Facile Synthesis of Enantiomerically Pure Carbafuranoses: Precursors of Carbocyclic Nucleosides
作者:John K. Gallos、Constantinos C. Dellios、Ekaterini E. Spata
DOI:10.1002/1099-0690(200101)2001:1<79::aid-ejoc79>3.0.co;2-1
日期:2001.1
An efficient and highly diastereoselective synthetic approach to enantiomerically pure (−)-(1R,2R,3S,4R)- and (+)-(1S,2S,3R,4S)-4-hydroxyethylcyclopentane-1,2,3-triols is reported, which involves conversion of D-ribose or D-arabinose to (+)- or (−)-ethyl Z-4,5-isopropylidenedioxyhepta-2,6-dienoate, mercuration of the terminal double bond by mercury(II) acetate, followed by reductive radical cyclization
一种对映异构纯 (-)-(1R,2R,3S,4R)- 和 (+)-(1S,2S,3R,4S)-4-羟乙基环戊烷-1,2,3-三醇的高效且高度非对映选择性合成方法据报道,这涉及将 D-核糖或 D-阿拉伯糖转化为 (+)- 或 (-)-乙基 Z-4,5-isopropylidenedioxyhepta-2,6-dienoate,通过汞 (II) 对末端双键进行汞化乙酸盐,然后进行还原自由基环化和进一步的标准还原和脱保护操作。