(S)-1-But-3-enyl-5-hydroxymethyl-pyrrolidin-2-one

(3aR,9aS,9bR)-3a,6,8,9,9a,9b-Hexahydro-1H-3-oxa-6a-aza-cyclopenta[e]azulene-2,7-dione

(2R,3aR,9aS,9bR)-2-Methoxy-decahydro-3-oxa-6a-aza-cyclopenta[e]azulen-7-one

(S)-5-(1-iodovinyl)-1-(pent-4-enyl)pyrrolidin-2-one

ethyl 3-((S)-5-oxo-1-(pent-4-enyl)pyrrolidin-2-yl)but-3-enoate