2,5-anhydro-1-deoxy-1-(3'-(N-tert-butyloxycarbonyl)uracil-1'-yl)-6-(5''-(N,N',N'',N''-tetra-(tert-butyloxycarbonyl)guanidino)-1'',5''-dideoxy-2'',3''-O-isopentylidene-β-D-ribos-1''-yl)-D-glucitol 在
水 、
三氟乙酸 作用下,
以60%的产率得到2,5-anhydro-1-deoxy-1-(uracil-1'-yl)-6-((5''-guanidino)-1'',5''-dideoxy-2'',3''-dihydroxy-β-D-ribos-1''-yl)-D-glucitol