... Acta Chem. ... 660 Acta Chemica Scandinavica 43 (1989) 660—664 \CONH2 \CHZCI con CHch3 3 4 QCONHz Qcox cuzn' enzn' 5 a process disclosed in a patent, proline (D or L) is converted into prolinamide which is acylated (3) and subsequently reduced to give the ... Vol. ...