lithium enolate to (+)-(1R,4S,5S,6S)-5-benzeneselenyl-6-chloro-3-methylidene-7-oxabicyclo[2.2.1]heptan-2-one gives a single adduct with high stereoselectivity. It was converted into a derivative of β-D-(1→3)-C-linked 1,5-dideoxy-1,5-imino-lyxopyranoside of α-D-mannofuranurono-6,1-lactone and other long-chain, branched sugars.
(-)-(1S,5R,6R,7S)-6,7-双(甲氧基甲氧基)-2,8-二氧杂双环[3.2.1] -octan-3-one烯醇
锂的迈克尔加成1R,4S,5S,6S)-5-苯
硒基-6-
氯-3-亚甲基-7-氧杂双环[2.2.1]庚-2--2-给出具有高立体选择性的单一加合物。将其转化为α-D-甘露
呋喃呋喃基-6,1-内酯和其他长链的β-D-(1→3)-C键联的1,5-二脱氧-1,5-亚
氨基-
吡喃
吡喃糖苷的衍
生物,分支糖。