2,2,2-Trichloro-acetimidic acid (2R,3R,4R,5R,6S)-4,5-bis-benzyloxy-6-ethylsulfanyl-3-trifluoromethanesulfonyloxy-tetrahydro-pyran-2-ylmethyl ester 在
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 3.5h,
以63 mg的产率得到(4aS,6S,7R,8S,8aS)-7,8-Bis-benzyloxy-6-ethylsulfanyl-2-trichloromethyl-4,4a,6,7,8,8a-hexahydro-pyrano[3,2-d][1,3]oxazine