2-Amino-5-cyanopyridine → (2S)-3-[2-(tert-butyl-dimethylsilyl)oxyethoxy]-N-(5-cyanopyridin-2-yl)-2-[1-(3-fluoro-2-methylphenyl)pyrazolo[4,5-e]pyrimidin-4-yl]oxypropanamide

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Reaction Steps

Prepared using a procedure analogous to that described for Intermediate AE1 using (2S)-methyl-3-(2-(tert-butyldiphenylsilyloxy)ethoxy)-2-(1-(3-fluoro-2-methylphenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yloxy)propanoate (Intermediate AF4) and 6-aminonicotinonitrile. 1H NMR (400 MHz, DMSO) d 0.89 (9H, s), 1.96 (3H, d), 3.83-3.69 (4H, m), 4.12-4.04 (1H, m), 4.17 (1H, dd), 6.02 (1H, m), 7.51-7.27 (9H, m), 7.60 (4H, m), 8.13 (1H, d), 8.22 (1H, dd), 8.51 (1H, s), 8.55 (1H, s), 8.81 (1H, d), 11.56 (1H, s). m/z (ES+) (M+H)+=716; HPLC tR=3.29 min.

Provenance & Evidence