p. 11751 - 11764
(2007/10/02)p. 8107 - 8110
(2007/10/02)3-hydroxy-cyclopentene-1-carboxylic acid methyl ester
methyl 3-oxocyclopent-1-enecarboxylate
1-(carboxymethoxy)cyclopentadiene
methyl 4-hydroxybicyclo<3.1.0>hexane-1-carboxylate
dimethylsulfoxonium methylide