Synthesis of chiral pyranocyclohexane, oxepanocyclohexane, and furylpyran and -oxepane systems by the application of intramolecular nitrone and nitrile oxide cycloaddition of carbohydrate derivatives
作者:Arani Pal、Ashoke Bhattacharjee、Anup Bhattacharjya、Amarendra Patra
DOI:10.1016/s0040-4020(99)00105-2
日期:1999.3
2-isopropylidene-3-O-cyclohexenyl carbohydrate aldehyde 4 via intramolecular nitrile oxide cycloaddition, and were converted to 2-(2′-tetrahydrofuryl)pyran 28, which incorporates the lasalocid skeleton, and the related oxepane derivative 32 respectively, through modification of the furanoside ring by applying 2-O-allyl carbohydrate nitrone cycloaddition.
手性非外消旋吡喃环己烷7和8以及氧庚环环己烷11和12通过分子内一氧化氮环加成反应从单个1,2-异亚丙基-3 - O-环己烯基碳水化合物醛4中获得,并转化为2-(2'-四氢呋喃基)吡喃28,通过应用2- O-烯丙基碳水化合物硝酮环加成对呋喃糖苷环的修饰,分别结合了拉索洛西德骨架和相关的环氧庚烷衍生物32。