Highly diastereoselective intramolecular nitrone cycloadditions to α,β-unsaturated esters.
作者:Rita Annunziata、Mauro Cinquini、Franco Cozzi、Laura Raimondi
DOI:10.1016/0040-4039(88)85237-7
日期:1988.1
Intramolecular cycloaddition of chiral α-acyloxynitrones to in situ generated α,β--unsaturated esters occurs with very high diastereoselectivity to afford useful precursors for the synthesis of β-lactam antibiotics.
手性α-酰氧基硝酮分子内环加成到原位生成的α,β-不饱和酯时,非对映选择性非常高,为合成β-内酰胺类抗生素提供了有用的前体。