Benzoic acid (2R,3S,5R)-2-[[(2R,3S,5R)-5-(6-benzoylamino-purin-9-yl)-2-hydroxymethyl-tetrahydro-furan-3-yloxy]-(2,2,2-trifluoro-ethoxy)-phosphoryloxymethyl]-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl ester 、 Phosphoric acid (2R,3S,5R)-5-(2-isobutyrylamino-6-oxo-1,6-dihydro-purin-9-yl)-2-[(4-methoxy-phenyl)-diphenyl-methoxymethyl]-tetrahydro-furan-3-yl ester 2,2,2-trifluoro-ethyl ester; compound with pyridine 在
QSNT (8-quinolinesulfonyl-3-nitro-1H-1,2,3-triazole) 作用下,
以
吡啶 为溶剂,
反应 4.0h,
以80%的产率得到