[(R)-2-(tert-Butyl-dimethyl-silanyloxy)-2-(6-chloro-pyridin-3-yl)-ethyl]-[2-(4-nitro-phenoxy)-ethyl]-carbamic acid tert-butyl ester                                                                                                                                                              在
                                                                                                                                                                                 
吡啶   、                                                                                                  palladium on activated charcoal   、                                                                                                  ammonium formate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇   、                                                                                         
1,2-二氯乙烷                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 [(R)-2-(tert-Butyl-dimethyl-silanyloxy)-2-pyridin-3-yl-ethyl]-{2-[4-(4-methyl-piperidine-1-sulfonylamino)-phenoxy]-ethyl}-carbamic acid tert-butyl ester