上游原料
(2R,3S,4S,5R,6S)-2-(aminomethyl)-6-methoxytetrahydro-2H-pyran-3,4,5-triol2-nitrophenyl 1-(2-chloroethyl)-2-oxo-1-hydrazinecarboxylate1-Chloro-2-isocyanatoethane; 2-Chloroethyl isocyanate(2R,3S,4S,5R,6S)-2-(aminomethyl)-6-methoxytetrahydro-2H-pyran-3,4,5-triolN-(2-chloroethyl)-N'-[[(2R,3S,4S,5R,6S)-3,4,5-trihydroxy-6-methoxytetrahydro-2H-pyran-2-yl]methyl]urea
