(3S,4R)-4-tert-butoxycarbonylamino-3-hydroxycyclopent-1-enecarboxylic acid

(-)-文斯内酯

(-)-methyl (1S,4R)-4-amino-cyclopent-2-ene-1-carboxylate hydrochloride

tert-butyl (1S,2R,4S,5R)-7-oxo-3-oxa-6-azatricyclo[3.2.1.02,4]octan-6-carboxylate

(1S,2R,4S,5R)-3-氧杂-6-氮杂三环[3.2.1.02,4]辛烷-7-酮