Methyl 2,6-N,N-diacetyl-D-purpurosaminide 4 (methyl -2,3,4,6-tetradeox
y-alpha-D-erythrohexopyranoside) was synthesized from N-glyoxyloyl-(2R
)-bornane-10,2-sultam 2 and 1-methoxybuta-1,3-diene 3 in an 11-step re
action sequence with 6.5% of the overall yield. Copyright (C) 1996 Els
evier Science Ltd