Stereoselective Synthesis of β-<i>C</i>-Allyl- and β-<i>C</i>-Propargyl-<scp>d</scp>-arabinofuranosides
作者:C. Ramana、Sachin Narute、Rajesh Gonnade、Rahul Patil
DOI:10.1055/s-2008-1067016
日期:2008.6
The stereoselective synthesis of β-configured C-allyl- and C-propargyl-d-arabinofuranosides (4,7-anhydro-1,2,3-deoxy-d-gluco-oct-1-enitols and -oct-1-ynitols) was addressed by employing allylation/propargylation of a dialdofuranose under aqueous Barbier reaction conditions and acid-catalyzed furan ring transposition of 5-O-mesyl-manno-oct-7-eno- or 5-O-mesyl-manno-oct-7-ynofuranoside derivatives.
通过在水溶液中采用烯丙基化/丙炔基化反应,立体选择性地合成了δ-构型的 C-烯丙基和 C-丙炔基-d-阿拉伯呋喃糖(4,7-脱水-1,2、在巴比耶水溶液反应条件下,通过对二呋喃糖进行烯丙基化/丙炔基化反应,以及酸催化 5-O-甲砜基-甘露-辛-7-烯或 5-O-甲砜基-甘露-辛-7-炔呋喃糖苷衍生物的呋喃环转位,解决了 4,7-脱水-1,2,3-脱氧-d-葡萄糖-辛-1-烯糖醇和辛-1-炔糖醇的立体选择性合成问题。