Metal-graphite reagents in carbohydrate chemistry, IX fragmentations of 1-deoxy-1-iodo-2,3;4,5-di-O-isopropylidene pentitols
作者:Alois Fürstner
DOI:10.1016/s0040-4039(00)97457-4
日期:——
Compounds and , each readily available in both enantiomeric forms smoothly fragment on treatment with zinc/silver-graphite or potassium-graphite laminate (C8K), respectively, thus affording the full set of stereoisomeric 1,2-O- isopropylidene-pent-4-enitols.
作者:Rajib Kumar Goswami、Gour Hari Mandal、Dhiman Saha、Sourya Shankar Auddy
DOI:10.1055/a-1881-0529
日期:2023.4
The asymmetric synthesis of the key skeleton of phosphoeleganin has been achieved for the first time by using a convergent approach. The salient features of this synthesis include amidation to install a glycine amide at the C-1 position, Wittig olefination to access the C5–C6 bond, Julia–Kocienski olefinations to prepare the C9–C10 and C13–C14 bonds, and a Takai olefination and a Sonogashira coupling