(S)-ethyl 4--5-hexenoate

2-Pyrrolidinone, 5-ethenyl-, (5R)-

(S)-methyl 4-(benzyl(hydroxy)amino)-4-((S)-2,2-dimethyl-1,3-dioxolan-4-yl)but-2-ynoate

(R)-4-tert-Butoxycarbonylamino-4-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl)-butyric acid methyl ester

(5R)-5-(2-methylthioethyl)-2-pyrrolidinone