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- W621937462 abstract "The configuration of carbon-17 ethylene bond in pregn-17 (20)-ene derivatives has important influence on the pharmacological properties of the compounds. However, the previously used methods for configuration determination of pregn-17 (20)-ene derivatives either are time consuming or cannot obtain certain results. In this paper, we proposed to use 1D selective NOESY to determine the configuration of carbon-17 ethylene bond in E-and Z-guggulsterone. The results showed that, by selective inversion of H-20, the NOE spectra of E-guggulsterone showed only the signal from H-21, while that of Z-guggulsterone showed additional signals from H-18 and H-12. Our results indicated that the selective NOE experiment is a rapid and simple method for configuration determination of the carbon-17 ethylene bond in pregnanes." @default.
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- W621937462 date "2011-03-30" @default.
- W621937462 modified "2023-09-24" @default.
- W621937462 title "天然孕甾烷－17 (20)-烯中C-17位双键构型的快速测定" @default.
- W621937462 hasPublicationYear "2011" @default.
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