Phosphoric acid 2-chloro-phenyl ester (2R,3R,4R,5R)-2-hydroxymethyl-5-[4-(4-methoxy-phenylamino)-2-oxo-2H-pyrimidin-1-yl]-4-(4-methoxy-tetrahydro-pyran-4-yloxy)-tetrahydro-furan-3-yl ester 2,2,2-trichloro-ethyl ester 、
4-Oxo-pentanoic acid (2R,3R,4R,5R)-5-(2-benzoylamino-6-oxo-1,6-dihydro-purin-9-yl)-3-[(2-chloro-phenoxy)-hydroxy-phosphoryloxy]-4-(4-methoxy-tetrahydro-pyran-4-yloxy)-tetrahydro-furan-2-ylmethyl ester 在
1-(2,4,6-triisopropylbenzenesulfonyl)-3-nitro-1,2,4-triazole 作用下,
以
吡啶 为溶剂,
反应 3.0h,
以89%的产率得到