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2005
Azetidine derivatives
R 0045
Diastereoselective Route to Novel Fused or Bridged Tricyclic β-Lactams Through
Nitrone—Alkene Cycloaddition of 2-Azetidinone-Tethered Alke34- 145 Intramolecular
nylaldehydes — Synthetic Applications to Carbacephams and Cyclic β-Amino
Acid Derivatives. — Basic treatment of 2-azetidinone-tethered alkenylaldehydes with
hydroxylamines offers a convenient, regio- and stereoselective approach to unusually
fused or bridged tricyclic lactams. The resulting products are useful synthons for the
preparation of various functionalized carbacepham and cyclic β-amino acid derivatives. — (ALCAIDE*, B.; SAEZ, E.; Eur. J. Org. Chem. 2005, 8, 1680-1693; Dep.
Quim. Org., Fac. Cienc. Quim., Univ. Complutense, E-28040 Madrid, Spain; Eng.)
— Jannicke
2005
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