Pharmaceutical application of sodium-glucose cotransporter 1 inhibitors
A technology of medicinal salts and compounds, applied in the field of sodium-glucose cotransporter 1 inhibitors, which can solve the problems of lack of curative effect
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[0028]
[0029] (2S,3S,4R,5S,6R)-2-(3-(4-((E)-4methoxy-4-oxobutyl-1-enyl)benzyl)-4-methyl Preparation of phenyl)-6-(methylthio)tetrahydro-2H-pyran-3,4,5-triyltriacetate (2):
[0030] (2S,3S,4R,5S,6R)-2-(3-(4-Chlorobenzyl)-4-methylphenyl)-6-(methylsulfanyl)tetrahydro-2H-pyran -3,4,5-triyltriacetate (10g, 19mmol) was loaded into a microwave vial, and 3-butenoic acid methyl ester (5.7g, 57mmol) and tris(dibenzylideneacetone)dipalladium were added successively (Pd 2 dba 3 , 1.74 g, 1.9 mmol), tris(tert-butyl)phosphonium tetrafluoroborate (2.2 g, 7.6 mmol), dicyclohexylmethylamine (11.1 g, 57 mmol) and N-methylpyrrolidone (100 mL). The reaction vial was placed in a microwave under nitrogen protection, and heated and stirred at 160° C. for 40 minutes. After the reaction was completed, it was cooled to room temperature, and the reaction solution was filtered on diatomaceous earth and washed with ethyl acetate. The organic layer was washed successively with water, saturated so...
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