1.
Chem Biodivers
; 21(3): e202400017, 2024 Mar.
Artigo
em Inglês
| MEDLINE
| ID: mdl-38321767
RESUMO
Three undescribed isosteroidal alkaloids, przewalskines A-C (1-3), as well as seven known alkaloids (4-10) were obtained from Fritillaria przewalskii bulbs. Their structures were deduced by extensive HRESIMS, 1D NMR, and 2D NMR analyses, and their bioactivities were evaluated involving the anti-inflammatory and inhibitory potencies on AChE, BChE, and Aß aggregation. Compound 4 revealed the potent effect on inhibiting Aß aggregation activity with IC50 value of 33.1â µM, AChE activity with IC50 value of 6.9â µM, and also showed NO release inhibitory acitivity with IC50 value of 32.6â µM. These findings contribute new multi-.target anti-AD agents and embody the chemical diversity of F. przewalskii.