(3S)-3,4-dihydro-8-hydroxy-3-<(1'S)-3'-methyl-1'-<<(methyl 3''-chloro-5''-O-(3-chlorobenzoyl)-2'',3''-dideoxy-α-D-arabino-hexofuranosid)uronyl>amino>butyl>-1H-2-benzopyran-1-one                                                                                                                                                              在
                                                                                                                                                                                 sodium azide                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 12.0h,
                                                                                                                以43%的产率得到(3S)-3,4-dihydro-8-hydroxy-3-<(1'S)-3'-methyl-1'-<<(methyl 3''-azido-5''-O-(3-chlorobenzoyl)-2'',3''-dideoxy-α-D-ribo-hexofuranosid)uronyl>amino>butyl>-1H-2-benzopyran-1-one