反应详情

(S)-5-(N-(5-cyclopropyl-3-(methylcarbamoyl)-2-p-tolylfuro[2,3-b]pyridin-6-yl)methylsulfonamido)-2-methylpentanoic acid (Example 47, 50 mg, 0.090 mmol) and [dibenzyl chloromethyl phosphate (32.5 mg, 0.1 mmol) were stirred in DMF at RT LCMS-80% done at 1 hr Stirred at RT ON-95% done, trace SM and trace mono-de-benzylated side prod.(+) 714 Added 800 μL ACN and 200 μL water Purified on HPLC C18 20-100% ACN/water 1% NH4OH 40 mL/min over 10 min Conc. on vac at 30° C.—no degradation. To give (S)-((bis(benzyloxy)phosphoryl)oxy)methyl 5-(N-(5-cyclopropyl-3-(methylcarbamoyl)-2-(p-tolyl)furo[2,3-b]pyridin-6-yl)methylsulfonamido)-2-methylpentanoate

1. customPurified on HPLC
2. wait20-100% ACN/water 1% NH4OH 40 mL/min over 10 min Conc. on vac at 30° C.—no degradation