| Identification | Back Directory | [Name]
FG-4592 interMediate | [CAS]
1455091-10-7 | [Synonyms]
ROXA-030
FG-4592 INT
FG4592 intermediates
Roxadustat Impurity 4
FG-4592 interMediate
Roxadustat Impurity 13
Roxadustat Impurity 25
4-Hydroxy-7-phenoxy-3-isoquinolinecarboxylic
methyl 4-hydroxy-7-phenoxyisoquinoline-3-carboxylate
4-hydroxy-7-phenoxyisoquinoline-3-carboxylic acid methyl ester
4-Hydroxy-7-phenoxy-3-isoquinolinecarboxylic acid methyl ester
3-Isoquinolinecarboxylic acid, 4-hydroxy-7-phenoxy-, methyl ester | [Molecular Formula]
C18H15NO4 | [MDL Number]
MFCD29075436 | [MOL File]
1455091-10-7.mol | [Molecular Weight]
298.77 |
| Chemical Properties | Back Directory | [Boiling point ]
534.7±45.0 °C(Predicted) | [density ]
1.320±0.06 g/cm3(Predicted) | [storage temp. ]
Sealed in dry,2-8°C | [pka]
5.80±0.50(Predicted) | [Appearance]
White to off-white Solid | [InChI]
InChI=1S/C17H13NO4/c1-21-17(20)15-16(19)14-8-7-13(9-11(14)10-18-15)22-12-5-3-2-4-6-12/h2-10,19H,1H3 | [InChIKey]
YTWDBRIDKWWANA-UHFFFAOYSA-N | [SMILES]
C1C2=C(C=CC(OC3=CC=CC=C3)=C2)C(O)=C(C(OC)=O)N=1 |
| Hazard Information | Back Directory | [Uses]
Methyl 4-Hydroxy-7-phenoxyisoquinoline-3-carboxylate is an intermediate of N-[(4-Hydroxy-1-methyl-7-phenoxy-3-isoquinolinyl)carbonyl]glycine (H948180), a hypoxia-inducible factor (HIF) prolyl hydroxylase inhibitor used to increase white blood cell levels in blood and hematopoietic progenitor cells in bone marrow. | [Synthesis]
General procedure for the synthesis of methyl 4-hydroxy-7-phenoxyisoquinoline-3-carboxylate from methyl 2-[(methoxycarbonylmethyl)(toluene-4-sulfonyl)amino]methyl-4-phenoxybenzoate: a solution was prepared by dissolving sodium methanolate (12.70 g, 234.60 mmol) in methanol (40 mL) under ice-bath conditions. The solution was slowly added dropwise to a solution of dimethyl sulfoxide (82 mL) containing methyl 2-[(methoxycarbonylmethyl)(toluene-4-sulfonyl)amino]methyl-4-phenoxybenzoate (18.90 g, 39.10 mmol). After dropwise addition, the reaction mixture was continued to be stirred at room temperature for 2 hours. Upon completion of the reaction, methanol was removed by distillation under reduced pressure. The residue was diluted with water (50 mL) and the pH was adjusted to 10 with 1 N dilute hydrochloric acid.Subsequently, the organic layers were combined by extraction with ethyl acetate (100 mL x 3). The organic layer was washed sequentially with water (100 mL) and saturated brine (100 mL) and then dried with anhydrous sodium sulfate. The dried organic phase was concentrated under reduced pressure, and the resulting concentrate was separated and purified by column chromatography, resulting in 9.1 g of white solid product in 78.8% yield. | [References]
[1] Patent: CN106083720, 2016, A. Location in patent: Paragraph 0062; 0071-0072
[2] Patent: WO2013/134660, 2013, A1. Location in patent: Paragraph 0169 |
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