Triterpenoids from the hook-bearing stems of Uncaria rhynchophylla.
J Asian Nat Prod Res
; 26(6): 747-755, 2024 Jun.
Article
in En
| MEDLINE
| ID: mdl-38379373
ABSTRACT
An unprescribed nortriterpenoid with an aromatic E ring, uncanortriterpenoid A (1), together with fourteen known triterpenoids (2-15), were isolated from the hook-bearing stems of Uncaria rhynchophylla Miq. Based on extensive spectroscopic analyses, the NMR data of 2, 5, and 10 in CD3OD were assigned for the first time, and the wrongly assigned δC of C-27 and C-29 of 2 were revised. Among the known compounds, 7, 13, and 15 were isolated from this species for the first time, and 15 represents the first lanostane triterpenoid bearing an extra methylidene at C-24 for the Rubiaceae family. Additionally, compounds 6 and 14 exhibited moderate ferroptosis inhibitory activity, with an EC50 value of 14.74 ± 0.20 µM for 6 and 23.11 ± 1.31 µM for 14.
Key words
Full text:
1
Database:
MEDLINE
Main subject:
Triterpenes
/
Plant Stems
/
Uncaria
Limits:
Humans
Language:
En
Journal:
J Asian Nat Prod Res
Journal subject:
BOTANICA
/
QUIMICA
Year:
2024
Type:
Article
Affiliation country:
China