(1S,4aS,5S,6R,7R,7aR)-5-Acetoxy-6-[(E)-3-(4-methoxy-phenyl)-acryloyloxy]-7-methyl-1-((2S,3R,4S,5R,6R)-3,4,5-triacetoxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-1,4a,5,6,7,7a-hexahydro-cyclopenta[c]pyran-4-carboxylic acid methyl ester 在
pyridinium chlorochromate 作用下,
以
苯 为溶剂,
以58%的产率得到(1S,4aS,5S,6R,7R,7aR)-5-Acetoxy-1-((2S,3R,4S)-3,4-diacetoxy-6-formyl-3,4-dihydro-2H-pyran-2-yloxy)-6-[(E)-3-(4-methoxy-phenyl)-acryloyloxy]-7-methyl-1,4a,5,6,7,7a-hexahydro-cyclopenta[c]pyran-4-carboxylic acid methyl ester