Shindo Mitsuru, Itoh Kotaro, Tsuchiya Chinatsu, Shishido Kozo
Institute for Medicinal Resources, University of Tokushima, Sho-machi 1, Japan.
Org Lett. 2002 Sep 5;4(18):3119-21. doi: 10.1021/ol0264455.
[reaction: see text] The inverse electron-demand 1,3-dipolar cycloaddition of nitrones with ynolates, followed by quenching with t-BuOH, produced substituted 5-isoxazolidinones with good trans-selectivity. These products were easily converted into beta-amino acids.
[反应:见正文] 硝酮与烯醇化物的逆电子需求1,3 - 偶极环加成反应,随后用叔丁醇淬灭,生成具有良好反式选择性的取代5 - 异恶唑烷酮。这些产物很容易转化为β - 氨基酸。