Diethyl Ether → [4-(4-{2-[Bis-(4-methoxy-benzyl)-amino]-pyrimidin-5-yl}-2-morpholin-4-yl-5,6-dihydro-pyrrolo[2,3-d]pyrimidin-7-yl)-pyridin-2-yl]-(2-hydroxy-ethyl)-carbamic acid tert-butyl ester

Participants

Reaction Conditions

Reaction Steps

A THF solution (5 ml) of {[4-(4-{2-[bis-(4-methoxy-benzyl)-amino]-pyrimidin-5-yl}-2-morpholin-4-yl-5,6-dihydro-pyrrolo[2,3-d]pyrimidin-7-yl)-pyridin-2-yl]-tert-butoxycarbonyl-amino}-acetic acid methyl ester (135 mg, 0.168 mmol) obtained in Step B was cooled to −40°, and 1.0M diethyl ether solution (0.20 ml, 0.20 mmol) of lithium aluminium hydride was added, which was gradually raised to 0° C. over 1 hour. The reaction mixture was quenched with aqueous potassium sodium tartrate solution, followed by extraction with dichloromethane (15 ml×2). The organic layers were combined, and washed with saturated aqueous sodium chloride solution. After the organic layer was dried over magnesium sulfate, the magnesium sulfate was filtered off, and the filtrate was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (dichloromethane/methanol=50:1), to obtain [4-(4-{2-[bis-(4-methoxy-benzyl)-amino]-pyrimidin-5-yl}-2-morpholin-4-yl-5,6-dihydro-pyrrolo[2,3-d]pyrimidin-7-yl)-pyridin-2-yl]-(2-hydroxy-ethyl)-carbamic acid tert-butyl ester as a yellow solid (73 mg, 56%).

Provenance & Evidence