3-p-nitrobenzyloxycarbonylaminothiopropionic acid

p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-(3-p-nitrobenzyloxycarbonylaminopropionylthio)-2-oxoazetidin-1-yl>-2-triphenylphosphoranylideneacetate

4-乙酰氧基氮杂环丁酮

(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-<3-(p-nitrobenzyloxycarbonylamino)propionylthio>azetidin-2-one

p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-(3-p-nitrobenzyloxycarbonylaminopropionylthio)-2-oxoazetidin-1-yl>-2-hydroxyacetate