HCID 57929486, compound → HCID 44465926, compound

Participants

Reaction Steps

(4-{5-Amino-8-[3-(tert-butyl-dimethyl-silanyloxy)-propyl]-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-ylamino}-cyclohexyl)-carbamic acid methyl ester (prepared as described in Example 2) (0.280 mmol) was dissolved in a mixture of glacial acetic acid, THF and water (3/1/1, 25 mL) and the resulting mixture was stirred at RT overnight. The reaction mixture was concentrated under reduced pressure and the crude residue was purified by preparative TLC (MeOH/DCM, 15/85) to give 11 mg of {4-[5-amino-8-(3-hydroxy-propyl)-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-ylamino]-cyclohexyl}-carbamic acid methyl ester as a yellow powder. MS=391 [M+H]+; MP=190.0-191.0° C.

Provenance & Evidence