SEARCH Articles Figures Tables Nitrones pyrrolidines, piperidines, and amines Phenolic Piperidines and Pyrrolidines Piperidine and pyrrolidine Piperidine and pyrrolidine Piperidine and pyrrolidine alkaloids Pyrrolidine, Piperidine, and Pyridine Alkaloids Pyrrolidine, Tropane, Piperidine, and Polyketide Alkaloids Pyrrolidines and Piperidines Pyrrolidines and Piperidines RING REARRANGEMENT METATHESIS (RRM) A NEW CONCEPT IN PIPERIDINE AND PYRROLIDINE SYNTHESIS