Acetic acid (2R,3S,4R,5S,6S)-3-acetoxy-2-acetoxymethyl-5-acetylamino-6-isocyano-tetrahydro-pyran-4-yl ester 在
吡啶-N-氧化物 、 3 A molecular sieve 、
碘 作用下,
以
乙腈 为溶剂,
生成 Acetic acid (2R,3S,4R,5S,6S)-3-acetoxy-2-acetoxymethyl-5-acetylamino-6-isocyanato-tetrahydro-pyran-4-yl ester