p. 3225 - 3239
(2007/10/03)2-(hydroxymethyl)cyclobutanone
acetic acid (Z)-2-[2-(tert-butyl-dimethyl-silanyloxymethyl)-cyclobutylidene]-ethyl ester
(Z)-3-[2-(tert-butyl-dimethyl-silanyloxymethyl)-cyclobutylidene]-acetic acid ethyl ester
(Z)-2-[2-(tert-butyl-dimethyl-silanyloxymethyl)-cyclobutylidene]-ethanol
(Z)-3-(2-hydroxymethyl-cyclobutylidene)-acetic acid ethyl ester