tert-butyl (S)-6-((2-amino-4-((trimethylsilyl)ethynyl)phenyl)carbamoyl)-5-azaspiro[2.4]heptane-5-carboxylate

(3R,7aS)-6-methylene-3-phenyltetrahydropyrrolo[1,2-c]oxazol-5(1H)-one

(3’R,7a’S)-3’-phenyldihydro-1‘H-spiro[cyclopropane-1,6’-pyrrolo[1,2-c][1,3]oxazol]-5’-one

((S)-(5-benzyl-5-azaspiro[2.4]heptan-6-yl)methanol)

(S)-1-(5-azaspiro[2.4]hept-6-yl)methanol