Synthesis of (<i>Z</i>)-3-Deoxy-3-(1,2,3,6-Tetradeoxy-3,6-Imino-L-<i>Arabino</i>-Hexitol-1-<i>C</i>-Ylidene)-D-<i>Xylo</i>-Hexose Derivatives. First Examples Of Homo-(1→3)-<i>C</i>-Linked Iminodisaccharides.
作者:Francesca Cardona、Inmaculada Robina、Pierre Vogel
DOI:10.1080/07328300008544099
日期:2000.1
Cross-aldolisation of 3,6-[(tert-butoxy)carbonyl]imino-2,3,6-trideoxy-4,5-O- isopropylidene-L-arabino-hexose (10) with 1,6-anhydro-2-O-benzyl-3-deoxy-beta-D-erythro-hexopyrano-4-ulose (6) generates, after water elimination, a single enone II that is reduced selectively into an allylic alcohol 12, deprotection of which affords methyl (Z)-3-deoxy-3-(1,2,3,6-tetradeoxy-3,6-imino-L-arabino-hexitol-1-C-ylidene)-beta-D-xylo-hexofuranoside (1) and (Z)-1,6-anhydro-3-deoxy-3-(1,2,3,6-tetradeoxy-3,6-imino-L-arabino-hexitol-1 -C-ylidene)-beta-D-xylo-hexopyranose (14).