p. 3021 - 3027
(2007/10/03)3,4,6-tri-O-benzyl-D-glucal
2-tert-butoxycarbonylamino-4-(2,2-dimethyl-4,6-dioxo-[1,3]dioxan-5-ylidene)-4-hydroxy-butyric acid benzyl ester
(S)-2-tert-Butoxycarbonylamino-4-[(Z)-hydroxyimino]-hexanedioic acid 1-benzyl ester 6-methyl ester
2-[[(1,1-dimethylethoxy)carbonyl]amino]-4-oxo-hexanedioic acid 6-methyl 1-(phenylmethyl) ester
2-tert-butoxycarbonylamino-succinic acid 1-benzyl ester