266306-18-7

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (S)-3-(4-Bromo-phenyl)-2-tert-butoxycarbonylamino-propionic acid methyl ester and 4-carbamoylphenyl boronic acid (2 eq.) were coupled in 7:2 toluene-H2O with Na2CO3 (3 eq.) and Pd(PPh3)4 (0.1 eq.). After heating for 4 hours at 80° C., the reaction mixture was purified by flash chromatography to provide (S)-2-tert-butoxycarbonylamino-3-(4′-carbamoyl-biphenyl-4-yl)-propionic acid methyl ester. The product was deprotected according to General Procedure C to provide an amine-HCl salt, which was coupled with (3S,8S)-3-[4-(3,4-dichloro-benzyloxy)-phenyl]-2,3,8,9-tetrahydro-6H-[1,4]dioxino[2,3-g]isoquinoline-7,8-dicarboxylic acid 7-tert-butyl ester according to General Procedure L. The product was deprotected according to General Procedure C to provide an amine-HCl salt, which was treated with excess NEt3 in DCM to produce a free amine. The free amine was coupled with 2,5-dimethyloxazole-4-carboxylic acid (2 eq.) in dry DCM with HBTU (2.2 eq.) and NEt3 (3 eq.). After reacting for 2 hours at room temperature, the reaction mixture was purified by flash chromatography to provide the product, which was hydrolyzed according to general procedure B to give the title compound (11 mg). LCMS (m/z) 876. the reaction mixture was purified by flash chromatography

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Suzuki coupling. To a solution of (S)-3-(4-Bromo-phenyl)-2-tert-butoxycarbonylamino-propionic acid methyl ester in toluene (250 mL) was added 4-cyanobenzeneboronic acid, Pd(PPh3)4, and 1N Na2CO3 solution (105 mL). The mixture was heated at reflux for 7 h. After completion of the reaction, the aqueous layer was drained. The organic layer was washed with 10% Na2CO3 and 1 N HCl. The organic layer was dried over sodium sulfate and concentrated under reduced pressure to afford the crude product. The residue was then purified by column chromatography (hexanes-EtOAc) to provide (S)-2-tert-Butoxycarbonylamino-3-(4′-cyano-biphenyl-4-yl)-propionic acid methyl ester (18.2 g). LCMS (m/z) 382. The mixture was heated at reflux for 7 h After completion of the reaction The organic layer was washed with 10% Na2CO3 and 1 N HCl The organic layer was dried over sodium sulfate concentrated under reduced pressure to afford the crude product The residue was then purified by column chromatography (hexanes-EtOAc)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (S)-3-(4-Bromo-phenyl)-2-tert-butoxycarbonylamino-propionic acid methyl ester and 4-carbamoylphenyl boronic acid (2 eq.) were coupled in 7:2 toluene-H2O with Na2CO3 (3 eq.) and Pd(PPh3)4 (0.1 eq.). After heating for 4 hours at 80° C., the reaction mixture was purified by flash chromatography to provide (S)-2-tert-butoxycarbonylamino-3-(4′-carbamoyl-biphenyl-4-yl)-propionic acid methyl ester. The product was deprotected according to General Procedure C to provide an amine-HCl salt, which was coupled with (3S,8S)-3-[4-(3,4-dichloro-benzyloxy)-phenyl]-2,3,8,9-tetrahydro-6H-[1,4]dioxino[2,3-g]isoquinoline-7,8-dicarboxylic acid 7-tert-butyl ester according to General Procedure L. The product was deprotected according to General Procedure C to provide an amine-HCl salt, which was treated with excess NEt3 in DCM to produce a free amine. The free amine was coupled with 2,5-dimethyloxazole-4-carboxylic acid (2 eq.) in dry DCM with HBTU (2.2 eq.) and NEt3 (3 eq.). After reacting for 2 hours at room temperature, the reaction mixture was purified by flash chromatography to provide the product, which was hydrolyzed according to general procedure B to give the title compound (11 mg). LCMS (m/z) 876. the reaction mixture was purified by flash chromatography

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (S)-3-(4-Bromo-phenyl)-2-tert-butoxycarbonylamino-propionic acid methyl ester and 4-carbamoylphenyl boronic acid (2 eq.) were coupled in 7:2 toluene-H2O with Na2CO3 (3 eq.) and Pd(PPh3)4 (0.1 eq.). After heating for 4 hours at 80° C., the reaction mixture was purified by flash chromatography to provide (S)-2-tert-butoxycarbonylamino-3-(4′-carbamoyl-biphenyl-4-yl)-propionic acid methyl ester. The product was deprotected according to General Procedure C to provide an amine-HCl salt, which was coupled with (3S,8S)-3-[4-(3,4-dichloro-benzyloxy)-phenyl]-2,3,8,9-tetrahydro-6H-[1,4]dioxino[2,3-g]isoquinoline-7,8-dicarboxylic acid 7-tert-butyl ester according to General Procedure L. The product was deprotected according to General Procedure C to provide an amine-HCl salt, which was treated with excess NEt3 in DCM to produce a free amine. The free amine was coupled with 2,5-dimethyloxazole-4-carboxylic acid (2 eq.) in dry DCM with HBTU (2.2 eq.) and NEt3 (3 eq.). After reacting for 2 hours at room temperature, the reaction mixture was purified by flash chromatography to provide the product, which was hydrolyzed according to general procedure B to give the title compound (11 mg). LCMS (m/z) 876. the reaction mixture was purified by flash chromatography

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Suzuki Coupling. To a solution of (S)-3-(4-Bromo-phenyl)-2-tert-butoxycarbonylamino-propionic acid methyl ester in toluene (250 mL) was added 4-cyanobenzeneboronic acid, Pd(PPh3)4, and 1N Na2CO3 solution (105 mL). The mixture was heated at reflux for 7 h. After completion of the reaction, the aqueous layer was drained. The organic layer was washed with 10% Na2CO3 and 1 N HCl. The organic layer was dried over sodium sulfate and concentrated under reduced pressure to afford the crude product. The residue was then purified by column chromatography (hexanes-EtOAc) to provide (S)-2-tert-Butoxycarbonylamino-3-(4′-cyano-biphenyl-4-yl)-propionic acid methyl ester (18.2 g). LCMS (m/z) 382. The mixture was heated at reflux for 7 h After completion of the reaction The organic layer was washed with 10% Na2CO3 and 1 N HCl The organic layer was dried over sodium sulfate concentrated under reduced pressure to afford the crude product The residue was then purified by column chromatography (hexanes-EtOAc)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Suzuki Coupling. To a solution of (S)-3-(4-Bromo-phenyl)-2-tert-butoxycarbonylamino-propionic acid methyl ester in toluene (250 mL) was added 4-cyanobenzeneboronic acid, Pd(PPh3)4, and 1N Na2CO3 solution (105 mL). The mixture was heated at reflux for 7 h. After completion of the reaction, the aqueous layer was drained. The organic layer was washed with 10% Na2CO3 and 1 N HCl. The organic layer was dried over sodium sulfate and concentrated under reduced pressure to afford the crude product. The residue was then purified by column chromatography (hexanes-EtOAc) to provide (S)-2-tert-Butoxycarbonylamino-3-(4′-cyano-biphenyl-4-yl)-propionic acid methyl ester (18.2 g). LCMS (m/z) 382. The mixture was heated at reflux for 7 h After completion of the reaction The organic layer was washed with 10% Na2CO3 and 1 N HCl The organic layer was dried over sodium sulfate concentrated under reduced pressure to afford the crude product The residue was then purified by column chromatography (hexanes-EtOAc)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (S)-3-(4-Bromo-phenyl)-2-tert-butoxycarbonylamino-propionic acid methyl ester and 4-carbamoylphenyl boronic acid (2 eq.) were coupled in 7:2 toluene-H2O with Na2CO3 (3 eq.) and Pd(PPh3)4 (0.1 eq.). After heating for 4 hours at 80° C., the reaction mixture was purified by flash chromatography to provide (S)-2-tert-butoxycarbonylamino-3-(4′-carbamoyl-biphenyl-4-yl)-propionic acid methyl ester. The product was deprotected according to General Procedure C to provide an amine-HCl salt, which was coupled with (3S,8S)-3-[4-(3,4-dichloro-benzyloxy)-phenyl]-2,3,8,9-tetrahydro-6H-[1,4]dioxino[2,3-g]isoquinoline-7,8-dicarboxylic acid 7-tert-butyl ester according to General Procedure L. The product was deprotected according to General Procedure C to provide an amine-HCl salt, which was treated with excess NEt3 in DCM to produce a free amine. The free amine was coupled with 2,5-dimethyloxazole-4-carboxylic acid (2 eq.) in dry DCM with HBTU (2.2 eq.) and NEt3 (3 eq.). After reacting for 2 hours at room temperature, the reaction mixture was purified by flash chromatography to provide the product, which was hydrolyzed acording to general procedure B to give the title compound (11 mg). LCMS (m/z) 876. the reaction mixture was purified by flash chromatography

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Suzuki Coupling. To a solution of (S)-3-(4-Bromo-phenyl)-2-tert-butoxycarbonylamino-propionic acid methyl ester in toluene (250 mL) was added 4-cyanobenzeneboronic acid, Pd(PPh3)4, and 1N Na2CO3 solution (105 mL). The mixture was heated at reflux for 7 h. After completion of the reaction, the aqueous layer was drained. The organic layer was washed with 10% Na2CO3 and 1 N HCl. The organic layer was dried over sodium sulfate and concentrated under reduced pressure to afford the crude product. The residue was then purified by column chromatography (hexanes-EtOAc) to provide (S)-2-tert-Butoxycarbonylamino-3-(4′-cyano-biphenyl-4-yl)-propionic acid methyl ester (18.2 g). LCMS (m/z) 382. The mixture was heated at reflux for 7 h After completion of the reaction The organic layer was washed with 10% Na2CO3 and 1 N HCl The organic layer was dried over sodium sulfate concentrated under reduced pressure to afford the crude product The residue was then purified by column chromatography (hexanes-EtOAc)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Suzuki coupling: To a solution of (S)-3-(4-Bromo-phenyl)-2-tert-butoxycarbonylamino-propionic acid methyl ester (70.1 mmol) in toluene (250 mL) was added 4-cyanobenzeneboronic acid (105 mmol), Pd(PPh3)4 (3.5 mmol), and 1N Na2CO3 solution (105 mL). The mixture was heated at reflux for 7 h. After completion of the reaction, the aqueous layer was drained. The organic was washed with 10% Na2CO3 and 1 N HCl. The organic was dried over sodium sulfate and concentrated under reduced pressure to afford the crude product. The residue was purified by column chromatography (hexanes-EtOAc) to provide (S)-2-tert-Butoxycarbonylamino-3-(4′-cyano-biphenyl-4-yl)-propionic acid methyl ester (18.2 g). LC-MS (m/z) 382. The mixture was heated at reflux for 7 h After completion of the reaction The organic was washed with 10% Na2CO3 and 1 N HCl The organic was dried over sodium sulfate concentrated under reduced pressure to afford the crude product The residue was purified by column chromatography (hexanes-EtOAc)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Suzuki coupling: To a solution of (S)-3-(4-Bromo-phenyl)-2-tert-butoxycarbonylamino-propionic acid methyl ester (70.1 mmol) in toluene (250 mL) was added 4-cyanobenzeneboronic acid (105 mmol), Pd(PPh3)4 (3.5 mmol), and 1N Na2CO3 solution (105 mL). The mixture was heated at reflux for 7 h. After completion of the reaction, the aqueous layer was drained. The organic was washed with 10% Na2CO3 and 1 N HCl. The organic was dried over sodium sulfate and concentrated under reduced pressure to afford the crude product. The residue was purified by column chromatography (hexanes-EtOAc) to provide (S)-2-tert-Butoxycarbonylamino-3-(4′-cyano-biphenyl-4-yl)-propionic acid methyl ester (18.2 g). LC-MS (m/z) 382. The mixture was heated at reflux for 7 h After completion of the reaction The organic was washed with 10% Na2CO3 and 1 N HCl The organic was dried over sodium sulfate concentrated under reduced pressure to afford the crude product The residue was purified by column chromatography (hexanes-EtOAc)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (S)-3-(4-Bromo-phenyl)-2-tert-butoxycarbonylamino-propionic acid methyl ester and 4-carbamoylphenyl boronic acid (2 eq.) were coupled in 7:2 toluene-H2O with Na2CO3 (3 eq.) and Pd(PPh3)4 (0.1 eq.). After heating for 4 hours at 80° C., the reaction mixture was purified by flash chromatography to provide (S)-2-tert-butoxycarbonylamino-3-(4′-carbamoyl-biphenyl-4-yl)-propionic acid methyl ester. The product was deprotected according to General Procedure C to provide an amine-HCl salt, which was coupled with (3S,8S)-3-[4-(3,4-dichloro-benzyloxy)-phenyl]-2,3,8,9-tetrahydro-6H-[1,4]dioxino[2,3-g]isoquinoline-7,8-dicarboxylic acid 7-tert-butyl ester according to General Procedure L. The product was deprotected according to General Procedure C to provide an amine-HCl salt, which was treated with excess NEt3 in DCM to produce a free amine. The free amine was coupled with 2,5-dimethyloxazole-4-carboxylic acid (2 eq.) in dry DCM with HBTU (2.2 eq.) and NEt3 (3 eq.). After reacting for 2 hours at room temperature, the reaction mixture was purified by flash chromatography to provide the product, which was hydrolyzed according to general procedure B to give the title compound (11 mg). LCMS (m/z) 876. the reaction mixture was purified by flash chromatography

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: (S)-3-(4-Bromo-phenyl)-2-tert-butoxycarbonylamino-propionic acid methyl ester and 4-carbamoylphenyl boronic acid (2 eq.) were coupled in 7:2 toluene-H2O with Na2CO3 (3 eq.) and Pd(PPh3)4 (0.1 eq.). After heating for 4 hours at 80° C., the reaction mixture was purified by flash chromatography to provide (S)-2-tert-butoxycarbonylamino-3-(4′-carbamoyl-biphenyl-4-yl)-propionic acid methyl ester. The product was deprotected according to General Procedure C to provide an amine-HCl salt, which was coupled with (3S,8S)-3-[4-(3,4-dichloro-benzyloxy)-phenyl]-2,3,8,9-tetrahydro-6H-[1,4]dioxino[2,3-g]isoquinoline-7,8-dicarboxylic acid 7-tert-butyl ester according to General Procedure L. The product was deprotected according to General Procedure C to provide an amine-HCl salt, which was treated with excess NEt3 in DCM to produce a free amine. The free amine was coupled with 2,5-dimethyloxazole-4-carboxylic acid (2 eq.) in dry DCM with HBTU (2.2 eq.) and NEt3 (3 eq.). After reacting for 2 hours at room temperature, the reaction mixture was purified by flash chromatography to provide the product, which was hydrolyzed according to general procedure B to give the title compound (11 mg). LCMS (m/z) 876. the reaction mixture was purified by flash chromatography