a Gorlaeus Laboratories, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands b Laboratory of Organic Chemistry, Catholic University Nijmegen, Toernooiveld, 6525 ED Nijmegen, The Netherlands
Abstract:
The uridylylated amino acid building blocks 2-cyanoethyl-(Nα-9-fluorenylmethoxy-carbonyl-tyrosin-4-yl)-(2′,3′-di-O-acetyluridin-5′-yl) phosphate and 2-chlorophenyl-(Nα-fluorenyl-methoxycarbonyl-serin-3-yl)-(2′,3′-di-O-acetyluridin-5′-yl) phosphate have been used successfully in an on-line SPPS of the VPgpU from the polio, coxsackie and cowpea mosaic virus.