p. 10027 - 10048
(2007/10/02)5,5-dimethylpyrazolidin-3-one
5,5-dimethyl-3-hydroxy-1-<2-<(trimethylsilyl)methyl>-2-propenyl>-2-pyrazolidinecarboxylic acid ethyl ester
5,5-dimethyl-1-<2-<(trimethylsilyl)methyl>-2-propenyl>-3-pyrazolidinone-2-carboxylic acid ethyl ester
5,5-dimethyl-1-<2-<(trimethylsilyl)methyl>-2-propenyl>-3-pyrazolidinone
1,8-diaza-7,7-dimethyl-3-methylenebicyclo<3.2.1>octane-8-carboxylic acid ethyl ester