Novel synthesis of purine acyclonucleosides possessing a chiral 9-hydroxyalkyl group by sugar modification of 9-D-ribitylpurines
作者:Kosaku Hirota、Yasunari Monguchi、Hironao Sajiki、Magoichi Sako、Yukio Kitade
DOI:10.1039/a707193k
日期:——
A novel approach to the synthesis of purine acyclonucleosides having chiral carbons in the N9-hydroxyalkyl chain was achieved by using 9-(2,3-O-isopropylidene-D-ribityl)purines 1, which are readily prepared from commercially available purine nucleosides. 9-[(2S,3R)-2,3,4-Trihydroxybutyl]purines 4a and 4b, 9-[(2S,3S)-2,3,4-trihydroxybutyl]purines 6a and 6b, L-eritadenine 8, and its analogue 11 are conveniently synthesized via key intermediates, (2S,3S)-2,3-isopropylidenedioxy-4-(purin-9-yl)butanals 2 prepared by NaIO4 oxidation of diols 1.
利用 9-(2,3-O-异亚丙基-D-核苷)嘌呤 1,合成了一种在 N9-羟基烷基链中具有手性碳的嘌呤无环核苷的新方法,这种嘌呤核苷很容易从市售的嘌呤核苷中制备出来。9-[(2S,3R)-2,3,4-三羟丁基]嘌呤 4a 和 4b、9-[(2S,3S)-2,3,4-三羟丁基]嘌呤 6a 和 6b、L-丝裂腺嘌呤 8、及其类似物 11 可通过关键的中间体((2S,3S)-2,3-异亚丙基二氧基-4-(嘌呤-9-基)丁醛 2 通过二元醇 1 的 NaIO4 氧化反应制备)方便地合成。