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.
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
.
DOI: 10.11938/cjmr20182683
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