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5-Benzyl-1-oxa-5-azaspiro[2.4]heptane

(S)-tert-butyl 3-(2-ethoxy-2-oxoethyl)pyrrolidine-1-carboxylate

(S)-tert-butyl 3-(2-((methylsulfonyl)oxy)ethyl)pyrrolidine-1-carboxylate

(S)-tert-butyl 3-(2-mercaptoethyl)pyrrolidine-1-carboxylate

(S)-tert-butyl 3-(2-chloroethyl)pyrrolidine-1-carboxylate

(S)-tert-butyl 3-(2-bromoethyl)pyrrolidine-1-carboxylate

(S)-tert-butyl 3-(2-iodoethyl)pyrrolidine-1-carboxylate

(R)-tert-butyl 3-(2-aminoethyl)pyrrolidine-1-carboxylate

(R)-tert-butyl 3-(2-(methylamino)ethyl)pyrrolidine-1-carboxylate

(R)-tert-butyl 3-(2-(dimethylamino)ethyl)pyrrolidine-1-carboxylate