(S)-1-Allyl-5-[(3aR,5S,6R,6aR)-5-((R)-1,2-dihydroxy-ethyl)-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-6-yl]-pyrrolidin-2-one

Methanesulfonic acid (R)-1-[(3aR,5S,6R,6aR)-6-((S)-1-allyl-5-oxo-pyrrolidin-2-yl)-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-5-yl]-2-methanesulfonyloxy-ethyl ester

(S)-1-((E)-But-2-enyl)-5-[(2R,3R)-5-oxo-2-((E)-styryl)-tetrahydro-furan-3-yl]-pyrrolidin-2-one