A concise sequential photochemical-metathesis approach for the synthesis of (+)-castanospermine and possible uniflorine-A stereoisomers
作者:Zhiming Zhao、Ling Song、Patrick S. Mariano
DOI:10.1016/j.tet.2005.07.014
日期:2005.9
polyhydroxylated indolizidine ring construction has been applied to the synthesis of (+)-castanospermine and possible isomers of uniflorine-A. The routes to these targets rely on the use of the earlier discovered photocyclization reaction of pyridinium perchlorate in a concise route for preparation of a key N-allylacetamidocyclopentendiol intermediate. Ring rearrangement metathesis of this substance gives an a
最近开发的多羟基吲哚并咪唑环结构开发策略已用于合成(+)-castanospermine和可能的uniflorine-A异构体。达到这些目标的途径依赖于在简洁的途径中使用较早发现的高氯酸吡啶鎓的光环化反应来制备关键的N-烯丙基乙酰酰胺基环戊烯二醇中间体。该物质的环重排复分解得到烯丙基-四氢吡啶,然后通过执行区域和立体控制的羟基化过程,然后进行吲哚并立定环,将其转化为靶标。