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Pyrrolidines are cyclic secondary amines with a five-membered ring, containing four carbon atoms and one nitrogen atom. The pyrrolidine ring is the central structure of the amino acid proline and its derivatives. Chiral pyrrolidines play an important role both as chiral building blocks for auxiliaries as well as key structures relevant to biologically active substances. Derivatives of the methylpyrrolidinyl fragment are common structural motifs present in several inhibitors and antagonists, including a series of HIV-1 reverse transcriptase inhibitors and histamine H3 receptor and dopamine D4 antagonists. Sigma-Aldrich has a large selection of pyrrolidines as heterocyclic building blocks for organic synthesis and medicinal chemistry, the majority of which are available as racemates or in either enantiomeric form.

Learn More about Pyrrolidines
Chiral Pyrrolidines
Chiral 2,2’-Bipyrrolidines