Piclavines AI and A2 have been synthesised for the first time. The route is
short with the key step being the reaction of a bicyclic N-acyl iminium io
n with 3-trimethysilyl-1-decene. This convergent strategy gave exclusively
compounds in which the pendant decenyl group was axial, as a 6:1 mixture of
E:Z-alkene diastereoisomers. Reduction of the lactam carbonyl group gave a
6:1 mixture of piclavines Al and A2, (C) 2000 Published by Elsevier Scienc
e Ltd.