(1R,2S,3R,4S,5S,6S)-5-Formyl-6-(6-methoxycarbonyl-hexyl)-7-oxa-bicyclo[2.2.1]heptane-2,3-dicarboxylic acid dimethyl ester 生成 (1S,2R,3S,4R,5R,6R)-5-((E)-3-Hydroxy-oct-1-enyl)-6-(6-methoxycarbonyl-hexyl)-7-oxa-bicyclo[2.2.1]heptane-2,3-dicarboxylic acid dimethyl ester