−1; ν: >CH—Ar: 751; 697 cm−1
To a solution of 4.9 g of the compound of Step B (13.4 mmol) in 67 mL of ethanol there is added 0.980 g of palladium dihydroxide (20% by mass) at ambient temperature. The reaction mixture is placed under 1.2 bar of hydrogen at ambient temperature for 4 hours. It is subsequently passed over a Whatman filter, and then the palladium is rinsed several times with ethanol. The filtrate is evaporated to dryness. The title product is obtained in the form of an oil.
1H-NMR: δ (400 MHz; dmso-d6; 300° K): 7.12-7.0 (unresolved peak, 4H aromatic); 3.92 (s, 2H tetrahydroisoquinoline); 3.60 (t, 4H morpholine); 2.98 (m, 1H tetrahydroisoquinoline); 2.68 (dd, 1H tetrahydroisoquinoline); 2.5-2.3 (unresolved peak, 8H, 1H tetrahydroisoquinoline, 6H morpholine, 1H NH)
IR: ν: >NH: 3322 cm−1; ν: >C—O—C<: 1115 cm−1; ν: >CH—Ar: 742 cm−1
The procedure is as in the process of Preparation 1′, replacing the (3S)-2-[(benzyloxy)carbonyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid used in Step A by (3R)-2-[(benzyloxy)carbonyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by 1-methyl-piperazine.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by 1,4-oxazepan.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by (3R)-3-methylmorpholine.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by (3S)-3-methylmorpholine.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by (3S,5S)-3,5-dimethylmorpholine.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by N,N-dimethylamine.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by 1-(2-methoxyethyl)piperazine.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by 1-methylpiperazin-2-one.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by 2-methoxy-N-methylethanamine.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by N-ethyl-2-methoxyethanamine.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by 1-(methylsulphonyl)piperazine.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by 1-(2,2,2-trifluoroethyl)piperazine.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by thiomorpholine 1,1-dioxide.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by 3-methoxypyrrolidine.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by 3,3-difluoropyrrolidine.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by 3-methoxyazetidine.
The procedure is as in the process of Preparation 1′, replacing the morpholine used in Step A by 3-fluoroazetidine.
To a solution of 12 g of 4-anilinophenol (64.7 mmol) in 200 mL of acetonitrile there are added at ambient temperature 6.7 g of imidazole (97.05 mmol) and 11.7 g of tert-butyl(chloro)dimethylsilane (77.64 mmol). The whole is stirred at 70° C. for 4 hours. Then the reaction mixture is poured onto water and extracted with ether. The organic phase is subsequently dried over magnesium sulphate and then filtered and evaporated to dryness. The crude product so obtained is then purified by chromatography over silica gel (petroleum ether/dichloromethane gradient). The title product is obtained in the form of a powder.
1H-NMR: δ (400 MHz; dmso-d6; 300° K): 7.84 (s, 1H NH); 7.17 (t, 2H aniline); 6.98 (d, 2H phenoxy); 6.94 (d, 2H aniline); 6.76 (d, 2H phenoxy); 6.72 (t, 1H aniline); 0.95 (s, 9H tert-butyl); 0.15 (s, 6H dimethyl)
IR: ν: >NH: 3403 cm−1; >Ar: 1597 cm−1
The amines NHR3R4 wherein R3 and R4 independently of one another represent an aryl or heteroaryl group are prepared according to known procedures described in the literature (Surry D. S et al., Chemical Science, 2011, 2, 27-50, Charles M. D. et al., Organic Letters, 2005, 7, 3965-3968). The reaction of protection of the hydroxy function of the 4-anilinophenol described in Preparation 1″ can be applied to various secondary amines NHR3R4 (as defined hereinbefore) having one or more hydroxy functions, when they are available commercially. Alternatively, the secondary amines having at least one hydroxy substituent may be synthesised directly in a protected form, i.e. starting from reagents whose hydroxy function has been protected beforehand. Among the protecting groups, tert-butylsilyloxy and benzyloxy are especially preferred.
Among the amines NHR3R4 having a hydroxy substituent that are used for synthesising the compounds of the invention there may be mentioned: 4-(4-toluidino)phenol, 4-(4-chloroanilino)phenol, 4-(3-fluoro-4-methylanilino)phenol, 4-[4-(trifluoromethoxy)anilino]-phenol, 4-[4-hydroxyanilino]phenol, {4-[(1-methyl-1H-indol-6-yl)amino]phenyl}-methanol, 4-(2,3-dihydro-1H-indol-6-ylamino)phenol, 4-[(1-methyl-2,3-dihydro-1H-indol-6-yl)amino]phenol, 4-[(1-methyl-1H-indol-6-yl)amino]phenol, 4-[(1-methyl-1H-indol-6-yl)amino]cyclohexanol, 4-[(1-methyl-1,2,3,4-tetrahydro-6-quinolinyl)amino]phenol, 4-[(4-methyl-3,4-dihydro-2H-1,4-benzoxazin-7-yl)amino]phenol, 4-[4-(diethylamino)anilino]-phenol, 4-(2,3-dihydro-1H-inden-5-ylamino)phenol, 4-[(1-methyl-1H-indazol-5-yl)amino]-phenol, 4-[(1′-methyl-1′,2′-dihydrospiro[cyclopropane-1,3′-indol]-5′-yl)amino]phenol, 4-[(1,3,3-trimethyl-2,3-dihydro-1H-indol-5-yl)amino]phenol, 4-[4-methoxy-3-(trifluoro-methyl)anilino]phenol, 4-[4-(methylsulphanyl)-3-(trifluoromethyl)anilino]phenol, 2-fluoro-4-[(1-methyl-1H-indol-5-yl)amino]phenol, 4-[(1-ethyl-1H-indol-5-yl)amino]phenol, 4-[(1-ethyl-2,3-dihydro-1H-indol-5-yl)amino]phenol, 4-[(1-isopropyl-2,3-dihydro-1H-indol-5-yl)amino]phenol, 4-(butylamino)phenol, 3-[(1-methyl-1H-indol-5-yl)amino]-1-propanol, 4-[(1-methyl-1H-indol-5-yl)amino]-1-butanol, 4-[(3-fluoro-4-methylphenyl)-amino]phenol, 4-[(3-chloro-4-methylphenyl)amino]phenol, 4-[(4-fluorophenyl)amino]-phenol, 4-[(1-methyl-1H-pyrrolo[2,3-b]pyridin-5-yl)amino]phenol, 4-[(4-fluorophenyl)-amino]phenol, 4-[(2-fluorophenyl)amino]phenol, 4-[(3-fluorophenyl)amino]phenol, 4-[(2,4-difluorophenyl)amino]phenol, 4-[(3,4-difluorophenyl)amino]phenol, 3-[(4-hydroxyphenyl)amino]benzonitrile, 4-[(3-methoxyphenyl)amino]phenol, 4-[(3,5-difluorophenyl)-amino]phenol, 4-[(3-methylphenyl)amino]phenol, 4-[(4-hydroxyphenyl)amino]benzonitrile, 4-[(3-chlorophenyl)amino]phenol, 4-(pyrimidin-2-ylamino)phenol, 4-[(cyclobutylmethyl)amino]phenol, 2-[(4-hydroxyphenyl)amino]benzonitrile, 4-{[(1-methyl-1H-pyrazol-4-yl)methyl]amino}phenol, 4-[(cyclopropylmethyl)amino]phenol, 4-{[(1-methyl-1H-pyrazol-3-yl)methyl]amino}phenol, 4-(but-2-yn-1-ylamino)phenol, 4-(pyrazin-2-yl-amino)phenol, 4-(pyridin-2-ylamino)phenol, 4-(pyridazin-3-ylamino)phenol, 4-(pyrimidin-5-ylamino)phenol, 4-(pyridin-3-ylamino)phenol, 4-[(3,5-difluoro-4-methoxyphenyl)-amino]phenol, 4-(pyridin-4-ylamino)phenol, 4-[(3-fluoro-4-methoxyphenyl)amino]phenol, 2-(phenylamino)pyrimidin-5-ol, 5-[(4-hydroxyphenyl)amino]-2-methoxy benzonitrile, 4-{[3-(trifluoromethyl)phenyl]amino}phenol.
The hydroxy function(s) of the secondary amines listed above is (are) protected beforehand by a suitable protecting group prior to coupling to an acid derivative of the compound of formula (VII) as defined in the preceding general process.
To a solution of 2 g of the compound of Preparation 1 in 20 mL of dichloromethane there are added at ambient temperature 5.5 mL of N,N,N-triethylamine (6.96 mmol), 2.12 g of the compound of Preparation 1′ (6.96 mmol), and then 0.94 g of hydroxybenzotriazole (HOBT) and 1.34 g of 1-ethyl-3-(3′-dimethylaminopropyl)-carbodiimide (EDC) (6.96 mmol). The reaction mixture is subsequently stirred at ambient temperature overnight, and is then poured onto an ammonium chloride solution and extracted with ethyl acetate. The organic phase is subsequently dried over magnesium sulphate and then filtered and evaporated to dryness. The crude product so obtained is then purified by chromatography over silica gel (heptane/AcOEt gradient). The title product is obtained in the form of an oil.
1H-NMR: δ (500 MHz; dmso-d6; 300° K): 7.2-6.9 (m, 4H, H aromatic); 7.04-7.03-7.00 (m, 1H, H aromatic); 6.85 (m, 1H, H aromatic); 6.35-6.26-6.06 (m, 1H, H tetrahydroindolizine); 6.15-6.12 (m, 2H, H methylenedioxy); 5.06-4.84 (m, 1H, H dihydroisoquinoline); 4.86-4.17 (m, 2H, H dihydroisoquinoline); 3.65-3.6-3.55 (m, 3H, H methyl ester); 3.43-4.26 (m, 2H, H tetrahydroindolizine); 3.58-3.5 (m, 4H, H morpholine); 2.37-3.05 (m, 4H, 2H dihydroisoquinoline, 2H tetrahydroindolizine); 1.68-2.56 (m, 4H, H morpholine); 1.4-2.0 (m, 4H, H tetrahydroindolizine)
IR: ν: >C═O 1695 cm−1 ester; ν: >C═O 1625 cm−1 amide; ν: >C—O—C<1214-1176-1115 cm−1; >CH—Ar 772-744 cm−1
To a solution of 4.6 g of the compound of Step A (8.26 mmol) in 24 mL of dioxane there is added a solution of lithium hydroxide (675 mg, 16.1 mmol). The whole is placed in a 140 W microwave oven at 100° C. for a period of 2.5 hours. The reaction mixture is subsequently filtered and dried. The solid so obtained is dried at 40° C. in a hot cabinet in the presence of P2O5.
1H-NMR: δ (400 MHz; dmso-d6; 353° K): 6.7-7.15 (unresolved peak, 6H, H aromatic);
6.21 (s, 1H, H aromatic); 6.03 (s, 2H,H methylenedioxy); 4.0-5.0 (unresolved peak, 3H dihydroisoquinoline); 3.4-3.6 (unresolved peak, 3H tetrahydroindolizine, 3H morpholine); 2.5-3.1 (unresolved peak, 4H, 2H tetrahydroindolizine, 2H morpholine); 1.5-2.4 (unresolved peak, 10H morpholine)
IR: ν: >C═O 1567 broad cm−1 acetate; ν: 1236 cm−1
To a solution of 2.6 g of the compound of Step B (4.73 mmol) in 47 mL of dichloromethane there are added, dropwise, 1.2 mL of oxalyl chloride at 0° C. The reaction mixture is stirred at ambient temperature for 11 hours, and then co-evaporated several times with dichloromethane. The product so obtained is suspended in 37 mL of dichloromethane and is then added to a solution of 2.1 g of the compound obtained in Preparation 1″ (7.1 mmol) in 10 mL of dichloromethane in the presence of 0.6 mL of pyridine (7.1 mmol). The whole is stirred at ambient temperature overnight. The reaction mixture is concentrated and purified by chromatography over silica gel (dichloromethane/methanol gradient). The title product is obtained in the form of a foam.
1H-NMR: δ (500 MHz; dmso-d6; 300° K): 6.9-7.3 (9H aromatic); 6.88 (2H aromatic); 6.72-6.87 (2H aromatic); 6.64 (2H aromatic); 6.13 (2H methylenedioxy); 5.05-4.74 (1H dihydroisoquinoline); 4.25-4.13 (2H dihydroisoquinoline); 3.44-3.7 (4H morpholine); 3.62-3.52 (2H tetrahydroindolizine); 3.0-2.6 (4H, 2H tetrahydroindolizine, 2H dihydroisoquinoline); 2.54-1.94 (6H morpholine); 1.91-1.53 (4H tetrahydroindolizine); 0.92 (9H tert-butyl); 0.17 (6H dimethyl)
IR: ν: >C═O: 1632 cm−1; ν: >C—O—C<: 1237 cm−1; ν: —Si—O—C—: 1035 cm−1; —Si—C—: 910 cm−1; >CH—Ar: 806 cm−1
To a solution of 1.9 g of the compound obtained in Step C (2.3 mmol) in 4 mL of methanol there is added 0.646 g (11.5 mmol) of potassium hydroxide dissolved in 8 mL of methanol. The whole is stirred at ambient temperature for 30 minutes. The reaction mixture is subsequently diluted in dichloromethane and washed in succession with a 1N HCl solution, a saturated NaHCO3 solution and then a saturated NaCl solution until a neutral pH is reached. The organic phase is subsequently dried over magnesium sulphate, filtered and evaporated. The crude product so obtained is purified on silica gel (dichloromethane/methanol gradient). The solid is subsequently dissolved in dichloromethane, and 2 mL of 1N ethereal hydrogen chloride are added. The whole is stirred for one hour and then evaporated to dryness. The hydrochloride so obtained is dissolved in a water/acetonitrile mixture until completely dissolved and is then lyophilised.
Elemental microanalysis:
Rotatory power: (α)D20=+50.8° (c=9 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing the compound of Preparation 1″ used in Step C by 4-{[tert-butyl(dimethyl)silyl]oxy}-N-(4-methylphenyl)aniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing the compound of Preparation 1″ used in Step C by 4-{[tert-butyl(dimethyl)silyl]oxy}-N-(4-chlorophenyl)aniline.
Elemental microanalysis:
Rotatory power: (α)D20=+80.9° (c=2.5 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing the compound of Preparation 1″ used in Step C by 4-{[tert-butyl(dimethyl)silyl]oxy}-N-(3-fluoro-4-methylphenyl)aniline.
High-resolution mass (ESI+):
C44H43FN4O6 Empirical formula:
[M+H]+ calculated: 743.3245
[M+H]+ measured: 743.3250
Rotatory power: (α)D20=+40.7° (c=2.5 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing the compound of Preparation 1″ used in Step C by 4-{[tert-butyl(dimethyl)silyl]oxy}-N-(4-trifluoromethoxyphenyl)aniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing the compound of Preparation 1″ used in Step C by 4-{[tert-butyl(dimethyl)silyl]oxy}-N-(4-{[tert-butyl(dimethyl)silyl]-oxy}phenyl)aniline.
Elemental microanalysis:
Rotatory power: (α)D20=+50.8° (c=6 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing the compound of Preparation 1″ used in Step C by N-[4-({[tert-butyl(dimethyl)silyl]oxy}methyl)phenyl]-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-5-indolinamine.
Elemental microanalysis:
Rotatory power: (α)D20=+40.9° (c=3.5 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-5-indolinamine.
High-resolution mass (ESI+):
C46H47N5O6 Empirical formula:
[M+H]+ calculated: 766.3605
[M+H]+ measured: 766.3601
The procedure is as in the process of Example 1, replacing the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis: (theory for 1.1 HCl)
Rotatory power: (α)D20=+37.6° (c=7 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing the compound of Preparation 1′ used in Step A by the compound of Preparation 2′.
Elemental microanalysis:
Rotatory power: (α)D20=−45.1° (c=9 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}cyclohexyl)-1-methyl-1H-indol-5-amine.
High-resolution mass (ESI+):
C46H51N5O6 Empirical formula:
[M+H]+ calculated: 770.3918
[M+H]+ measured: 770.3928
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1′ used in Step A by the compound of Preparation 3′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
Rotatory power: (α)D20=+60.1° (c=6 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1′ used in Step A by the compound of Preparation 4′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1′ used in Step A by the compound of Preparation 5′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1′ used in Step A by the compound of Preparation 6′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1′ used in Step A by the compound of Preparation 7′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 2, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
High-resolution mass (ESI+):
C45H4479BrN5O4 Empirical formula:
[M+H]+ calculated: 798.2655
[M+H]+ measured: 798.2626
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 2, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-5-indolinamine.
High-resolution mass (ESI+):
C45H4679BrN5O4 Empirical formula:
[M+H]+ calculated: 800.2811
[M+H]+ measured: 800.2791
The procedure is as in the process of Example 1, replacing the compound of Preparation 1 used in Step A by the compound of Preparation 3.
Elemental microanalysis:
Rotatory power: (α)D20=+53.7° (c=6 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-5-indolinamine.
High-resolution mass (ESI+):
C44H4435ClN5O4 Empirical formula:
[M+H]+ calculated: 742.3160
[M+H]+ measured: 742.3120
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
Rotatory power: (α)D20=+55.9° (c=7 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-5-indolinamine.
Elemental microanalysis:
Rotatory power: (α)D20=+56.6° (c=6 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 4, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
Rotatory power: (α)D20=+55.0° (c=5 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing the compound of Preparation 1 used in Step A by the compound of Preparation 4.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1,2,3,4-tetrahydro-6-quinolinamine.
Elemental microanalysis: (theory for 1.5 HCl)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-4-methyl-3,4-dihydro-2H-1,4-benzoxazin-7-amine.
Elemental microanalysis: (theory for 1.1 HCl)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N1-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-N4,N4-diethyl-1,4-benzenediamine.
Elemental microanalysis: (theory for 1.6 HCl)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-5-indanamine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compounds of Preparations 1 and 1′ used in Step A by the respective compounds of Preparations 3 and 3′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
High-resolution mass (ESI+):
C46H4735ClN6O3 Empirical formula:
[M+H]+ calculated: 767.3476
[M+H]+ measured: 767.3476
The procedure is as in the process of Example 1, replacing the compound of Preparation 1 used in Step A by the compound of Preparation 5.
High-resolution mass (ESI+):
C45H46N4O6 Empirical formula:
[M+H]+ calculated: 739.3496
[M+H]+ measured: 739.3479
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 5, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 6, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
Rotatory power: (α)D20=+42.1° (c=6 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing the compound of Preparation 1 used in Step A by the compound of Preparation 7.
Elemental microanalysis:
Rotatory power: (α)D20=+34.5° (c=6 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 7, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine, it being understood that the product so obtained is not subjected to a step of salt formation in the presence of etheral hydrogen chloride.
Elemental microanalysis:
Rotatory power: (α)D20=+88.2° (c=7 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 8, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 9, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
High-resolution mass (ESI+):
C46H43N5O6D2 Empirical formula:
[M+H]+ calculated: 766.3573
[M+H]+ measured: 766.3533
Rotatory power: (α)D20=+35.5° (c=3.5 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing the compound of Preparation 1 used in Step A by the compound of Preparation 9, it being understood that the step of salt formation in the presence of ethereal hydrogen chloride is carried out only in the following Step B.
The product obtained in Step A is dissolved in dichloromethane, and 2 mL of 1N ethereal hydrogen chloride are added. The whole is stirred for one hour and then evaporated to dryness. The hydrochloride so obtained is dissolved in a water/acetonitrile mixture until completely dissolved, and is then lyophilised.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 7, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indazol-5-amine.
Elemental microanalysis:
Rotatory power: (α)D20=+42.6° (c=5 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 7, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1,2,3,4-tetrahydro-6-quinolinamine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 7, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-4-methyl-3,4-dihydro-2H-1,4-benzoxazin-7-amine.
High-resolution mass (ESI+):
C47H49N5O7 Empirical formula:
[M+H]+ calculated: 796.3710
[M+H]+ measured: 796.3687
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indazol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 24, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 4, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indazol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-(1′-methyl-1′,2′-dihydrospiro[cyclopropane-1,3′-indol]-5′-yl)amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compounds of Preparations 1 and 1′ used in Step A by the respective compounds of Preparations 3 and 4′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
Rotatory power: (α)D20=+13.6° (c=4 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 10, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 11, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1,3,3-trimethyl-5-indolinamine, it being understood that the product so obtained is not subjected to a step of salt formation in the presence of ethereal hydrogen chloride.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 9, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indazol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 9, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3-fluoro-4-methylaniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compounds of Preparations 1 and 1′ used in Step A by the respective compounds of Preparations 3 and 8′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
High-resolution mass (ESI+):
C43H4235ClN5O3 Empirical formula:
[M+H]+ calculated: 712.3054
[M+H]+ measured: 712.3060
Rotatory power: (α)D20=+35.8° (c=6 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-4-methoxy-3-(trifluoromethyl)aniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-4-(methylsulphanyl)-3-(trifluoromethyl)aniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}-3-fluorophenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 12, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compounds of Preparations 1 and 1′ used in Step A by the respective compounds of Preparations 13 and 3′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
Rotatory power: (α)D20=+113.2° (c=6 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 13.
Elemental microanalysis:
Rotatory power: (α)D20=+111.4° (c=6 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 13, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
Rotatory power: (α)D20=+116.8° (c=5 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 13, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-ethyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 13, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-5-indolinamine.
High-resolution mass (ESI+):
C46H43N5O6 Empirical formula:
[M+H]+ calculated: 762.3292
[M+H]+ measured: 762.3284
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 13, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-isopropyl-1H-indol-5-amine.
Elemental microanalysis: (theory for 1.3 HCl)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 13, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-ethyl-5-indolinamine.
Elemental microanalysis: (theory for 1.3 HCl)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 13, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-isopropyl-5-indolinamine.
Elemental microanalysis: (theory for 1.3 HCl)
The procedure is as in the process of Example 1, replacing on the one hand the compounds of Preparations 1 and 1′ used in Step A by the respective compounds of Preparations 14 and 3′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis: (theory for 1.9 HCl)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 14, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-5-indolinamine.
Elemental microanalysis:
Rotatory power: (α)D20=+142.2° (c=3.5 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 14, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
Rotatory power: (α)D20=+133.3° (c=3.5 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 14, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-fluorophenyl)-1-methyl-1H-indol-5-amine, it being understood that step D is then limited to a step of formation of the hydrochloride.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 15, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1,2,3,4-tetrahydro-6-quinolinamine.
High-resolution mass (ESI+):
C48H47N5O6 Empirical formula:
[M+H]+ calculated: 790.3605
[M+H]+ measured: 790.3591
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 15, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 16, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
High-resolution mass (ESI+):
C46H43N5O5 Empirical formula:
[M+H]+ calculated: 746.3342
[M+H]+ measured: 746.3348
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 17, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine, it being understood that the product so obtained is not subjected to a step of salt formation in the presence of ethereal hydrogen chloride.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 17, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-5-indolinamine, it being understood that the product so obtained is not subjected to a step of salt formation in the presence of ethereal hydrogen chloride.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 17, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine, it being understood that the product so obtained is not subjected to a step of salt formation in the presence of ethereal hydrogen chloride as described in Example 1, Step D. The compound so obtained is deprotected in the presence of 10 equivalents of trifluoroacetic acid in dichloromethane (10 mL/mmol) at ambient temperature overnight. Then, the product is subsequently isolated by concentrating the reaction mixture to dryness. It is finally subjected to a step of salt formation in the presence of ethereal hydrogen chloride.
Elemental microanalysis: (theory for 1.9 HCl)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 17, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-5-indolinamine, it being understood that the product so obtained is not subjected to a step of salt formation in the presence of ethereal hydrogen chloride as described in Example 1, Step D. The compound so obtained is deprotected in the presence of 10 equivalents of trifluoroacetic acid in dichloromethane (10 mL/mmol) at ambient temperature overnight. Then, the product is subsequently isolated by concentrating the reaction mixture to dryness. It is finally subjected to a step of salt formation in the presence of ethereal hydrogen chloride.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compounds of Preparations 1 and 1′ used in Step A by the respective compounds of Preparations 18 and 3′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
High-resolution mass (ESI+):
C46H46N6O5 Empirical formula:
[M+H]+ calculated: 763.3608
[M+H]+ measured: 763.3594
The procedure is as in the process of Example 1, replacing on the one hand the compounds of Preparations 1 and 1′ used in Step A by the respective compounds of Preparations 19 and 3′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis: (theory for 1.9 HCl)
The procedure is as in the process of Example 1, replacing the compound of Preparation 1 used in Step A by the compound of Preparation 20.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 20, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-5-indolinamine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 21, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine, it being understood that the product so obtained is not subjected to a step of salt formation in the presence of ethereal hydrogen chloride.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 21, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-5-indolinamine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 20, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3-fluoro-4-methylaniline.
Elemental microanalysis:
Rotatory power: (α)D20=+35.0° (c=6 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 22, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
High-resolution mass (ESI+):
C46H4635ClN5O4 Empirical formula:
[M+H]+ calculated: 768.3317
[M+H]+ measured: 768.3254
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 23, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
Rotatory power: (α)D20=+86.6° (c=8 mg/mL, MeOH)
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3-thiophenamine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 20, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
High-resolution mass (ESI+):
C44H4235ClN5O5 Empirical formula:
[M+H]+ calculated: 756.2953
[M+H]+ measured: 756.2936
The procedure is as in the process of Example 1, replacing the compound of Preparation 1″ used in Step C by N-butyl-4-{[tert-butyl(dimethyl)silyl]oxy}aniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing the compound of Preparation 1″ used in Step C by 1a N,N-dibutylamine, it being understood that Step D is then limited to a step of formation of the hydrochloride.
High-resolution mass (ESI+):
C39H50N4O5 Empirical formula:
[M+H]+ calculated: 655.3859
[M+H]+ measured: 655.3826
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(3-{[tert-butyl(dimethyl)silyl]oxy}propyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(3-{[tert-butyl(dimethyl)silyl]oxy}butyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 4, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3-fluoro-4-methylaniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 21, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3-fluoro-4-methylaniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compounds of Preparations 1 and 1′ used in Step A by the compounds of Preparations 3 and 2′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indazol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 25, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 18, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3-chloro-4-methylaniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 26, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3-fluoro-4-methylaniline.
High-resolution mass (ESI+):
C42H40F2N4O5 Empirical formula:
[M+H]+ calculated: 719.3045
[M+H]+ measured: 719.3030
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 26, and on the other hand the compound of Preparation 1″ used in Step C by 4-{[tert-butyl(dimethyl)silyl]oxy}-N-(4-fluorophenyl)aniline.
High-resolution mass (ESI+):
C41H38F2N4O5 Empirical formula:
[M+H]+ calculated: 705.2889
[M+H]+ measured: 705.2882
The procedure is as in the process of Step A of Example 1, replacing the compound of Preparation 1 by the compound of Preparation 27.
The procedure is as in the process of Steps B, C and D of Example 113.
The procedure is as in the processes of Steps B and C of Example 1.
There is subsequently carried out a reaction of deprotection of the allyl group in the presence of 1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione (also called dimethyl barbiturate) and of tetrakis(triphenylphosphine)palladium in a mixture of methanol and dichloromethane.
Deprotection of the tert-butylsilyloxy group is carried out according to the process of Step D of Example 1.
Elemental microanalysis:
High-resolution mass (ESI+):
C42H42FN4O5 Empirical formula:
[M+H]+ calculated: 701.3139
[M+H]+ measured: 701.3134
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 20, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indazol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Step A of Example 1, replacing the compound of Preparation 1 by the compound of Preparation 28.
To a solution of the compound of Step A (1 g; 1.54 mmol) in THF (8 mL) there is added a 1 M tetrabutylammonium fluoride solution (1.7 mL; 1.7 mmol). The reaction mixture is stirred for 3 hours at ambient temperature, and then the THF is evaporated off and replaced by ethyl acetate. The organic phase is washed with water and then with brine, before being dried over MgSO4, filtered and concentrated to dryness. The crude product obtained (830 mg) is used as such in the following step.
1H-NMR: δ (500 MHz; dmso-d6; 300° K) 7.55-6.9 (m, 7H, H aromatic); 6.55-6.35 (m, 1H, H aromatic dihydropyrrolizine); 5.5-5.3 (m, 1H, alcohol); 5.25-4.6 (m, 1H, H tertiary tetrahydroisoquinoline); 5.0-4.2 (m, 2H, H aliphatic tetrahydroisoquinoline); 4.95-4.62 (m, 1H, HCOH); 3.7-3.6 (sl, 3H, OMe); 3.6-3.2. (m, 2H, 2H, H aliphatic dihydropyrrolizine); 3.7-3.5 (m, 4H, H morpholine); 3.0-2.4 (m, 2H, H aliphatic tetrahydroisoquinoline); 2.6-1.96 (m, 4H, H morpholine); 2.6-1.96 (m, 2H, H aliphatic dihydropyrrolizine)
To a suspension of 62 mg (1.54 mmol) of sodium hydride in 8 mL of anhydrous THF cooled to 0° C. there is added a solution of the compound of Step B (820 mg; 1.54 mmol) in THF (6 mL). The suspension is stirred for 15 minutes at 0° C. There is subsequently added 0.15 mL (1.69 mmol) of allyl bromide, dropwise. The reaction mixture is stirred for 5 hours at ambient temperature, and then hydrolysed with a saturated aqueous sodium bicarbonate solution and extracted with dichloromethane. The organic phase is dried over MgSO4, filtered and concentrated to dryness. The oil so obtained is purified by flash chromatography (gradient: dichloromethane/ammoniacal methanol) to yield the title product in solid form.
1H-NMR: δ (500 MHz; dmso-d6; 300° K): 7.5-6.8 (m, 7H, H aromatic); 6.55-6.3 (m, 1H, H aromatic dihydropyrrolizine); 5.9 (s, 1H, H allyl); 5.3-5.2 (m, 2H, H allyl); 5.2-5.0 (m, 1H, H tertiary tetrahydroisoquinoline); 5.0-4.2 (m, 2H, H aliphatic tetrahydroindolizine); 4.7-4.42 (m, 1H, HCO allyl); 4.6-3.85 (m, 2H, H aliphatic dihydropyrrolizine); 4.6-3.85 (m, 2H, CH2 allylic); 3.7-3.5 (m, 3H, OMe); 3.65-3.5 (m, 4H, morpholine); 3.3-2.4 (m, 4H, morpholine and H aliphatic dihydropyrrolidine); 2.4-1.7 (m, 6H, morpholine and CH2N)
The procedure is as in the processes of Steps B and C of Example 1.
There is then carried out a reaction of deprotection of the allyl group in the presence of 1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione (also called dimethyl barbiturate) and of tetrakis(triphenylphosphine)palladium (Synlett, 2007, 21, p. 3136).
Deprotection of the tert-butylsilyloxy group is carried out according to the process of Step D of Example 1.
Elemental microanalysis:
High-resolution mass (ESI+):
C41FH39N4O5 Empirical formula:
[M+H]+ calculated: 687.2983
[M+H]+ measured: 687.2958
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-pyrrolo[2,3-b]pyridin-5-amine.
High-resolution mass (ESI+):
C44ClH44N6O4 Empirical formula:
[M+H]+ calculated: 755.3113
[M+H]+ measured: 755.3088
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 6, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indazol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing the compound of Preparation 1′ used in Step A by the compound of Preparation 9′.
Elemental microanalysis:
The procedure is as in the process of Example 102 replacing the compound of Preparation 28 used in Step A by the compound of Preparation 29.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compounds of Preparations 1 and 1′ used in Step A by the respective compounds of Preparations 3 and 10′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compounds of Preparations 1 and 1′ used in Step A by the respective compounds of Preparations 3 and 11′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis
To a solution of the compound of Example 1, taken in the form of the free base, in 10 mL of CH2Cl2 there is added in portions meta-chloroperbenzoic acid (0.242 mg; 1.4 mmol). The whole is subsequently stirred at ambient temperature overnight. The reaction mixture is subsequently concentrated to dryness, and then the residue is purified by reverse-phase flash chromatography (gradient: acetonitrile/water/trifluoroacetic acid). There is obtained, after concentration, the title product in the form of a solid.
Elemental microanalysis:
High-resolution mass (ESI+):
C43H42N4O7 Empirical formula:
[M+H]+ calculated: 727.3132
[M+H]+ measured: 727.3110
The procedure is as in the process of Example 1, replacing on the one hand the compounds of Preparations 1 and 1′ used in Step A by the respective compounds of Preparations 3 and 12′, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-indol-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by 4-{[tert-butyl(dimethyl)silyl]oxy}-N-(4-fluorophenyl)aniline.
High-resolution mass (ESI+):
C42H40ClN4O4 Empirical formula:
[M+H]+ calculated: 719.2722
[M+H]+ measured: 719.2806
The procedure is as in the process of Example 1, replacing the compound of Preparation 1 used in Step A by the compound of Preparation 6.
Elemental microanalysis:
The procedure is as in the process of Step A of Example 1, replacing the compound of Preparation 1 by the compound of Preparation 30.
2.75 g of the compound of Step A (4.47 mmol) in solution in 75 mL of THF are stirred in the presence of 37 mL of 1 M HCl at reflux for 15 hours. 100 mL of water and 100 mL of ethyl acetate are added to the reaction mixture. There are subsequently added 4 g of NaHCO3 (4.7 mmol) in powder form until a basic pH is reached. The compound is extracted with ethyl acetate, and the organic phase is dried over MgSO4, filtered and concentrated to dryness. The title product is obtained in the form of an oil.
1H-NMR: δ (500 MHz; dmso-d6; 300° K): 7.9-7.2 (m, 4H, H aromatic); 7.02 (m, 1H, H aromatic); 6.88 (m, 1H, H aromatic); 6.44-5.87 (m, 1H, H aromatic tetrahydroindolizine); 6.17 (d, 2H, CH2 methylenedioxy); 5.07/4.85/3.79 (m, 1H, H tertiary tetrahydroisoquinoline); 4.88/4.27/4.24 (m, 2H, H aliphatic tetrahydroisoquinoline); 4.22-3.43 (m, 4H, H aliphatic tetrahydroindolizine); 3.59-3.49 (m, 4H, H aliphatic morpholine); 3.75-3.52 (s, 3H, Me); 2.93-2.49 (m, 2H, H aliphatic tetrahydroindolizine); 2.75-2.28 (m, 2H, H aliphatic tetrahydroindolizine); 2.68-1.68 (m, 6H, H aliphatic morpholine+CH2)
To a solution of 2.55 g of the compound obtained in Step B (4.47 mmol) in 30 mL of methanol there are added in portions 558 mg (14.75 mmol) of sodium borohydride. The reaction mixture is stirred for one hour at ambient temperature. 50 mL of 1M HCl are subsequently added, and the methanol is evaporated off. The aqueous phase is subsequently neutralised with NaHCO3 and then extracted with dichloromethane. The organic phase is washed in succession with H2O, dried over MgSO4, filtered and concentrated to dryness. The oil so obtained is purified by flash chromatography (dichloromethane/ethanol-ammonia gradient). The title product is obtained in the form of a solid.
1H-NMR: δ (500 MHz; dmso-d6; 300° K): 7.22-6.97 (m, 4H, H aromatic tetrahydroisoquinoline); 7.05 (s, 1H, H aromatic); 6.89 (s, 1H, H aromatic); 6.37/6.3/6.07 (m, 1H, H aromatic tetrahydroindolizine); 6.16 (d, 2H, CH2 methylenedioxy); 5.09 (m, 1H, H tertiary tetrahydroisoquinoline); 4.87-4.21 (m, 2H, H aliphatic tetrahydroindolizine); 4.20-3.67 (m, 2H, H aliphatic tetrahydroindolizine); 4.10-3.86 (m, 1H, H tertiary tetrahydroindolizine); 3.69-3.58 (s, 3H, Me); 3.69-3.52 (m, 4H, H aliphatic morpholine); 2.96+2.43 (m, 2H, H aliphatic tetrahydroisoquinoline); 2.55-2.0 (m, 6H, H aliphatic morpholine+CH2); 2.4-1.5 (m, 4H, H aliphatic tetrahydroindolizine)
IR: OH: 3239 cm−1; —C═O (ester): 1696 cm−1; —C═O (amide): 1624 cm−1; C—C—OH (secondary alcohol): 1034 cm−1
To a suspension of 331 mg (8.26 mmol) of sodium hydride in 15 mL of anhydrous THF cooled to 0° C. there are added 2.37 g (4.13 mmol) of the compound obtained in Step C. The suspension is stirred for 15 minutes at 0° C., and then a solution of 790 μL (9.1 mmol) of allyl bromide in 10 mL of THF is added slowly (over a period of 15 minutes). The reaction mixture is stirred for one hour at 0° C. and then for 15 hours at ambient temperature. The solution is hydrolysed with a saturated aqueous NH4Cl solution. The compound is extracted with ethyl acetate; the organic phase is dried over MgSO4, filtered and concentrated to dryness. The oil so obtained is purified by flash chromatography (cyclohexane/ethyl acetate gradient). The title product is obtained in the form of a solid.
1H-NMR: δ (500 MHz; dmso-d6; 300° K): 7.2-6.9 (m, 4H, H aromatic tetrahydroisoquinoline); 7.2-6.8 (m, 2H, H aromatic); 6.4-6.0 (m, 1H, H aromatic tetrahydroindolizine); 6.10 (d, 2H, CH2 methylenedioxy); 5.9 (m, 1H, allyl); 5.35-5.10 (m, 2H, allyl); 5.1+4.75 (m, 1H, H tertiary tetrahydroisoquinoline); 4.15-3.9 (m, 2H, CH2 allyl); 3.9-3.6 (m, 1H, H tertiary tetrahydroindolizine); 4.1-3.4 (m, 4H, H aliphatic morpholine); 4.9-3.4 (m, 4H, 2H aliphatic tetrahydroindolizine+2H aliphatic tetrahydroisoquinoline); 3.8-3.6 (s, 3H, Me); 2.55-1.6 (m, 6H, H aliphatic morpholine+CH2); 3.3-1.5 (m, 6H, 4H aliphatic tetrahydroindolizine+2H aliphatic tetrahydroisoquinoline)
The procedure is as in the processes of Steps B and C of Example 1.
There is then carried out a reaction of deprotection of the allyl group in the presence of 1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione (also called dimethyl barbiturate) and of tetrakis(triphenylphosphine)palladium in a mixture of methanol and dichloromethane.
Deprotection of the silyloxy group is carried out according to the process of Step D of Example 1.
Elemental microanalysis:
High-resolution mass (ESI+):
C43H43N4O7 Empirical formula:
[M+H]+ calculated: 727.3132
[M+H]+ measured: 727.3121
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 6, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3-fluoro-4-methylaniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by 4-{[tert-butyl(dimethyl)silyl]oxy}-N-(2-fluorophenyl)aniline.
High-resolution mass (ESI+):
C42H40ClN4O4 Empirical formula:
[M+H]+ calculated: 719.2722
[M+H]+ measured: 719.2802
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by 4-{[tert-butyl(dimethyl)silyl]oxy}-N-(3-fluorophenyl)aniline.
High-resolution mass (ESI+):
C42H40ClN4O4 Empirical formula:
[M+H]+ calculated: 719.2722
[M+H]+ measured: 719.2819
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-2,4-difluoroaniline.
High-resolution mass (ESI+):
C42H39ClF2N4O4 Empirical formula:
[M+H]+ calculated: 737.2628
[M+H]+ measured: 737.2660
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3,4-difluoro aniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by 3-[(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)amino]benzonitrile.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing the compound of Preparation 1 used in Step A by the compound of Preparation 31.
High-resolution mass (ESI+):
C42H37N5O6 Empirical formula:
[M+H]+ calculated: 708.2822
[M+H]+ measured: 708.2788
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 31, and on the other hand the compound of Preparation 1″ used in Step C by 4-{[tert-butyl(dimethyl)silyl]oxy}-N-(3-fluorophenyl)aniline.
High-resolution mass (ESI+):
C42H36FN5O6 Empirical formula:
[M+H]+ calculated: 726.2728
[M+H]+ measured: 726.2723
The procedure is as in the process of Example 1, replacing the compound of Preparation 1″ used in Step C by 4-{[tert-butyl(dimethyl)silyl]oxy}-N-(3-fluorophenyl)aniline.
High-resolution mass (ESI+):
C43H41FN4O6 Empirical formula:
[M+H]+ calculated: 729.3088
[M+H]+ measured: 729.3068
The procedure is as in the process of Example 1, replacing the compound of Preparation 1′ used in Step A by the compound of Preparation 13′.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3-methoxyaniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3,5-difluoro aniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3-methylaniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing the compound of Preparation 1′ used in Step A by the compound of Preparation 14′.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing the compound of Preparation 1′ used in Step A by the compound of Preparation 10′.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by 4-[(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)amino]benzonitrile.
Elemental microanalysis
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-phenylaniline.
High-resolution mass (ESI+):
C42H40Cl2N4O4 Empirical formula:
[M+H]+ calculated: 735.2427
[M+H]+ measured: 735.2524
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3-chloroaniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)pyrimidin-2-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by 4-{[tert-butyl(dimethyl)silyl]oxy}-N-(cyclobutylmethyl)aniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by 2-[(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)amino]benzonitrile.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-pyrazol-4-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by 4-{[tert-butyl(dimethyl)silyl]oxy}-N-(cyclopropylmethyl)aniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1-methyl-1H-pyrazol-3-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by 4-{[tert-butyl(dimethyl)silyl]oxy}-N-(but-2-yn-1-yl)aniline.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)pyridin-2-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)pyridazin-3-amine.
High-resolution mass (ESI+):
C42H39ClN6O4 Empirical formula:
[M+H]+ calculated: 703.2721
[M+H]+ measured: 703.2783
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)pyrimidin-5-amine.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)pyridin-3-amine.
High-resolution mass (ESI+):
C41H40ClN5O4 Empirical formula:
[M+H]+ calculated: 702.2769
[M+H]+ measured: 702.2858
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3,5-difluoro-4-methoxyaniline.
High-resolution mass (ESI+):
C43H41ClF2N4O5 Empirical formula:
[M+H]+ calculated: 767.2734
[M+H]+ measured: 767.2804
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)pyridin-4-amine.
High-resolution mass (ESI+):
C41H40ClN5O4 Empirical formula:
[M+H]+ calculated: 702.2842
[M+H]+ measured: 702.2842
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3-fluoro-4-methoxyaniline.
High-resolution mass (ESI+):
C43H42ClFN4O5 Empirical formula:
[M+H]+ calculated: 749.2828
[M+H]+ measured: 749.2878
The procedure is as in the process of Example 1, replacing the compound of Preparation 1′ used in Step A by the compound of Preparation 11′.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing the compound of Preparation 1′ used in Step A by the compound of Preparation 15′.
Elemental microanalysis:
The procedure is as in Steps A, B and C of the process of Example 1, replacing the compound of Preparation 1″ used in Step C by 5-(benzyloxy)-N-phenylpyrimidin-2-amine.
The compound of Step A (150 mg; 0.2 mmol) is dissolved in 8 mL of methanol, and 30 mg of Pd/C (10% by mass palladium) are added. The reaction mixture is stirred under a hydrogen atmosphere (1.2 bar) for 15 hours and is then filtered over a Whatman filter, concentrated in vacuo and purified by reverse-phase chromatography (gradient: acetonitrile/water in the presence of trifluoroacetic acid). The desired product is obtained in the form of a trifluoroacetate salt.
High-resolution mass (ESI+):
C41H40N6O6 Empirical formula:
[M+H]+ calculated: 713.3082
[M+H]+ measured: 713.3080
The procedure is as in the process of Example 1, replacing the compound of Preparation 1′ used in Step A by the compound of Preparation 16′.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by 5-[(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)amino]-2-methoxybenzonitrile.
High-resolution mass (ESI+):
C44H42ClN5O5 Empirical formula:
[M+H]+ calculated: 756.2874
[M+H]+ measured: 756.2917
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 6, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(diméthyl)silyl]oxy}phényl)-1-méthyl-1H-pyrazol-4-amine.
High-resolution mass (ESI+):
C41H44N6O5 Empirical formula:
[M+H]+ calculated: 701.3446
[M+H]+ measured: 701.3446
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 3, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-3-(trifluoromethyl)aniline.
High-resolution mass (ESI+):
C43H40ClF3N4O4 Empirical formula:
[M+H]+ calculated: 769.2690
[M+H]+ measured: 769.2718
The procedure is as in the process of Example 1, replacing the compound of Preparation 1′ used in Step A by the compound of Preparation 17′.
Elemental microanalysis:
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 7, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(diméthyl)silyl]oxy}phényl)-1-méthyl-1H-pyrazol-4-amine.
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 7, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)pyrimidin-5-amine.
The procedure is as in the process of Example 1, replacing the compound of Preparation 1′ used in Step A by the compound of Preparation 18′.
Microanalyse élémentaire:
High-resolution mass (ESI+):
C43H42N4O6 Empirical formula:
[M+H]+ calculated: 711.3177
[M+H]+ measured: 711.3178
The procedure is as in the process of Example 1, replacing the compound of Preparation 1′ used in Step A by the compound of Preparation 19′.
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 4, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(diméthyl)silyl]oxy}phényl)-1-méthyl-1H-pyrazol-4-amine.
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 32, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(diméthyl)silyl]oxy}phényl)-1-méthyl-1H-pyrazol-4-amine.
The procedure is as in the process of Example 1, replacing on the one hand the compound of Preparation 1 used in Step A by the compound of Preparation 14, and on the other hand the compound of Preparation 1″ used in Step C by N-(4-{[tert-butyl(diméthyl)silyl]oxy}phényl)-1-méthyl-1H-pyrazol-4-amine.
The fluorescence polarisation tests were carried out on microplates (384 wells). The Bcl-2 protein, at a final concentration of 2.50×10−8 M, is mixed with a fluorescent peptide (Fluorescein-REIGAQLRRMADDLNAQY), at a final concentration of 1.00×10−8 M in a buffer solution (Hepes 10 mM, NaCl 150 mM, Tween20 0.05%, pH 7.4), in the presence or in the absence of increasing concentrations of test compounds. After incubation for 2 hours, the fluorescence polarisation is measured.
The results are expressed in IC50 (the concentration of compound that inhibits fluorescence polarisation by 50%) and are presented in Table 1 below.
The results show that the compounds of the invention inhibit interaction between the Bcl-2 protein and the fluorescent peptide described hereinbefore.
The cytotoxicity studies were carried out on the RS4;11 leukaemia tumour line.
The cells are distributed onto microplates and exposed to the test compounds for 48 hours.
The cell viability is then quantified by a colorimetric assay, the Microculture Tetrazolium Assay (Cancer Res., 1987, 47, 939-942).
The results are expressed in IC50 (the concentration of compound that inhibits cell viability by 50%) and are presented in Table 1 below.
The results show that the compounds of the invention are cytotoxic.
The ability of the compounds of the invention to activate caspase 3 is evaluated in a xenograft model of RS4;11 leukaemia cells.
1×107 RS4;11 cells are grafted sub-cutaneously into immunosuppressed mice (SCID strain). 25 to 30 days after the graft, the animals are treated orally with the various compounds. Sixteen hours after treatment, the tumour masses are recovered and lysed, and the caspase 3 activity is measured in the tumour lysates.
This enzymatic measurement is carried out by assaying the appearance of a fluorigenic cleavage product (DEVDase activity, Promega). It is expressed in the form of an activation factor corresponding to the ratio between the two caspase activities: the activity for the treated mice divided by the activity for the control mice.
The results obtained are presented in Table 2 and show that the compounds of the invention are capable of inducing apoptosis in RS4;11 tumour cells in vivo.
The ability of the compounds of the invention to activate caspase 3 is evaluated in a xenograft model of RS4;11 leukaemia cells.
1×107 RS4;11 cells are grafted sub-cutaneously into immunosuppressed mice (SCID strain). 25 to 30 days after the graft, the animals are treated orally with the various compounds. After treatment, the tumour masses are recovered and lysed, and the cleaved (activated) form of caspase 3 is quantified in the tumour lysates.
The quantification is carried out using the “Meso Scale Discovery (MSD) ELISA platform” test, which specifically assays the cleaved form of caspase 3. It is expressed in the form of an activation factor corresponding to the ratio between the quantity of cleaved caspase 3 in the treated mice divided by the quantity of cleaved caspase 3 in the control mice.
The results obtained are presented in Table 3 and show that the compounds of the invention are capable of inducing apoptosis in RS4;11 tumour cells in vivo.
The anti-tumour activity of the compounds of the invention is evaluated in a xenograft model of RS4;11 leukaemia cells.
1×107 RS4;11 cells are grafted sub-cutaneously into immunosuppressed mice (SCID strain). 25 to 30 days after the graft, when the tumour mass has reached about 150 mm3, the mice are treated orally with the various compounds in two different regimes (daily treatment for five days per week for two weeks, or two treatments weekly for two weeks). The tumour mass is measured twice weekly from the start of treatment.
The compounds of the invention have anti-tumour activities, by the oral route, in the RS4;11 leukaemia model (acute lymphoblastic leukaemia) with ΔT/C (qualification parameter of the activity of a product, which is defined as the ratio tumour volume of the treated group/tumour volume of the untreated control group) ranging from −15 to −56% related to tumour regression. The results obtained therefore show that the compounds of the invention are capable of inducing significant tumour regression during the treatment period.
| Number | Date | Country | Kind |
|---|---|---|---|
| 1200193 | Jan 2012 | FR | national |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 14374071 | Jul 2014 | US |
| Child | 14799840 | US |
