p. 589 - 603
(2007/10/02)p. 613 - 617
(2007/10/02)N-<(3,3-bisbenzyloxymethylcyclobut-1-yl)-aminocarbonyl>-3-methoxy-2-methyl-2-propenamide
2-(benzyloxy)-7,7-dimethyl-6,8-dioxaspiro<3.5>nonane
7,7-dimethyl-6,8-dioxaspiro<3.5>nonan-2-ol
diethyl 3-(benzyloxy)cyclobutane-1,1-dicarboxylate
[3-benzyloxy-1-(hydroxymethyl)cyclobutyl]methanol