在
三氟乙酸 作用下,
以96%的产率得到(Z)-(2R,3R,4S,5R)-3,4-Dihydroxy-8-[(2R,3S,5R)-2-hydroxymethyl-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yloxy]-8-oxo-7,9,19-trioxa-1,16-diaza-8λ5-phospha-tricyclo[12.3.1.12,5]nonadeca-11,14(18)-diene-15,17-dione