Biphenyl-4-carboxylic acid (3aS,4R,5S,6aR)-2-oxo-4-trityloxymethyl-hexahydro-cyclopenta[b]furan-5-yl ester
(+/-)-7α-hydroxy-2-oxa-6β-triphenylmethoxymethyl-cis-bicyclo[3.3.0]octan-3-one
<3aR(3aα,4α,5β,6aα)>-(-)-5-(1,1'-biphenyl-4-carbonyloxy)hexahydro-4-hydroxymethyl-2H-cyclopentafuran-2-one
(+/-)-(3aα,4α,5β,6aα)-5-hydroxy-4-(hydroxymethyl)hexahydro-2H-cyclopentafuran-2-one