Synthesis and spectroscopic characterisation of <sup>13</sup>
C-labelled ubiquinone-0 and ubiquinone-10
作者:W.B.S. van Liemt、W.F. Steggerda、R. Esmeijer、J. Lugtenburg
DOI:10.1002/recl.19941130305
日期:——
(3-13C)-, (3-13CH3)-, (4-13C), and (13CH3O)2- ubiquinone-10 and the corresponding (1-13C)-, (6-13C)-, (5-13C)-, (5-13CH3)-, (4-13C)-, and (13CH3O)2-ubiquinone-0 have been synthesised from simple labelled starting materials via a single reaction scheme. The ubiquinones have been characterised using mass spectrometry, 1H NMR and 13C NMR. The spectroscopic results indicate that, within experimental error
The incorporation of thymine and β-aminoisobutyrate into the polyether antibiotic, monensin-A
作者:David O'Hagan、Sarah V. Rogers、Kevin A. Reynolds、Gordon R. Duffin
DOI:10.1039/c39940001577
日期:——
The isotopes from DL-[3-13C]-β-aminoisobutyrate and [13C2H3-methyl]thymine are efficiently incorporated into the seven propionate, and to a lesser extent the butyrate, derived methyl groups in monensin-A from Streptomyces cinnamonensis; catabolic pathways from thymine to methylmalonyl-CoA and isobutyryl-CoA are implicated in antibiotic producing Actinomycetes.