Tetrahedron p. 1985 - 1992 (1993)
Update date:2022-09-26
Topics:
Canonne
Akssira
Dahdouh
Kasmi
Boumzebra
Bridged N-protected β-amino acids have been regioselectively prepared from the corresponding bicyclic monoesters. The subsequent cyclisation by thionyl chloride produced the desired bridged azatricyclic anhydrides which are versatile substrates for the synthesis of dipeptides; they are also converted into oxathymine and oxauracil by a thermal [4+2] cycloreversion.
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