Efomycin g, its preparation and its use as a yield promoter...

Details Efomycin g, its preparation and its use as a yield promoter... Efomycin g, its preparation and its use as a yield promoter...

C - Chemistry, Metallurgy

07

H

195/109, 260/233

C07H 7/06 (2006.01) C07H 15/26 (2006.01) C07H 17/04 (2006.01) C12P 19/12 (2006.01)

Patent

CA 1302927

Abstract An animal growth promoter, efomycin G, is obtained by culturing Streptomycetes strain BS 1261. Efomycin G has the following properties: a) The empirical formula: C53H86O18 b) The mass spectrum (fast atom bombardment) Molecular weight + Na+: 1033 c) The 1H-nuclear magnetic resonance spectrum, stated in parts per million, shown in Figure 1. d) The 13C-nuclear magnetic resonance spectrum, stated in parts per million shown in Figure 2, with chemical shifts of the CC-NMR signals as follows: Image (ppm values are relative to tetramethylsilane at O ppm) e) A UV absorption maximum at 251 - 254 nm in methanolic solution. f) The structure according to Figure 3. Le A 24 398

531597

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