The enantioselective total synthesis of -1-methyl-5-nonyl-2-(phenylmet
hyl)-3-pyrrolidinol, (+)-preussin 1, from (S)-phenylalanine is describ
ed. Key steps involve ring-opening of a (1-aminoalkyl) epoxide 5 by an
allyl anion, [2,3]-sigmatropic rearrangement of 9 and cyclization of
aminoepoxide 11 to give the pyrrolidine unit 12 with the correct stere
ochemistry.