21,24-Cyclolanostanes revisited: Structural revision and biological evaluation.
Fitoterapia
; 156: 105101, 2022 Jan.
Article
en En
| MEDLINE
| ID: mdl-34921925
Chemical fractionation of the EtOH extract of a medicinal macro fungus, Inonotus obliquus, afforded an array of lanostane-type triterpenoids (1-11) including two new ones (1 and 8). The structures of these compounds were determined on the basis of spectroscopic analyses, single crystal X-ray crystallography of 3-6 and biosynthetic considerations. With the confirmatory structural information provided by X-ray diffraction analysis in hand, several previously reported 21,24-cyclolanostanes, such as inonotsutriols A-C and (20R,21S,24S)-21,24-cyclopenta-3ß,21,25-trihydroxylanosta-8-ene, were structurally corrected. In addition, the NMR data of other types of 21,24-cyclo triterpenoids were also re-examined and structural revisions were thus suggested. Compounds 2, 6 and 8 showed significant cytostatic effects against a panel of tumor cell lines with IC50 values ranging from 7.80 to 18.5 µM. Further assays established that compound 2 exerted promising in vitro anti-breast cancer potential by inhibiting the proliferation and migration of 4T1 cells.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Triterpenos
/
Inonotus
Idioma:
En
Revista:
Fitoterapia
Año:
2022
Tipo del documento:
Article
País de afiliación:
China