The highly diastereoselective [4 + 2] cycloaddition of 1-methoxybuta-1,3-diene (3) to (2R)-N-glyoxyloylbornane-10,2-sultam (2) afforded the adduct (4) which was effectively transformed into (4R,6S)-4-hydroxy-6-hydroxymethyltetrahydro-2-pyrone (1), a key synthon for the lactone moiety of compactin and mevinolin.
Methyl 2,6-N,N-diacetyl-D-purpurosaminide 4 (methyl 2,6-diacetamido-2,3,4,6-tetradeoxy-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 reaction sequence with 6.5% of the overall yield. Copyright (C) 1996 Elsevier Science Ltd
BAUER, TOMASZ;CHAPUIS, CHRISTIAN;KOZAK, JANUSZ;JURCZAK, JANUSZ, HELV. CHIM. ACTA, 72,(1989) N, C. 482-486
作者:BAUER, TOMASZ、CHAPUIS, CHRISTIAN、KOZAK, JANUSZ、JURCZAK, JANUSZ