SGLTs (sodium-dependent glucose transporters 2) inhibitor, preparation method thereof and pharmaceutical application of inhibitor
A technology of pharmacy, compound, applied in the field of drug synthesis
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[0110] Example 1 (1S, 2S, 3S, 4R, 5S)-1-(hydroxymethyl)-5-(7-(4-methoxybenzyl)-4-methyl-2,3-dihydro-1H Preparation of -inden-5-yl)-6,8-dioxabicyclo[3.2.1]octane-2,3,4-triol
[0111]
[0112] Step 1: Preparation of (6-bromo-7-methyl-2,3-dihydro-1H-inden-4-yl)(4-methoxyphenyl)methanone
[0113]
[0114] N 2 Under protection, 6-bromo-7-methyl-2,3-dihydro-1H-indene-4-carboxylic acid (6.9 g, 27.1 mmol) was dissolved in DCM (30 mL), the solution was cooled to 0 °C, then Will (COCl) 2 (3.5 mL, 41.4 mmol) in DMF (0.10 mL) was slowly added dropwise. The reaction solution was stirred overnight at room temperature. After the reaction solution was concentrated, the oil pump was pumped dry for half an hour. The resulting product was dissolved in DCM (50 mL), then cooled to 0 °C, anisole (3.5 g, 32.4 mmol) and AlCl were added 3 (4.5 g, 33.8 mmol). After the reaction solution was warmed to room temperature, it was stirred at room temperature for 4 hours. The reaction solution w...
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