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Beilstein J. Org. Chem. 2013, 9, 1899–1906, doi:10.3762/bjoc.9.224
Graphical Abstract
Figure 1: Some antibiotic natural and unnatural tetramic acids.
Scheme 1: Synthesis of simple 3-carboxamide tetramic acids. Reaction conditions: (a) triethylamine (2.0 equiv...
Scheme 2: Synthesis of N-alkyl 3-carboxamide tetramic acid. Reaction conditions: (a) 1. glycine methyl ester∙...
Scheme 3: Synthesis of C(5)-alkyl 3-carboxamide tetramic acids. Reaction conditions: (a) butyl chloroformate ...
Figure 2: Tautomerism of tetramates.