(1,1,1-trichloro-2-methylpropan-2-yl) N-[1-[(2R,3R,4R,5R)-5-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-4-bis(phenylsulfanyl)phosphoryloxy-3-(oxan-2-yloxy)oxolan-2-yl]-2-oxopyrimidin-4-yl]carbamate 在
triethylammonium phosphinate 作用下,
以
吡啶 为溶剂,
以100%的产率得到{1-[(2R,3R,4R,5R)-5-[Bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-4-(hydroxy-phenylsulfanyl-phosphoryloxy)-3-(tetrahydro-pyran-2-yloxy)-tetrahydro-furan-2-yl]-2-oxo-1,2-dihydro-pyrimidin-4-yl}-carbamic acid 2,2,2-trichloro-1,1-dimethyl-ethyl ester; compound with triethyl-amine