# Patent

## Title
Alkoxy indolinone based protein kinase inhibitors

## Abstract

Alkoxy indolinone based acid and amide derivatives have enhanced and unexpected drug properties as inhibitors of protein kinases and are useful in treating disorders related to abnormal protein kinase activities such as cancer.

## Background
FIELD OF INVENTION
The invention relates to protein kinase inhibitors and to their use in treating disorders related to abnormal protein kinase activities such as cancer and inflammation. More particularly, the invention relates to alkoxy indolinone based derivatives and their pharmaceutically acceptable salts employable as protein kinase inhibitors.
BACKGROUND
Protein kinases are enzymes that catalyze the phosphorylation of hydroxyl groups of tyrosine, serine, and threonine residues of proteins. Many aspects of cell life (for example, cell growth, differentiation, proliferation, cell cycle and survival) depend on protein kinase activities. Furthermore, abnormal protein kinase activity has been related to a host of disorders such as cancer and inflammation. Therefore, considerable effort has been directed to identifying ways to modulate protein kinase activities. In particular, many attempts have been made to identify small molecules that act as protein kinase inhibitors.
Several pyrrolyl-indolinone derivatives have demonstrated excellent activity as inhibitors of protein kinases (Larid et al. FASEB J. 16, 681, 2002; Smolich et al. Blood, 97, 1413, 2001; Mendel et al. Clinical Cancer Res. 9, 327, 2003; Sun et al. J. Med. Chem. 46, 1116, 2003). The clinical utility of these compounds has been promising, but has been partially compromised due to the relatively poor aqueous solubility and/or other drug properties. What is needed is a class of modified pyrrolyl-indolinone derivatives having both inhibitory activity and enhanced drug properties.
SUMMARY
The invention is directed to alkoxy indolinone based derivatives and to their use as inhibitors of protein kinases. It is disclosed herein that alkoxy indolinone based derivatives have enhanced and unexpected drug properties that advantageously distinguish this class of compounds over known pyrrolyl-indolinone derivatives having protein kinase inhibition activity. It is also disclosed herein that alkoxy indolinone based derivatives are useful in treating disorders related to abnormal protein kinase activities such as cancer.
One aspect of the invention is directed to a compound represented by Formula (I):




In Formula (I), R1 is selected from the group consisting of hydrogen, halo, (C1-C6) alkyl, (C3-C8) cycloalkyl, (C1-C6) haloalkyl, hydroxy, (C1-C6) alkoxy, amino, (C1-C6) alkylamino, amide, sulfonamide, cyano, substituted or unsubstituted (C6-C10) aryl; R2 is selected from the group consisting of hydrogen, halo, (C1-C6) alkyl, (C3-C8) cycloalkyl, (C1-C6) haloalkyl, hydroxy, (C1-C6) alkoxy, (C2-C8) alkoxyalkyl, amino, (C1-C6) alkylamino, (C6-C10) arylamino; R3 is selected from the group consisting of hydrogen, (C1-C6) alkyl, (C6-C10) aryl, (C5-C10) heteroaryl, and amide; R4, R5, R6 and R8 are independently selected from the group consisting of hydrogen and (C1-C6) alkyl; R7 is (C1-C6) alkyl; R9 is selected from the group consisting of hydroxy, (C1-C6) O-alkyl, (C3-C8) O-cycloalkyl, and NR10R11; where R10 and R11 are independently selected from the group consisting of hydrogen, (C1-C6) alkyl, (C1-C6) hydroxyalkyl, (C2-C6) dihydroxyalkyl, (C1-C6) alkoxy, (C1-C6) alkyl carboxylic acid, (C1-C6) alkyl phosphonic acid, (C1-C6) alkyl sulfonic acid, (C1-C6) hydroxyalkyl carboxylic acid, (C1-C6) alkyl amide, (C3-C8) cycloalkyl, (C5-C8) heterocycloalkyl, (C6-C8) aryl, (C5-C8) heteroaryl, (C3-C8) cycloalkyl carboxylic acid, or R10 and R11 together with N forms a (C5-C8) heterocyclic ring either unsubstituted or substituted with one or more hydroxyls, ketones, ethers, and carboxylic acids; n is 1, 2, or 3; and m is 0, 1, or 2. Alternatively, this aspect of the invention also is directed to a pharmaceutically acceptable salt, its tautomer, a pharmaceutically acceptable salt of its tautomer, or a prodrug of Formula (I).

A first preferred subgenus of this first aspect of the invention is directed to the compound, salt, tautomer, or prodrug represented by Formula (II):




In Formula (II), R12 is selected from the group consisting of hydrogen, (C1-C6) alkyl, and (C3-C8) cycloalkyl. Other groups are as defined in Formula (I). In preferred embodiments, R1 and R2 are independently selected from the group consisting of hydrogen and fluoro; R3 and R4 are methyl; R5, R6, R8, and R12 are hydrogen; R7 is (C1-C6) alkyl; n is 1 or 2; and m is 0 or 1. Preferred species include the following compounds:








A second preferred subgenus of this first aspect of the invention is directed to a compound, salt, tautomer, or prodrug represented by Formula (III):




In Formula (III), the various R groups are the same as Formula (I). In preferred embodiments, R1 and R2 are independently selected from the group consisting of hydrogen, halo, cyano; R3 is selected from the group consisting of hydrogen, (C1-C6) alkyl, (C6-C10) aryl, (C5-C10) heteroaryl, and amide; R4, R5, R6 and R8 are independently selected from the group consisting of hydrogen and (C1-C6) )alkyl; R7 is (C1-C6) alkyl; n is 1 or 2; m is 0 or 1; and R10 and R11 are selected from the group consisting of hydrogen, (C1-C6) alkyl, (C1-C6) hydroxyalkyl, (C2-C6) dihydroxyalkyl, (C1-C6) alkoxy, (C2-C6) alkyl carboxylic acid, (C1-C6) alkyl phosphonic acid, (C1-C6) alkyl sulfonic acid, (C2-C6) hydroxyalkyl carboxylic acid, (C1-C6) alkyl amide, (C3-C8) cycloalkyl, (C5-C8) heterocycloalkyl, (C6-C8) aryl, (C5-C8) heteroaryl, (C4-C8) cycloalkyl carboxylic acid, or R10 and R11 together with N forms a (C5-C8) heterocyclic ring either unsubstituted or substituted with one or more hydroxyls, ketones, ethers, and carboxylic acids.

In a first subgroup of this second subgenus, m is 0. Preferred species of this first subgroup are represented by the following structures:







In a second subgroup of this second subgenus, m is 1. Preferred species of this second subgroup are represented by the following structures:




Further species of the second aspect of the invention are represented by the following structures:




wherein: R9 is selected from the group consisting of radicals represented by the following structures:








Another aspect of the invention is directed to a method for the modulation of the catalytic activity of a protein kinase with a compound or salt of any one of the compounds of Formulas (I-III). In a preferred mode, the protein kinase is selected from the group consisting of VEGF receptors and PDGF receptors.



BRIEF DESCRIPTION OF FIGURES
FIG. 1 illustrates a scheme that is used for the synthesis of the 3-alkoxy-4-acylaminoamide derivatives starting from methyl 3-hydroxy-4-aminobutanoate hydrochlorides and the activated acylating agent 1-3.
FIG. 2 illustrates a scheme that is used for the synthesis of the 2-alkoxy-3-acylaminoamide derivatives starting from methyl 2-hydroxy-3-aminopropionate hydrochlorides and the activated acylating agent 1-3.
FIG. 3 illustrates a scheme that is used for the synthesis of the (2S)-2-alkoxy-4-acylamino-amide derivatives starting from methyl (2S)-2-hydroxy-4-aminobutanoate hydrochloride and the activated acylating agent 1-3.



DETAILED DESCRIPTION
Examples 1-8
The synthesis of acids (1-4) and amides (1-5) is shown in FIG. 1. Variations from this general synthetic procedure can be understood and carried out by those skilled in the art. Thus, the compounds of the present invention can be synthesized by those skilled in the art.
Example 1
4-({5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carbonyl}-amino)-3-methoxy-butyric acid




To a suspension of methyl 4-amino-3-hydroxybutyrate (1.0 equiv, which was prepared by refluxing the free amino acid in dry methanol with 1.2 equiv HCl) and DIEA (5 equiv) in DCM, Mmt-Cl (1.1 equiv) was added portion-wise at 25° C. After stirring overnight, the DCM was removed under reduced pressure. The residue was suspended in ethyl acetate, washed with brine (3×), dried over anhydrous Na2SO4. The ethyl acetate was then removed, and the residue was dried overnight under high vacuum, and subjected to flash chromatography to give compound 1-1. To a solution of compound 1-1 in dry DMF, NaH (1.5 equiv) was added under argon. After stirring at 25° C. for 1 h, Mel (5 equiv) was added to the solution, and the resulting suspension was gently shaken at 25° C. overnight. The DMF was removed under vacuum; the residue was suspended in ethyl acetate, washed with brine (3×), and dried over anhydrous Na2SO4. After the ethyl acetate was removed via evaporation the resulting residue was treated with 1% TFA in DCE/DCM for 30 min. The organic solvents were then removed under reduced pressure, and the resulting residue was triturated with hexane (3×) to obtain the free amino acid 1-2. This amino acid was used directly in the next step without any purification and characterization. Thus, to a solution of 1-2 (2 equiv) and DIEA (5 equiv) in DMF, compound 1-3 (1 equiv) was added at 25° C. After stirring for 30 min (LC-MS show the complete consumption of 1-3), KOH (5 equiv) in water was added, and the solution was stirred for another 2 h (LC-MS demonstrated a complete hydrolysis). The solvents were removed under reduced pressure, and HCl (1N, excess) was added to give a precipitate. This precipitate was collected and washed (by water) by filtration, dried under high vacuum to give the title compound (95% based on compound 1-3). LC-MS: single peak at 254 nm, MH+ calcd. for C21H22FN3O5: 416, obtained: 416. 1H-NMR (DMSO-d6, 400 MHz), δ 13.67 (s, 1H), 12.18 (b, 1H), 10.90 (s, 1H), 7.75 (dd, J=2.4 Hz, J=9.6 Hz, 1H), 7.71 (s, 1H), 7.64 (t, J=6.0 Hz, 1H), 6.92 (m, 1H) 6.83 (dd, J=4.8 Hz, J=8.4 Hz, 1H), 3.73 (m, 1H), 3.43-3.31 (m, 2H), 3.22 (s, 3H), 2.52-2.35 (m, 2H), 2.43 (s, 3H), 2.41 (s, 3H).
Example 2
3-Ethoxy-4-({5-[5-fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carbonyl}-amino)-butyric acid




A similar route as that for the synthesis of Example 1 was used to prepare the title compound. Iodoethane was used instead of iodomethane to obtain the 3-ethoxy compound (9.7% based on compound 1-3). LC-MS: single peak at 254 nm, MH+ calcd. for C22H24FN3O5: 430, obtained: 430.
Examples 3-8
The general procedure for the synthesis of amides (1-5): An amine (2 equiv) was added to a solution of the acid (1-4), HATU (1.05 mmol), and DIEA (5 equiv) in DMF (5 mL). After the solution was stirred at 25° C. for 2 h, aqueous HCl (2 mL, 1N) was added. This solution was subjected to preparative HPLC to obtain the pure amide product, which was subsequently characterized by LC-MS and NMR spectroscopy.
Example 3
5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid (3-dimethylcarbamoyl-2-ethoxy-propyl)-amide




Preparative HPLC gave 13 mg of the title compound (41%) from 30 mg starting material (acid). LC-MS: single peak at 254 nm, MH+ calcd. for C24H29FN4O4: 457, obtained: 457. 1H-NMR (DMSO-d6, 400 MHz), δ 13.68 (s, 1H), 10.89 (s, 1H), 7.76 (dd, J=2.4 Hz, 9.2 Hz, 1H), 7.72 (s, 1H), 7.60 (t, J=6.0 Hz, 1H), 6.92 (m, 1H) 6.83 (dd, J=4.8 Hz, 8.4 Hz, 1H), 3.89 (m, 1H), 3.58-3.45 (m, 2H), 3.40-3.27 (m, 2H, buried in water signals), 2.97 (s, 3H), 2.82 (s, 3H), 2.43 (s, 3H), 2.41 (s, 3H), 1.07 (t, J=7.2 Hz, 3H).
Example 4
5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid (3-dimethylcarbamoyl-2-methoxy-propyl)-amide




Preparative HPLC gave 46 mg of the title compound (36%) from 120 mg starting material (acid). LC-MS: single peak at 254 nm, MH+ calcd. for C23H27FN4O4: 443, obtained: 443. 1H-NMR (DMSO-d6, 400 MHz), δ 13.68 (s, 1H), 10.89 (s, 1H), 7.76 (dd, J=2.4 Hz, 9.2 Hz, 1H), 7.71 (s, 1H), 7.63 (t, J=5.6 Hz, 1H), 6.92 (m, 1H), 6.83 (dd, J=4.8 Hz, 8.8 Hz, 1H), 3.78 (m, 1H), 3.42-3.31 (m, 2H), 3.30 (s, 3H), 2.97 (s, 3H), 2.82 (s, 3H), 2.43 (s, 3H), 2.41 (s, 3H), 2.63-2.43 (m, 2H).
Example 5
5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid (2-methoxy-4-morpholin-4-yl-4-oxo-butyl)-amide




Preparative HPLC gave 48 mg of the title compound (37%) from 110 mg starting material (acid). LC-MS: single peak at 254 nm, MH+ calcd. for C25H29FN4O6: 485, obtained: 485. 1H-NMR (DMSO-d6, 400 MHz), δ 13.68 (s, 1H), 10.89 (s, 1H), 7.76 (dd, J=2.4 Hz, 9.2 Hz, 1H), 7.71 (s, 1H), 7.63 (t, J=5.6 Hz, 1H), 6.92 (m, 1H), 6.83 (dd, J=4.8 Hz, 8.4 Hz, 1H), 3.80 (m, 1H), 3.55 (m, 4H), 3.47 (m, 4H), 3.38 (m, 2H), 3.31 (s, 3H), 2.60 (m, 1H), 2.45 (m, 1H), 2.43 (s, 3H), 2.41 (s, 3H).
Example 6
5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid [4-(4-hydroxy-piperidin-1-yl)-2-methoxy-4-oxo-butyl]-amide




Preparative HPLC gave 20 mg of the title compound (33%) from 50 mg starting material (acid). LC-MS: single peak at 254 nm, MH+ calcd. for C26H31FN4O5: 499, obtained: 499. 1H-NMR (DMSO-d6, 400 MHz), δ 13.68 (s, 1H), 10.89 (s, 1H), 7.76 (dd, J=2.4 Hz, 9.6 Hz, 1H), 7.72 (s, 1H), 7.63 (t, J=5.6 Hz, 1H), 6.93 (m, 1H), 6.83 (dd, J=4.4 Hz, 8.4 Hz, 1H), 3.92 (m, 1H), 3.78 (m, 1H), 3.68 (b, 1H), 3.30 (s, 3H), 3.15 (m, 1H), 3.01 (m, 1H), 2.60 (m, 1H), 2.55 (m, 2H), 2.50 (m, 1H), 2.45 (m, 2H), 2.43 (s, 3H), 2.41 (s, 3H), 1.70 (m, 2H), 1.30 (m, 2H).
Example 7
5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid (2-methoxy-4-oxo-4-pyrrolidin-1-yl-butyl)-amide




Preparative HPLC gave 40 mg of the title compound (32%) from 110 mg starting material (acid). LC-MS: single peak at 254 nm, MH+ calcd. for C25H29FN4O4: 469, obtained: 469. 1H-NMR (DMSO-d6, 400 MHz), δ 13.68 (s, 1H), 10.89 (s, 1H), 7.76 (dd, J=2.4 Hz, 9.6 Hz, 1H), 7.71 (s, 1H), 7.63 (t, J=5.6 Hz, 1H), 6.93 (m, 1H), 6.83 (dd, J=4.8 Hz, 8.8 Hz, 1H), 3.82 (m, 1H), 3.50-3.25 (m, 6H), 3.30 (s, 3H), 2.55-2.45 (m, 2H), 2.43 (s, 3H), 2.41 (s, 3H), 1.86 (m, 2H), 1.76 (m, 2H).
Example 8
5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid[2-methoxy-3-(methoxy-methyl-carbamoyl)-propyl]-amide




Preparative HPLC gave 15 mg of the title compound (15%) from 80 mg starting material (acid). LC-MS: single peak at 254 nm, MH+ calcd. for C23H27FN4O5: 459, obtained: 459. 1H-NMR (DMSO-d6, 400 MHz), δ 13.68 (s, 1H), 10.90 (s, 1H), 7.76 (dd, J=2.4 Hz, 9.2 Hz, 1H), 7.72 (s, 1H), 7.68 (t, J=6.0 Hz, 1H), 6.93 (m, 1H), 6.84 (dd, J=4.4 Hz, 8.4 Hz, 1H), 3.79 (m, 1H), 3.66 (s, 3H), 3.50-3.35 (m, 2H), 3.31 (s, 3H), 3.13 (s, 3H), 2.55-2.45 (m, 2H), 2.43 (s, 3H), 2.41 (s, 3H).
Examples 9-15
The synthesis of acids (2-3) and amides (2-4) is shown in FIG. 2. Variations from this general synthetic procedure can be understood and carried out by those skilled in the art. Thus, the compounds of the present invention can be synthesized by those skilled in the art.
Example 9
3-({5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carbonyl}-amino)-2-methoxy-propionic acid




To a suspension of methyl 3-amino-2-hydroxypropionate (1.0 equiv, which was prepared by refluxing the free amino acid isoserine in dry methanol with 1.2 equiv HCl) and DIEA (5 equiv) in DCM, Mmt-Cl (1.1 equiv) was added portion-wise at 25° C. After stirring overnight, the DCM was removed under reduced pressure. The residue was suspended in ethyl acetate, washed with brine (3×), dried over anhydrous Na2SO4. The ethyl acetate was then removed, and the residue was dried overnight under high vacuum, and subjected to flash chromatography to give compound 2-1. To a solution of compound 2-1 in dry DMF, NaH (1.5 equiv) was added under argon. After stirring at 25° C. for 1 h, Mel (5 equiv) was added to the solution, and the resulting suspension was gently stirred at 25° C. overnight. The DMF was removed under vacuum; the residue was suspended in ethyl acetate, washed with brine (3×), and dried over anhydrous Na2SO4. After the ethyl acetate was removed via evaporation the resulting residue was treated with 1% TFA in DCE/DCM for 30 min. The organic solvents were then removed under reduced pressure, and the resulting residue was triturated with hexane (3×) to obtain the free amino acid 2-2. This amino acid was used directly in the next step without any purification and characterizations. Thus, to a solution of 2-2 (2 equiv) and DIEA (5 equiv) in DMF, compound 1-3 (1 equiv) was added at 25° C. After stirring for 30 min (LC-MS show the complete consumption of 1-3), KOH (5 equiv) in water was added, and the solution was stirred for another 2 h (LC-MS demonstrated a complete hydrolysis). The solvents were removed under reduced pressure, and HCl (1N, excess) was added to give a precipitate. This precipitate was collected by filtration, washed with water and dried under high vacuum to give the title compound (99% based on compound 1-3). LC-MS: single peak at 254 nm, MH+ calcd. for C20H20FN3O5: 402, obtained: 402. 1H-NMR (DMSO-d6, 400 MHz), δ 13.67 (s, 1H), 12.83 (b, 1H), 10.90 (s, 1H), 7.76 (dd, J=2.4 Hz, J=9.6 Hz, 1H), 7.71 (s, 1H), 7.69 (t, J=6.0 Hz, 1H), 6.92 (m, 1H), 6.82 (dd, J=4.8 Hz, J=8.4 Hz, 1H), 3.90 (m, 1H), 3.55 (m, 1H), 3.41 (m, 1H), 3.32 (s, 3H), 2.42 (s, 3H), 2.40 (s, 3H).
Example 10
2-Ethoxy-3-({5-[5-fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carbonyl}-amino)-propionic acid




A similar route as that for the synthesis of Example 9 was used to prepare the title compound. Iodoethane was used instead of iodomethane to obtain the 2-ethoxy compound (38% based on compound 1-3). LC-MS: single peak at 254 nm, MH+ calcd. for C21H22FN4O5: 416, obtained: 416. 1H-NMR (DMSO-d6, 400 MHz), δ 13.67 (s, 1H), 12.80 (b, 1H), 10.89 (s, 1H), 7.76 (dd, J=2.4 Hz, J=9.2 Hz, 1H), 7.71 (s, 1H), 7.68 (t, J=6.0 Hz, 1H), 6.92 (m, 1H), 6.83 (dd, J=4.8 Hz, J=8.4 Hz, 1H), 4.00 (dd, J=5.2 Hz, J=7.6 Hz, 1H), 3.58 (m, 2H), 3.41 (m, 2H), 2.43 (s, 3H), 2.41 (s, 3H), 1.14 (t, J=6.8 Hz, 3H).
Examples 11-15
The general procedure for the synthesis of amides (compounds 2-4): A corresponding amine (2 equiv) was added to a solution of the acid (compound 2-3), HATU (1.05 mmol), and DIEA (5 equiv) in DMF (5 mL). After the solution was stirred at 25° C. for 2 h, aqueous HCl (2 mL, 1N) was added. This solution was subjected to preparative HPLC to obtain the pure amide product, which was subsequently characterized by LC-MS and NMR spectroscopy.
Example 11
5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid (2-dimethylcarbamoyl-2-ethoxy-ethyl)-amide




Preparative HPLC gave 46 mg of the title compound (62%) from 70 mg starting material (acid). LC-MS: single peak at 254 nm, MH+ calcd. for C23H27FN4O4: 443, obtained: 443.
Example 12
5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid (2-ethoxy-3-morpholin-4-yl-3-oxo-propyl)-amide




Preparative HPLC gave 40 mg of the title compound (49%) from 70 mg starting material (acid). LC-MS: single peak at 254 nm, MH+ calcd. for C25H29FN4O5: 485, obtained: 485. 1H-NMR (DMSO-d6, 400 MHz), δ 13.67 (s, 1H), 10.89 (s, 1H), 7.76 (dd, J=2.4 Hz, J=9.6 Hz, 1H), 7.71 (s, 1H), 7.70 (m, 1H), 6.93 (m, 1H), 6.83 (dd, J=4.8 Hz, J=8.4 Hz, 1H), 4.40 (m, 1H), 3.73-3.35 (m, 12H), 2.43 (s, 3H) 2.41 (s, 3H), 1.12 (t, J=7.2 Hz, 3H).
Example 13
5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid (2-dimethylcarbamoyl-2-methoxy-ethyl)-amide




Preparative HPLC gave 93 mg of the title compound (76%) from 115 mg starting material (acid). LC-MS: single peak at 254 nm, MH+ calcd. for C22H25FN4O4: 429, obtained: 429. 1H-NMR (DMSO-d6, 400 MHz), δ 13.68 (s, 1H), 10.90 (s, 1H), 7.75 (dd, J=2.4 Hz, J=9.6 Hz, 1H), 7.72 (m, 1H), 7.71 (s, 1H), 6.93 (m, 1H), 6.83 (dd, J=4.8 Hz, J=8.8 Hz, 1H), 4.40 (dd, J=4.8 Hz, J=7.2 Hz, 1H), 3.50 (m, 1H), 3.32 (m, 1H), 3.24 (s, 3H), 3.10 (s, 3H), 2.86 (s, 3H), 2.43 (s, 3H), 2.41 (s, 3H).
Example 14
5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid (2-methoxy-3-morpholin-4-yl-3-oxo-propyl)-amide




Preparative HPLC gave 98 mg of the title compound (73%) from 115 mg starting material (acid). LC-MS: single peak at 254 nm, MH+ calcd. for C24H27FN4O5: 471, obtained: 471. 1H-NMR (DMSO-d6, 400 MHz), δ 13.67 (s, 1H), 10.89 (s, 1H), 7.75 (dd, J=2.4 Hz, J=9.6 Hz, 1H), 7.71 (s, 1H), 7.70 (m, 1H), 6.92 (m, 1H), 6.83 (dd, J=4.8 Hz, J=8.8 Hz, 1H), 4.34 (dd, J=4.8 Hz, J=7.2 Hz, 1H), 3.85-3.30 (m, 10H), 3.26 (s, 3H), 2.44 (s, 3H), 2.42 (s, 3H).
Example 15
5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid (2-methoxy-3-oxo-3-pyrrolidin-1-yl-propyl)-amide




Preparative HPLC gave 86 mg of the title compound (66%) from 115 mg starting material (acid). LC-MS: single peak at 254 nm, MH+ calcd. for C24H27FN4O4: 455, obtained: 455. 1H-NMR (DMSO-d6, 400 MHz), δ 13.67 (s, 1H), 10.89 (s, 1H), 7.76 (dd, J=2.4 Hz, J=9.6 Hz, 1H), 7.70 (m, 1H), 7.71 (s, 1H), 6.93 (m, 1H), 6.83 (dd, J=4.4 Hz, J=8.4 Hz, 1H), 4.20 (dd, J=5.2 Hz, J=7.2 Hz, 1H), 3.60-3.47 (m, 3H), 3.43-3.28 (m, 3H), 3.26 (s, 3H), 2.43 (s, 3H), 2.40 (s, 3H), 1.88 (m, 2H), 1.78 (m, 2H).
Examples 16-315
Still further amide examples are shown in the following table:


















 








 








 








 








 








 









Ex#
Core
R












16
I
a


17
I
b


18
I
c


19
I
d


20
I
e


21
I
f


22
I
g


23
I
h


24
I
i


25
I
j


26
I
k


27
I
l


28
I
m


29
I
n


30
I
o


31
I
p


32
I
q


33
I
r


34
I
s


35
I
t


36
I
u


37
I
v


38
I
w


39
I
x


40
I
y


41
I
z


42
I
aa


43
I
ab


44
I
ac


45
I
ad


46
I
ae


47
I
af


48
I
ag


49
I
ah


50
I
ai


51
I
aj


52
I
ak


53
I
al


54
I
am


55
I
an


56
I
ao


57
I
ap


58
I
aq


59
I
ar


60
I
as


61
I
at


62
I
au


63
I
av


64
I
aw


65
I
ax


66
II
a


67
II
b


68
II
c


69
II
d


70
II
e


71
II
f


72
II
g


73
II
h


74
II
i


75
II
j


76
II
k


77
II
l


78
II
m


79
II
n


80
II
o


81
II
p


82
II
q


83
II
r


84
II
s


85
II
t


86
II
u


87
II
v


88
II
w


89
II
x


90
II
y


91
II
z


92
II
aa


93
II
ab


94
II
ac


95
II
ad


96
II
ae


97
II
af


98
II
ag


99
II
ah


100
II
ai


101
II
aj


102
II
ak


103
II
at


104
II
am


105
II
an


106
II
ao


107
II
ap


108
II
aq


109
II
ar


110
II
as


111
II
at


112
II
au


113
II
av


114
II
aw


115
II
ax


116
III
a


117
III
b


118
III
c


119
III
d


120
III
e


121
III
f


122
III
g


123
III
h


124
III
i


125
III
j


126
III
k


127
III
l


128
III
m


129
III
n


130
III
o


131
III
p


132
III
q


133
III
r


134
III
s


135
III
t


136
III
u


137
III
v


138
III
w


139
III
x


140
III
y


141
III
z


142
III
aa


143
III
ab


144
III
ac


145
III
ad


146
III
ae


147
III
af


148
III
ag


149
III
ah


150
III
ai


151
III
aj


152
III
ak


153
III
al


154
III
am


155
III
an


156
III
ao


157
III
ap


158
III
aq


159
III
ar


160
III
as


161
III
at


162
III
au


163
III
av


164
III
aw


165
III
ax


166
IV
a


167
IV
b


168
IV
c


169
IV
d


170
IV
e


171
IV
f


172
IV
g


173
IV
h


174
IV
i


175
IV
j


176
IV
k


177
IV
l


178
IV
m


179
IV
n


180
IV
o


181
IV
p


182
IV
q


183
IV
r


184
IV
s


185
IV
t


186
IV
u


187
IV
v


188
IV
w


189
IV
x


190
IV
y


191
IV
z


192
IV
aa


193
IV
ab


194
IV
ac


195
IV
ad


196
IV
ae


197
IV
af


198
IV
ag


199
IV
ah


200
IV
ai


201
IV
aj


202
IV
ak


203
IV
al


204
IV
am


205
IV
an


206
IV
ao


207
IV
ap


208
IV
aq


209
IV
ar


210
IV
as


211
IV
at


212
IV
au


213
IV
av


214
IV
aw


215
IV
ax


216
V
a


217
V
b


218
V
c


219
V
d


220
V
e


221
V
f


222
V
g


223
V
h


224
V
i


225
V
j


226
V
k


227
V
l


228
V
m


229
V
n


230
V
o


231
V
p


232
V
q


233
V
r


234
V
s


235
V
t


236
V
u


237
V
v


238
V
w


239
V
x


240
V
y


241
V
z


242
V
aa


243
V
ab


244
V
ac


245
V
ad


246
V
ae


247
V
af


248
V
ag


249
V
ah


250
V
ai


251
V
aj


252
V
ak


253
V
al


254
V
am


255
V
an


256
V
ao


257
V
ap


258
V
aq


259
V
ar


260
V
as


261
V
at


262
V
au


263
V
av


264
V
aw


265
V
ax


266
VI
a


267
VI
b


268
VI
c


269
VI
d


270
VI
e


271
VI
f


272
VI
g


273
VI
h


274
VI
i


275
VI
j


276
VI
k


277
VI
l


278
VI
m


279
VI
n


280
VI
o


281
VI
p


282
VI
q


283
VI
r


284
VI
s


285
VI
t


286
VI
u


287
VI
v


288
VI
w


289
VI
x


290
VI
y


291
VI
z


292
VI
aa


293
VI
ab


294
VI
ac


295
VI
ad


296
VI
ae


297
VI
af


298
VI
ag


299
VI
ah


300
VI
ai


301
VI
aj


302
VI
ak


303
VI
al


304
VI
am


305
VI
an


306
VI
ao


307
VI
ap


308
VI
aq


309
VI
ar


310
VI
as


311
VI
at


312
VI
au


313
VI
av


314
VI
aw


315
VI
ax









In the above table, R9 is selected from the following radicals:













These amide examples 16-315 can be made by those skilled in the art following the above procedure and/or known procedures.
Examples 316-320
The synthesis of acids (3-3) and amides (3-4) is shown in FIG. 3. Variations from this general synthetic procedure can be understood and carried out by those skilled in the art. Thus, the compounds of the present invention can be synthesized by those skilled in the art.
Example 316
(S)-4-({5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carbonyl}-amino)-2-methoxy-butyric acid




To a suspension of methyl 4-amino-2-hydroxybutyrate (1.0 equiv, which was prepared by refluxing the free amino acid in dry methanol with 1.2 equiv HCl) and DIEA (5 equiv) in DCM, Mmt-Cl (1.1 equiv) was added portion-wise at 25° C. After stirring overnight, the DCM was removed under reduced pressure. The residue was suspended in ethyl acetate, washed with brine (3×), dried over anhydrous Na2SO4. The ethyl acetate was then removed, and the residue was dried overnight under high vacuum, and subjected to flash chromatography to give compound 3-1. To a solution of compound 3-1 in dry DMF, NaH (1.5 equiv) was added under argon. After stirring at 25° C. for 1 h, Mel (5 equiv) was added to the solution, and the resulting suspension was gently stirred at 25° C. overnight. The DMF was removed under vacuum; the residue was suspended in ethyl acetate, washed with brine (3×), and dried over anhydrous Na2SO4. After the ethyl acetate was removed via evaporation the resulting residue was treated with 1% TFA in DCE/DCM for 30 min. The organic solvents were then removed under reduced pressure, and the resulting residue was triturated with hexane (3×) to obtain the free amino acid 3-2. This amino acid was used directly in the next step without any purification and characterization. Thus, to a solution of 3-2 (2 equiv) and DIEA (5 equiv) in DMF, compound 1-3 (1 equiv) was added at 25° C. After stirring for 30 min (LC-MS show the complete consumption of 1-3), KOH (5 equiv) in water was added, and the solution was stirred for another 2 h (LC-MS demonstrated a complete hydrolysis). The solvents were removed under reduced pressure, and HCl (1N, excess) was added to give a precipitate. This precipitate was collected and washed (by water) by filtration, dried under high vacuum to give the title compound (97% based on compound 1-3). LC-MS: single peak at 254 nm, MH+ calcd. for C21H22FN3O5: 416, obtained: 416. 1H-NMR (DMSO-d6, 400 MHz), δ 13.68 (s, 1H), 12.80 (b, 1H), 10.90 (s, 1H), 7.76 (dd, J=2.4 Hz, J=9.6 Hz, 1H), 7.71 (s, 1H), 7.65 (t, J=5.6 Hz, 1H), 6.93 (m, 1H), 6.83 (dd, J=4.8 Hz, J=8.4 Hz, 1H), 3.77 (dd, J=4.0 Hz, J=8.8 Hz, 1H), 3.40-3.30 (m, 2H), 3.30 (s, 3H), 2.43 (s, 3H), 2.41 (s, 3H), 1.92 (m, 1H), 1.78 (m, 1H).
Example 317
(S)-2-Ethoxy-4-({5-[5-fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carbonyl}-amino)-butyric acid




A similar route as that for the synthesis of Example 316 was used to prepare the title compound. Iodoethane was used instead of iodomethane to obtain the 2-ethoxy compound (84% based on compound 1-3). LC-MS: single peak at 254 nm, MH+ calcd. for C22H24FN3O5: 430, obtained: 430. 1H-NMR (DMSO-d6, 400 MHz), δ 13.68 (s, 1H), 12.70 (b, 1H), 10.89 (s, 1H), 7.76 (dd, J=2.4 Hz, J=9.6 Hz, 1H), 7.71 (s, 1H), 7.66 (t, J=5.6 Hz, 1H), 6.93 (m, 1H), 6.83 (dd, J=4.8 Hz, J=8.4 Hz, 1H), 3.85 (dd, J=4.0 Hz, J=8.4 Hz, 1H), 3.58 (m, 1H), 3.40-3.25 (m, 3H), 2.43 (s, 3H), 2.41 (s, 3H), 1.92 (m, 1H), 1.77 (m, 1H), 1.13 (t, J=7.2 Hz, 3H).
Example 318-320
The general procedure for the synthesis of amides (compounds 3-4): A corresponding amine (2 equiv) was added to a solution of the acid (compound 3-3), HATU (1.05 mmol), and DIEA (5 equiv) in DMF (5 mL). After the solution was stirred at 25° C. for 2 h, aqueous HCl (2 mL, 1N) was added. This solution was subjected to preparative HPLC to obtain the pure amide product, which was subsequently characterized by LC-MS and NMR spectroscopy.
Example 318
5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid ((S)-3-dimethylcarbamoyl-3-methoxy-propyl)-amide




Preparative HPLC gave 37 mg of the title compound (58%) from 60 mg starting material (acid). LC-MS: single peak at 254 nm, MH+ calcd. for C23H27FN4O4: 443, obtained: 443. 1H-NMR (DMSO-d6, 400 MHz), δ 13.68 (s, 1H), 10.89 (s, 1H), 7.76 (dd, J=2.4 Hz, J=9.6 Hz, 1H), 7.72 (s, 1H), 7.65 (t, J=5.6 Hz, 1H), 6.93 (m, 1H), 6.83 (dd, J=4.8 Hz, J=8.4 Hz, 1H), 4.20 (dd, J=4.0 Hz, J=8.0 Hz, 1H), 3.30 (m, 2H), 3.27 (s, 3H), 3.04 (s, 3H), 2.88 (s, 3H), 2.43 (s, 3H), 2.41 (s, 3H), 1.80 (m, 2H).
Example 319
5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid ((S)-3-methoxy-4-morpholin-4-yl-4-oxo-butyl)-amide




Preparative HPLC gave 32 mg of the title compound (46%) from 60 mg starting material (acid). LC-MS: single peak at 254 nm, MH+ calcd. for C25H29FN4O5: 485, obtained: 485. 1H-NMR (DMSO-d6, 400 MHz), δ 13.68 (s, 1H), 10.89 (s, 1H), 7.76 (dd, J=2.4 Hz, J=9.6 Hz, 1H), 7.72 (s, 1H), 7.65 (t, J=5.6 Hz, 1H), 6.93 (m, 1H), 6.83 (dd, J=4.8 Hz, J=8.4 Hz, 1H), 4.19 (dd, J=4.8 Hz, J=8.0 Hz, 1H), 3.57 (m, 6H), 3.47 (m, 2H), 3.28 (m, 2H), 3.23 (s, 3H), 2.44 (s, 3H), 2.41 (s, 3H), 1.79 (m, 2H).
Example 320
5-[5-Fluoro-2-oxo-1,2-dihydro-indol-(3Z)-ylidenemethyl]-2,4-dimethyl-1H-pyrrole-3-carboxylic acid ((S)-3-dimethylcarbamoyl-3-ethoxy-propyl)-amide




Preparative HPLC gave 67 mg of the title compound (57%) from 120 mg starting material (acid). LC-MS: single peak at 254 nm, MH+ calcd. for C24H29FN4O4: 457, obtained: 457. 1H-NMR (DMSO-d6, 400 MHz), δ 13.67 (s, 1H), 10.88 (s, 1H), 7.76 (dd, J=2.4 Hz, J=9.6 Hz, 1H), 7.71 (s, 1H), 7.56 (m, 1H), 6.91 (m, 1H), 6.83 (m, 1H), 4.25 (m, 1H), 3.45-3.25 (m, 4H), 3.03 (s, 3H), 2.83 (s, 3H), 2.43 (s, 3H), 2.41 (s, 3H), 1.80 (m, 2H).
The compounds described herein are presently representative of preferred embodiments, are exemplary, and are not intended as limitations on the scope of the invention. It will be readily apparent to one skilled in the art that varying substitutions and modifications may be made to the invention disclosed herein without departing from the scope and spirit of the invention.
VEGFR Biochemical Assay
The compounds were assayed for biochemical activity by Upstate Ltd at Dundee, United Kingdom, according to the following procedure. In a final reaction volume of 25 μl, KDR (h) (5-10 mU) is incubated with 8 mM MOPS pH 7.0, 0.2 mM EDTA, 0.33 mg/ml myelin basic protein, 10 mM MgAcetate and [γ-33P-ATP] (specific activity approx. 500 cpm/pmol, concentration as required). The reaction is initiated by the addition of the MgATP mix. After incubation for 40 minutes at room temperature, the reaction is stopped by the addition of 5 μl of a 3% phosphoric acid solution. 10 μl of the reaction is then spotted onto a P30 filtermat and washed three times for 5 minutes in 75 mM phosphoric acid and once in methanol prior to drying and scintillation counting.
Compounds of the present invention were tested in this assay and exhibited IC50 between 1-5,000 nM.
PDGFR Phosphorylation Assay
NIH3T3 cells are plated in a 96 well plate in DMEM+10% FBS. Following cell attachment the cells are serum starved overnight before adding the chemical test compounds to a final concentration of 0.1% DMSO. Following a 1 hour incubation at 37° C. cells are removed from the incubator and allowed to cool to RT for 20 min before stimulation with PDGF-BB for 15 min at RT. Cells are placed on ice for 5 min, the media removed and the cells are lysed with 100 μwell lysis buffer for 1 hour at 4° C. Plates are spun at 2000 rpm for 30 min at 4° C. and solubilized phosphorylated PDGFR is quantitated by ELISA.
High binding microplates are incubated overnight at RT with anti-mouse PDGFR-b capture-antibody in PBS, washed with PBS+0.05% Tween20 and blocked for 4 h at RT with PBS+1% BSA and washed again. 100 μL lysate/well is incubated overnight at 4° C. Plates are washed and wells are incubated with 100 μL/well of mouse anti-phosphotyrosine-HRP antibody for 2 h at 37° C. Plates are washed again and colorimetric detection is performed using TMB as substrate.
Most of the compounds in this invention showed IC50 of less than 1 μM in this assay.
VEGFR Phosphorylation Assay
NIHT3T cells overexpressing mouse VEGFR-2 (FLK-1) are plated in a 96 well plate in DMEM+10% FBS. Following cell attachment for 4 hours the cells are serum starved overnight before adding the chemical test compounds to a final concentration of 0.1% DMSO. Following a 1 hour incubation at 37° C. cells are stimulated for 15 min at 37° C. with VEGF165. Cells are placed on ice for 5 min, the media removed, washed once with ice cold PBS and the cells are lysed with 50 μL/well lysis buffer for 1 hour at 4° C. Plates are spun for 10 min at 2000 rpm at 4° C. and solubilized phosphorylated VEGFR is quantitated by ELISA.
High binding microplates are incubated overnight at room temperature with VEGFR antibody in 50 μL PBS, washed with PBS+0.05% Tween20 and blocked for 4 h at RT with PBS+1% BSA and washed again. 50 μL lysate/well is incubated overnight at 4° C. Plates are washed and wells are incubated with 50 μL/well of mouse anti-phosphotyrosine-HRP antibody for 2 h at 37° C. Plates are washed again and colorimetric detection is performed using TMB as substrate.
Most of the compounds in this invention showed IC50 of less than 1 μM in this assay.
Cellular Assay: HUVEC: VEGF Induced Proliferation
The compounds were assayed for cellular activity in the VEGF induced proliferation of HUVEC cells. HUVEC cells (Cambrex, CC-2517) were maintained in EGM (Cambrex, CC-3124) at 37° C. and 5% CO2. HUVEC cells were plated at a density 5000 cells/well (96 well plate) in EGM. Following cell attachment (1 hour) the EGM-medium was replaced by EBM (Cambrex, CC-3129) +0.1% FBS (ATTC, 30-2020) and the cells were incubated for 20 hours at 37° C. The medium was replaced by EBM +1% FBS, the compounds were serial diluted in DMSO and added to the cells to a final concentration of 0-5,000 nM and 1% DMSO. Following a 1 hour pre-incubation at 37° C. cells were stimulated with 10 ng/ml VEGF (Sigma, V7259) and incubated for 45 hours at 37° C. Cell proliferation was measured by BrdU DNA incorporation for 4 hours and BrdU label was quantitated by ELISA (Roche kit, 16472229) using 1M H2SO4 to stop the reaction. Absorbance was measured at 450 nm using a reference wavelength at 690 nm.
DETAILED DESCRIPTION OF FIGURES
FIG. 1 shows a scheme that is used for the synthesis of the 3-alkoxy-4-acylaminoamide derivatives starting from methyl 3-hydroxy-4-aminobutanoate hydrochlorides and the activated acylating agent 1-3. The amino ester hydrochloride starting material was prepared by refluxing the free amino acid in anhydrous methanol in the presence of 1.2 eq of HCl. The amino group was protected as its monomethoxytrityl derivative in the presence of the secondary hydroxyl group to give the neutral hydroxy ester 1-1. The hydroxyl group was alkylated using methyl- or ethyl iodide to form the protected amino alkoxy ester. The Mmt group was removed in 1% trifluoroacetic acid leaving the amino hydrochloride or trifluoracetate compound 1-2. This compound was quickly acylated with the preformed acylating agent 1-3 and the methyl ester was hydrolyzed by potassium hydroxide in water/DMF to give 1-4. The free acid was then exposed to HATU, amine and diisopropylethyl amine in DMF to give the alkoxy amide 1-5.
FIG. 2 shows a scheme that is used for the synthesis of the 2-alkoxy-3-acylaminoamide derivatives starting from methyl 2-hydroxy-3-aminopropionate hydrochlorides and the activated acylating agent 1-3. The amino ester hydrochloride starting material was prepared by refluxing the free amino acid in anhydrous methanol in the presence of 1.2 eq of HCl. The amino group was protected as its monomethoxytrityl derivative in the presence of the secondary hydroxyl group to give 2-1. The hydroxyl group was alkylated using methyl- or ethyl iodide to form the protected amino alkoxy ester. The Mmt group was removed in 1% trifluoroacetic acid leaving the amino hydrochloride or trifluoracetate compound 2-2. This compound was quickly acylated with the preformed acylating agent 1-3 and the methyl ester was hydrolyzed by potassium hydroxide in water/DMF to give 2-4. The free acid was then exposed to HATU, amine and diisopropylethyl amine in DMF to give the alkoxy amide 2-5.
FIG. 3 shows a scheme that is used for the synthesis of the (2S)-2-alkoxy-4-acylamino-amide derivatives starting from methyl (2S)-2-hydroxy-4-aminobutanoate hydrochloride and the activated acylating agent 1-3. The amino ester hydrochloride starting material was prepared by refluxing the free amino acid in anhydrous methanol in the presence of 1.2 eq of HCl. The amino group was protected as its monomethoxytrityl derivative in the presence of the secondary hydroxyl group to give the neutral hydroxy ester 3-1. The hydroxyl group was alkylated using methyl- or ethyl iodide to form the protected amino alkoxy ester. The Mmt group was removed in 1% trifluoroacetic acid leaving the amino hydrochloride or trifluoracetate compound 3-2. This compound was quickly acylated with the preformed acylating agent 1-3 and the methyl ester was hydrolyzed by potassium hydroxide in water/DMF to give 3-4. The free acid was then exposed to HATU, amine and diisopropylethyl amine in DMF to give the alkoxy amide 3-5.

## Claims

1. A compound represented by Formula (I):




wherein:
R1 is selected from the group consisting of hydrogen, halo, (C1-C6) alkyl, (C3-C8) cycloalkyl, (C1-C6) haloalkyl, hydroxy, (C1-C6) alkoxy, amino, (C1-C6) alkylamino, amide, sulfonamide, cyano, substituted or unsubstituted (C6-C10) aryl;
R2 is selected from the group consisting of hydrogen, halo, (C1-C6) alkyl, (C3-C8) cycloalkyl, (C1-C6) haloalkyl, hydroxy, (C1-C6) alkoxy, (C2-C8) alkoxyalkyl, amino, (C1-C6) alkylamino, (C6-C10) arylamino;
R3 is selected from the group consisting of hydrogen, (C1-C6) alkyl, (C6-C10) aryl, (C5-C10) heteroaryl, and amide;
R4, R5, R6 and R8 are independently selected from the group consisting of hydrogen and (C1-C6) alkyl;
R7 is (C1-C6) alkyl;
R9 is selected from the group consisting of hydroxy, (C1-C6) O-alkyl, (C3-C8) O-cycloalkyl, and NR10R11; where R10 and R11 are independently selected from the group consisting of hydrogen, (C1-C6) alkyl, (C1-C6) hydroxyalkyl, (C2-C6) dihydroxyalkyl, (C1-C6) alkoxy, (C2-C6) alkyl carboxylic acid, (C1-C6) alkyl phosphonic acid, (C1-C6) alkyl sulfonic acid, (C2-C6) hydroxyalkyl carboxylic acid, (C1-C6) alkyl amide, (C3-C8) cycloalkyl, (C5-C8) heterocycloalkyl, (C6-C8) aryl, (C5-C8) heteroaryl, (C3-C8) cycloalkyl carboxylic acid, or R10 and R11 together with N forms a (C5-C8) heterocyclic ring either unsubstituted or substituted with one or more hydroxyls, ketones, ethers, and carboxylic acids;
n is 1, 2, or 3; and
m is 0, 1, or 2;

or, a pharmaceutically acceptable salt, its tautomer, or a pharmaceutically acceptable salt of its tautomer.

2. The compound, salt, or tautomer according to claim 1 represented by Formula (II):




wherein R12 is selected from the group consisting of hydrogen, (C1-C6) alkyl, and (C3-C8) cycloalkyl.

3. The compound, salt, or tautomer according to claim 2, wherein:
R1 and R2 are independently selected from the group consisting of hydrogen and fluoro;
R3 and R4 are methyl;
R5, R6, R8, and R12 are hydrogen;
R7 is (C1-C6) alkyl;
n is 1 or 2; and
m is 0 or 1.

4. The compound, salt, or tautomer according to claim 3 selected from the group consisting of:

5. The compound salt, or tautomer according to claim 3 represented by the following structure:

6. The compound, salt, or tautomer according to claim 3 represented by the following structure:

7. The compound, salt, or tautomer according to claim 3 represented by the following structure:

8. The compound, salt, or tautomer according to claim 3 represented by the following structure:

9. The compound, salt, or tautomer according to claim 3 represented by the following structure:

10. The compound, salt, or tautomer according to claim 3 represented by the following structure:

11. A compound, salt, or tautomer according to claim 1 represented by Formula (III):

12. The compound, salt, or tautomer of claim 9, wherein:
R1 and R2 are independently selected from the group consisting of hydrogen, halo, cyano;
R3 is selected from the group consisting of hydrogen, (C1-C6) alkyl, (C6-C10) aryl, (C5-C10) heteroaryl, and amide;
R4, R5, R6 and R8 are independently selected from the group consisting of hydrogen and (C1-C6) )alkyl;
R7 is (C1-C6) alkyl;
n is 1 or 2;
m is 0 or 1; and
R10 and R11 are selected from the group consisting of hydrogen, (C1-C6) alkyl, (C1-C6) hydroxyalkyl, (C2-C6) dihydroxyalkyl, (C1-C6) alkoxy, (C2-C6) alkyl carboxylic acid, (C1-C6) alkyl phosphonic acid, (C1-C6) alkyl sulfonic acid, (C2-C6) hydroxyalkyl carboxylic acid, (C1-C6) alkyl amide, (C3-C8) cycloalkyl, (C5-C8) heterocycloalkyl, (C6-C8) aryl, (C5-C8) heteroaryl, (C4-C8) cycloalkyl carboxylic acid, or R10 and R11 together with N forms a (C5-C8) heterocyclic ring either unsubstituted or substituted with one or more hydroxyls, ketones, ethers, and carboxylic acids.

13. The compound, salt, or tautomer according to claim 12 wherein m is 0.

14. The compound, salt, or tautomer according to claim 13 selected from the group represented by the following structures:

15. The compound, salt, or tautomer according to claim 14 represented by the following structure:

16. The compound, salt, or tautomer according to claim 14 represented by the following structure:

17. The compound, salt, or tautomer according to claim 14 represented by the following structure:

18. The compound, salt, or tautomer according to claim 14 represented by the following structure:

19. The compound, salt, or tautomer according to claim 14 represented by the following structure:

20. The compound, salt, or tautomer according to claim 14 represented by the following structure:

21. The compound, salt, or tautomer according to claim 14 represented by the following structure:

22. The compound, salt, or tautomer according to claim 14 represented by the following structure:

23. The compound, salt, or tautomer according to claim 12 wherein m is 1.

24. The compound, salt, or tautomer according to claim 23 represented by the following structures:

25. The compound, salt, or tautomer according to claim 24 represented by the following structure:

26. The compound, salt, or tautomer according to claim 24 represented by the following structure:

27. The compound, salt, or tautomer according to claim 24 represented by the following structure:

28. The compound, salt, or tautomer according to claim 24 represented by the following structure:

29. The compound, salt, or tautomer according to claim 24 represented by the following structure:

30. The compound, salt, or tautomer according to claim 24 represented by the following structure:

31. The compound, salt, or tautomer according to claim 1 selected from the group represented by the following structures:







wherein: R9 is selected from the group consisting of radical represented by the following structures: