13C NMR spectra and structure of some coumarin derivatives
β Scribed by A. Z. Abyshev; V. P. Zmeikov; I. P. Sidorova
- Book ID
- 112377782
- Publisher
- Springer
- Year
- 1982
- Tongue
- English
- Weight
- 349 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0009-3130
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A general strategy, using well established techniques, is outlined for the assignment of signals in the 13C NMR spectra of the trichothecene mycotoxins and some related rearrangement products. Heteronuclear NOE difference spectra were employed to assign resonances from quaternary carbons. An example
The 13CNMR spectra were obtained at 25.2MHz on a Varian XL-100-15 spectrometer, with minor hardware and software modifications to allow phase cycling of the transmitter, operating in the l T mode and using a 620L-100 computer interfaced to a Sykes 7000 dual disk drive. Samples were spun in 5 mm tube