HCID 67294734, compound → HCID 67294552, compound

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Reaction Steps

tert-butyl 7-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)pyrazolo[1,5-a]pyrimidin-5-yl)-3-oxa-9-azabicyclo[3.3.1]non-6-ene-9-carboxylate (1.27 g, 2.06 mmol) in EtOAc (50 mL) was hydrogenated at 50° C. using 10% Pd/C catalyst (200 mg) and 1 atmospheric hydrogen pressure for 16 h. After filtering off the catalyst, the solvent was evaporated off under reduced pressure and crude material was purified by column chromatography (0-40% hexane-ethyl acetate) to give product tert-butyl 7-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)pyrazolo[1,5-a]pyrimidin-5-yl)-3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate (1.1 g) as syn- and anti-mixture. HPLC-MS tR=3.15 min (UV254 nm). Mass calculated for formula C30H53N5O5Si2 619.3; observed MH+ (LCMS) 620.2 (m/z).

Provenance & Evidence