Abstract
An ethyl acetate-soluble fraction of a methanol extract from the stems of Angelica keiskei was subjected to chromatographic separation to give three new chalcones, designated as xanthokeismins A-C (1-3), in addition to a known chalcone, xanthoangelol B (4). The structures of 1-3 were determined on the basis of the analysis of their spectroscopic data. Compounds 1-4 exhibited potent superoxide-scavenging activity.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 2
Claim · model-written summary
Three new chalcones, xanthokeismins A-C, were identified from Angelica keiskei stems.
- Taxon
- Angelica keiskei
Angelica keiskeit0 - Organ / stage
- stemst0
- Outcome
- three new chalconese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“C-Geranylated Chalcones from the Stems of Angelica keiskei with Superoxide-Scavenging Activity”
e1“three new chalcones, designated as xanthokeismins A-C (1-3)”
e2“The structures of 1-3 were determined on the basis of the analysis of their spectroscopic data”
Claim · model-written summary
Compounds 1-4 from Angelica keiskei stems showed potent superoxide-scavenging activity.
- Taxon
- Angelica keiskeiAngelica keiskeit0
- Outcome
- superoxide-scavenging activitye3
- Qualifier
- potente3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“C-Geranylated Chalcones from the Stems of Angelica keiskei with Superoxide-Scavenging Activity”
e3“Compounds 1-4 exhibited potent superoxide-scavenging activity”