3-Chloro-benzoic acid (3-azido-5-methoxy-tetrahydro-furan-2-yl)-[(S)-1-((S)-8-hydroxy-1-oxo-isochroman-3-yl)-3-methyl-butylcarbamoyl]-methyl ester 在
三氟化硼乙醚 、
间氯过氧苯甲酸 作用下,
以
二氯甲烷 为溶剂,
反应 4.0h,
以43.5%的产率得到(3S)-3-<(1'S)-1'-<<(3''-azido-5''-O-(3-chlorobenzoyl)-2'',3''-dideoxy-α-D-ribo-hexaro-1'',4''-lactone)-6''-oyl>amino>-3'-methylbutyl>-3,4-dihydro-8-hydroxy-1H-2-benzopyran-1-one