英文别名
2-(tert-butoxycarbonyl-phthalimido-methyl)-1-thia-3-aza-spiro[4.4]nonane-4-carboxylic acid benzyl ester;tert-butyl 4-benzyloxycarbonyl-alpha-phthalimido-1-thia-3-azaspiro[4.4]nonane-2-acetate;benzyl 2-[1-(1,3-dioxoisoindol-2-yl)-2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]-1-thia-3-azaspiro[4.4]nonane-4-carboxylate