Biphenyl-4-carboxylic acid (3aS,4S,5S,6aR)-4-((E)-5-ethoxy-4,4-dimethyl-3-oxo-pent-1-enyl)-2-oxo-hexahydro-cyclopenta[b]furan-5-yl ester 在
2,6-二叔丁基苯酚 、
二异丁基氢化铝 作用下,
以
甲苯 为溶剂,
以2.45 g的产率得到(1SR,5RS,6RS,7RS)-(+/-)-7-<(4-Biphenylyl)carbonyloxy>-6-<(1E,3RS)-3-hydroxy-4,4-dimethyl-6-oxa-1-octenyl>-2-oxabicyclo<3.3.0>octan-3-on