Luisi Renzo, Capriati Vito, Degennaro Leonardo, Florio Saverio
Dipartimento Farmaco-Chimico, Università di Bari, Via E. Orabona 4, I-70126 Bari, C.N.R., Istituto di Chimica dei Composti OrganoMetallici ICCOM, Sezione di Bari, Italy.
Org Lett. 2003 Jul 24;5(15):2723-6. doi: 10.1021/ol034927q.
[reaction: see text] The stereoselective synthesis of novel alpha-epoxy-beta-amino acids is described by a route that combines the chemistry of oxazolinyloxiranyllithiums with that of nitrones. The intermediate trioxadiazadispiro[2.0.4.3]undecanes 4 have been isolated and converted by hydrolysis into epoxy-5-isoxazolidinones 5 which can be transformed into the alpha-epoxy-beta-amino acids 8 by N-O reduction.
[反应:见正文] 本文描述了一种新型α-环氧-β-氨基酸的立体选择性合成方法,该方法将恶唑啉基环氧锂的化学与硝酮的化学相结合。中间体三恶二氮杂双螺[2.0.4.3]十一烷4已被分离出来,并通过水解转化为环氧-5-异恶唑烷酮5,后者可通过N-O还原转化为α-环氧-β-氨基酸8。