(4S,5S,8S,10R,E)-4,5,8-trihydroxy-10-methyl-4,5,9,10-tetrahydro-3H-oxecin-2(8H)-one 、
4-O-benzoyl-L-rhodinal 在
N-碘代丁二酰亚胺 、 3 A molecular sieve 作用下,
以
乙腈 为溶剂,
反应 12.0h,
以34%的产率得到Benzoic acid (2S,3S,5R,6R)-6-((E)-(2R,4S,7S,8S)-7,8-dihydroxy-2-methyl-10-oxo-3,4,7,8,9,10-hexahydro-2H-oxecin-4-yloxy)-5-iodo-2-methyl-tetrahydro-pyran-3-yl ester