Page 1. Tetrahedron Letters,Vol.29,No.34,pp 4341-4344,1988 0040-4039/88 $3.00 + .OO Printed in Great Britain Pergamon Press plc ... HF pr equiv. -pa pb pc -2 Boc ' ' I t f [link+polymer mild acid P HF or equiv. Scheme I miJP acid \ Fmoc ya Pb PC pd '5 4 link] base f -polymer ...