A Spectroscopic Study on Tautomerism of Selaginellins from Selaginella

doi:10.11938/cjmr20182683

Abstract

Abstract: Ultraviolet-visible and nuclear magnetic resonance (NMR) spectroscopy was used to investigate the effects of pH, solvent and temperature on the tautomeric equilibrium of selaginellins from Selaginella. The results demonstrated that the tautomerism of selaginellins could be catalyzed by acid, base and protic solvent. Variable-temperature ¹H NMR experiments demonstrated that the tautomerism was interrupted when the temperature fell below 233 K.

Key words: nuclear magnetic resonance (NMR), ultraviolet-visible absorption spectrum, selaginellin, tautomerism

CLC Number:

O482.53

CAO Yuan, WU Yong-ping, CHEN Dong-jun. A Spectroscopic Study on Tautomerism of Selaginellins from Selaginella[J]. Chinese Journal of Magnetic Resonance, 2019, 36(2): 155-163.

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