5-Methyl-6-(2-tetrahydropyranyloxy)-8-<3-oxo-7-(2-tetrahydropyranyloxy)-2-oxa-6-bicyclo<3.3.0>octyl>-7-octensaeure-tert-butylester 在
红铝 作用下,
以
甲苯 为溶剂,
反应 6.0h,
以100%的产率得到(E)-8-[(3aS,5S,6aR)-2-Hydroxy-5-(tetrahydro-pyran-2-yloxy)-hexahydro-cyclopenta[b]furan-4-yl]-5-methyl-6-(tetrahydro-pyran-2-yloxy)-oct-7-enoic acid tert-butyl ester