4-Oxo-pentanoic acid (2S,3S,4S,5R,6R)-4,5-bis-allyloxycarbonyloxy-2-methoxy-6-(4-oxo-pentanoyloxymethyl)-tetrahydro-pyran-3-yl ester 在
溶剂黄146 、
肼 作用下,
以
四氢呋喃 、
甲醇 为溶剂,
反应 0.67h,
以90%的产率得到Carbonic acid allyl ester (2R,3R,4R,5S,6S)-4-allyloxycarbonyloxy-5-hydroxy-2-hydroxymethyl-6-methoxy-tetrahydro-pyran-3-yl ester