Synthesis of Novel 5-(N-Boc-N-Benzyl-2-aminoethyl)-7-oxo- 4,7-dihydropyrazolo[1,5-a]pyrimidin-3-carboxamides and Their Inhibition of Cathepsins B and K
Abstract:Eight novel 5-(N-Boc-N-benzyl-2-aminoethyl)-7-oxo-4,7-dihydropyrazolo[1,5-a]pyrimidin-3-carboxamides were prepa red in three steps from methyl 3-amino-1H-pyrazole-4-carboxylate and methyl 5-(benzyl(tert-butoxycarbonyl)amino)-3-oxopentanoate. The synthetic procedure comprises cyclocondensation of the above starting compounds, hydrolysis of the ester, and bis(pentafluorophenyl) carbonate (BPC)-mediated amidation. Title carboxamides were tested for inhibition of cathepsins K and B. The N-butylcarboxamide 5a exhib… Show more
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