Four new pregnane C21 steroids isolated from the roots of Cynanchum auriculatum.
Nat Prod Res
; : 1-6, 2023 Dec 15.
Article
em En
| MEDLINE
| ID: mdl-38099336
ABSTRACT
Four new steroids cynansteroid G-I (1-3) and cynansteroid K (4), a new natural product 5,6-deacidizingcaudatin (5), and a known compound glycocaudatin (6), were isolated from the roots of Cynanchum auriculatum. The structures of new compounds were identified by comprehensive spectroscopic analyses, including NMR, HRESI-MS, ECD, UV, and IR spectral data. The cytotoxic activities of all the isolates against two human tumour cell lines (COLO-205 and BGC-823) were screened, unfortunately, which were weaker than positive control.
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MEDLINE
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En
Ano de publicação:
2023
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Article