Corrigendum to ‘Discovery and pharmacological characterization of N[2-({2-[(2S)-2-cyanopyrrolidin-1-yl]-2-oxoethyl}amino)-2 methylpropyl]-2-methylpyrazolo[1,5-a]pyrimidine-6-carboxamide hydrochloride (anagliptin hydrochloride salt) as a potent and selective DPP-IV inhibitor’ [Bioorg. Med. Chem. 19 (2011) 7221–7227]