Hd. Arndt et al., STEREOSELECTIVE SYNTHESIS OF A TERPYRROLIDINE UNIT, A POTENTIAL BUILDING-BLOCK FOR ANION RECOGNITION, Tetrahedron letters, 38(22), 1997, pp. 3879-3882
The first stereoselective synthesis of a trans-threo-trans-threo-trans
terpyrrolidine was achieved. A bidirectional strategy involving doubl
e acetylide coupling of two trans-N-BOC-pyrrolidine-aldehydes 3, epime
risation-free hydrogenation and ring closure via a seven-membered cycl
ic sulfate gives access to the terpyrrolidine scaffold. (C) 1997 Elsev
ier Science Ltd.