Steroid glycosides of the seeds ofNicotiana tabacum. II. The structures of nicotianosides C and F

Autor: V. I. Grishkovets, S. A. Shvets, O. N. Gutsu, P. K. Kintya
Rok vydání: 1996
Předmět:
Zdroj: Chemistry of Natural Compounds. 31:332-335
ISSN: 1573-8388
0009-3130
Popis: From the seeds of tobacco Nicotiana tabacumL. we have isolated two new steroid glycosides, nicotianosidesC andF. The structures of the glycosides have been shown on the basis of chemical transformations and spectral characteristics. Nicotianoside C is a steroid glycoside of the spirostan series and has the structure of (25S)-5α-spirostan-3s-ol3-O-[α-L-rhamnopyranosyl-(1 → 2)]-[α-L-rhamnopyranosyl-(1→ 4)]-s-Dglucopyranoside), and nicotianoside F is (25S)-5α furostan-3s, 22α, 26-triol 3-O-[α-L-rhamnopyranosyl-(1 2)1-[α-L-rhamnopyranosyl-(1 → 4)1-s D-glucopyranoside) 26-O-s-D-glucopyranoside.
Databáze: OpenAIRE