(S)-2-[2-((3aR,5R,6S,6aR)-5-Azidomethyl-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-6-yloxy)-acetylamino]-3-prop-2-ynyloxy-propionic acid methyl ester 在
copper(II) sulfate 、
sodium ascorbate 作用下,
以
水 、
叔丁醇 为溶剂,
反应 24.0h,
以32%的产率得到methyl (3R,5R,9R,10S,15S)-7,7-dimethyl-13-oxo-4,6,8,11,17-pentaoxa-1,14,20,21-tetrazatetracyclo[17.2.1.03,10.05,9]docosa-19(22),20-diene-15-carboxylate