A Protection-Free Synthetic Access to (±)-1-Deoxy-6-<i>epi</i>-castanospermine and (±)-1-Deoxy-6,8a-di-<i>epi</i>-castanospermine
作者:Angeliki-Theodora Serafidou、Efthymia G. Yioti、John K. Gallos
DOI:10.1002/ejoc.201201334
日期:2013.2
A new synthesis of (±)-1-deoxy-6-epi-castanospermine and (±)-1-deoxy-6,8a-di-epi-castanospermine has been developed, starting from the hetero-Diels–Alder adduct of ethyl 2-nitrosoacrylate and ethyl vinyl ether. Appropriate terminal dienes were prepared by standard manipulations, which, upon RCM followed by dihydroxylation and catalytic Raney Ni hydrogenation, led to the title compounds, which are of