5-((2R,4S)-4-cyano-2-(3-fluorophenyl)pyrrolidin-1-yl)-N,N-bis(4-methoxybenzyl)pyrazolo[1,5-a]pyridine-3-carboxamide → 5-((2R,4S)-4-cyano-2-(3-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyridine-3-carboxamide

Participants

Reaction Steps

A solution of 5-((2R,4S)-4-cyano-2-(3-fluorophenyl)pyrrolidin-1-yl)-N,N-bis(4-methoxybenzyl)pyrazolo[1,5-a]pyridine-3-carboxamide (I-35) (15 mg, 0.025 mmol) in TFA (0.5 mL) was heated to 60° C. for 2 hours. The reaction was reduced to dryness and the crude material was taken up in DMSO and purified by preparative LCMS and lyophilized to give 5-((2R,4S)-4-cyano-2-(3-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyridine-3-carboxamide (X-25). 1H NMR (400 MHz, CD3CN) δ 8.22 (d, J=7.8 Hz, 1 H), 8.05 (s, 1 H), 7.43-7.28 (m, 1 H), 7.10 (d, J=7.7 Hz, 1 H), 7.06-6.96 (m, 3 H), 6.38 (dd, J=2.8, 7.7 Hz, 1 H), 5.09 (dd, J=3.0, 8.1 Hz, 1 H), 4.18 (dd, J=7.6, 9.6 Hz, 1 H), 3.82-3.70 (m, 1 H), 3.49-3.34 (m, 1 H), 2.86-2.68 (m, 1 H), 2.38-2.28 (m, 1 H). MS m/z 350.1 (M+1)+.

Provenance & Evidence