((3aS,4aS,8aS,8bS)-6-Methoxy-8a-methyl-1,2,3,3a,4a,7,8,8a-octahydro-benzo[b]cyclopenta[d]furan-8b-yl)-methanol 在
吡啶 、
chromium(VI) oxide 作用下,
以60%的产率得到(3aS,4aS,8aS,8bR)-6-Methoxy-8a-methyl-1,2,3,3a,4a,7,8,8a-octahydro-benzo[b]cyclopenta[d]furan-8b-carbaldehyde