p. 3439 - 3442
(2007/10/03)
(4S)-Methyl 4-(benzyloxy)-2-
(4S)-Methyl 4-(benzyloxy)-2-
(2Z,4R,5R) methyl 4-acetoxy-5-[(2S)-N-(benzoxycarbonyl)aziridin-2-yl]-5-[(tert-butyldimethylsilyl)oxy]-2-[N-(methoxycarbonyl)amino]-2-pentenoate
(4R,5R) methyl 4-acetoxy-5-[(tert-butyldimethylsilyl)oxy]-5-[(2S)-N-(benzoxycarbonyl)aziridin-2-yl]-3-bromo-2-[N-(methoxycarbonyl)imino]pentanoate
(2Z,4R,5R) methyl 4-acetoxy-5-[(2S)-N-(benzoxycarbonyl)aziridin-2-yl]-3-bromo-5-[(tert-butyldimethylsilyl)oxy]-2-[N-(methoxycarbonyl)amino]-2-pentenoate