tert-butyl (3S)-3-aminopiperidine-1-carboxylate → (3S)-tert-butyl 3-(4-(5-(3,4-dimethoxyphenyl)-7-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl)picolinamido)piperidine-1-carboxylate

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Example ER-897036 was prepared in two steps from 4-(5-(3,4-dimethoxyphenyl)-7-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl)picolinic acid (25 mg, 0.056 mmol) and commercially available (S)-tert-butyl 3-aminopiperidine-1-carboxylate (33 mg, 0.167 mmol) in a manner similar to that of example D-6 to afford intermediate (3S)-tert-butyl 3-(4-(5-(3,4-dimethoxyphenyl)-7-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl)picolinamido)piperidine-1-carboxylate (15 mg, 0.024 mmol, 43% yield). Then, this intermediate (13 mg, 0.021 mmol) was treated with HCl in a manner similar to that of example ER-897560 to afford the desired product ER-897036 (12 mg, 96% yield.

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