English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

On the basis of intensive interpretation of the  1 H NMR spectroscopic data, the ring A conformation of aconine (1) was speculated as twist boat in CDCl 3 , and as chair or twist boat in acetone-d 6  and pyridine-d 5 . The ring A of pseudaconine (2) adopts the chair conformation in CDCl 3 , acetone- d 6 , and pyridine- d 5 . Accordingly, the boat conformation of ring A in these two diterpenoid alkaloids in CDCl 3  reported in the literature [1] should be revised. The difference in  13 C NMR data for the same compound (1 or 2) in two different solvents (CDCl 3 , pyridine- d 5 ) can be attributed to solvent effects.

Ring a Conformation of Aconine and Pseudaconine in CDCl3

Ring a Conformation of Aconine and Pseudaconine in CDCl₃