Acetic acid (2R,3R,4R,5R)-4-acetoxy-2-[(R)-1-acetoxy-2-((2R,3S,4R,5R)-3,4,6-triacetoxy-5-benzyloxycarbonylamino-tetrahydro-pyran-2-yl)-ethyl]-5-(2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
盐酸   、                                                                                                  
乙酰氯                                                                                                                                  作用下,
                                                                                                                                                                                        反应 14.0h,
                                                                                                                以74%的产率得到1-<(11R)-2,3,5,8,9-penta-O-acetyl-10-(benzyloxycarbonyl)amino-11-chloro-6,10,11-trideoxy-α-L-galacto-D-allo-undecodialdo-1,4-furanose-11,7-pyranos-1-yl>uracil