Pyridine → HCID 118649739, compound

Participants

Reaction Steps

To an 8 mL vial charged with (R)-1-(3-amino-1-trityl-1H-pyrazolo[4,3-c]pyridin-6-yl)-3-(1-phenylethyl)urea (20 mg, 0.037 mmol) in DCM (1 ml) was added pyridine (0.1 ml) followed by ethyl chloroformate (10.70 μl, 0.111 mmol). The vial was capped and the contents stirred at room temperature for 16 h. Un-reacted chloroformate was quenched by adding MP-Trisamine (91 mg, 0.186 mmol) and tumbling the vial for an additional 3 h. The resin was filtered and the volatiles removed in vacuo to afford crude (R)-ethyl(6-(3-(1-phenylethyl)ureido)-1-trityl-1H-pyrazolo[4,3-c]pyridin-3-yl)carbamate which was taken forward without purification. MS ESI calc'd. For C37H35N6O3 [M+H]+ 611. found 611.

Provenance & Evidence