Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 74, Issue 5, Pages 2189-2192Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jo8025862
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Funding
- Direccion General de Investiaacion of Spain [CTQ2006-15456-CO4-04BQU]
- Junta de Castilla y Leon
- Consejeria de Educacion y Cultura y Fondo Social Europeo [BU013A06]
- Ministry of University and Research of Italy [PRIN 2006]
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5-Oxobenzo[e] [1.4]diazepine-3-carboxamides were synthesized by sequential Ugi reaction-Staudinger/aza-Wittig cyclization. The pseudopeptidic backbone of the new benzodiazepine derivatives superimposed well with type 1, 1', II, and II' beta-turn motifs. The intermediate Ugi adducts were characterized as two conformers of the enol form by the correlation between H-1 NMR spectra and X-ray diffraction structures of model compounds.
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