Tetrahedron Letters p. 2183 - 2186 (1993)
Update date:2022-08-05
Topics:
Hori, Kozo
Kazuno, Hideki
Nomura, Keiichi
Yoshii, Eiichi
Total synthesis tetronasin (1), a tetronic acid polyether ionophore antibiotic, is reported in which the γ-unsubstituted α-acyltetronic acid structure is constructed by cyclization of a β-keto ester derivative 18 derived from tricyclic aldehyde intermediate 17 by reaction with methyl (diazoacetoxy)acetate in the presence of zirconium tetrachloride.
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