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Ring A conformation of aconine and pseudaconine in CDCl3
- Source :
- Natural product communications. 9(6)
- Publication Year :
- 2014
-
Abstract
- On the basis of intensive interpretation of the 1H NMR spectroscopic data, the ring A conformation of aconine (1) was speculated as twist boat in CDCl3, and as chair or twist boat in acetone-d6 and pyridine-d5. The ring A of pseudaconine (2) adopts the chair conformation in CDCl3, acetone-d6, and pyridine-ds. Accordingly, the boat conformation of ring A in these two diterpenoid alkaloids in CDCl3 reported in the literature [1] should be revised. The difference in 13C NMR data for the same compound (1 or 2) in two different solvents (CDCl3, pyridine-d5) can be attributed to solvent effects.
- Subjects :
- Magnetic Resonance Spectroscopy
Molecular Structure
Aconitine
Diterpenes
Subjects
Details
- ISSN :
- 1934578X
- Volume :
- 9
- Issue :
- 6
- Database :
- OpenAIRE
- Journal :
- Natural product communications
- Accession number :
- edsair.pmid..........346638e836e381fa8417cdb940f527d1