p. 2327 - 2331
(2007/10/02)benzyl (E)-2-butenoate
C17H23NO5
C17H23NO5
ethyl 3,3-(ethylenedioxy)-4-formylbutyrate
(+)-3α-<(1R)-1-<(tert-butyldimethylsilyl)oxy>ethyl>-4β-<3-<<(p-nitrobenzyl)oxy>carbonyl>-2,2-(ethylenedioxy)propyl>azetidin-2-one
6β-<(2R)-2-<(tert-butyldimethylsilyl)oxy>-(1S)-1-<<(p-nitrobenzyl)oxy>carbonyl>propyl>-4,4-(ethylenedioxy)piperidin-2-one
(3S,4R)-3-[(R)-1-hydroxyethyl]-4-[3-(4-nitrobenzyl)-oxycarbonyl-2-oxopropyl]azetidin-2-one