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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

One new sesquiterpene dilactone, coccinine ( 1 ) and one new  β -carboline alkaloid, daibucarboline F ( 2 ) together with 10 known compounds; linderane ( 3 ), linderalactone ( 4 ), pseudoneolinderane ( 5 ), linderanlide C ( 6 ), linderanine A ( 7 ), epicatechin ( 8 ), (−)-taxifolin ( 9 ), astilbin ( 10 ), L-quercitrin ( 11 ) and afzelin ( 12 ) were isolated from the stems and leaves of  Neolitsea cassia  (L.) Kosterm (Lauraceae). The structures of ( 1  and  2 ) were established by extensive spectroscopic methods and the known compounds were identified by comparisons with data reported in literature. The relative stereochemistry of compound ( 1 ) was assigned by X-ray diffraction analysis with Cu-K α  irradiation. Compounds ( 3-8 ) and ( 10 ) were evaluated for their  α -glucosidase enzymatic inhibitory activity. Compounds ( 4-6 ), ( 8 ) and ( 10 ) exhibited inhibition towards  α -glucosidase enzymatic activity with IC 50  values ranging from 12.10 to 96.77 μM. This is the first report on the isolation of phytochemicals from  N. cassia  and their bioactivities.

natural product research

New sesquiterpene dilactone and  β -carboline alkaloid and the  α -glucosidase inhibitory activity of selected phytochemicals from  Neolitsea cassia  (L.) Kosterm