p. 1703 - 1706
(2007/10/03)Nα-(4,4-dimethyl-2,6-dioxocyclohexylidenemethylene)-L-threonine tert-butyl ester
(2S,3R)-2-[(4,4-Dimethyl-2,6-dioxo-cyclohexylidenemethyl)-amino]-3-hydroxy-butyric acid
2-dimethylaminomethylene-5,5-dimethylcyclohexane-1,3-dione
(2S,3R)-2-[(4,4-Dimethyl-2,6-dioxo-cyclohexylidenemethyl)-amino]-3-((2R,3S,4R,5R,6S)-3,4,5-tris-benzyloxy-6-methyl-tetrahydro-pyran-2-yloxy)-butyric acid tert-butyl ester