关键词: 茄科, 旋花茄, 甾体皂苷

Abstract: One new steroidal glycoside, 26-O-β-D-glucopyranosyl - ( 25 R)-furost-3β, 22ξ, 26-triol-5- ene-3-α-L-rhamnopyranosyl-(1-2) -[3 - O - (3- O-acetyl ) -α-L-rhamnopyranosyl -( 1-4 ) ] -β-D-glucopyranoside ( 1 ) were isolated from the fresh fruits of the edible plant Solanum spirale Roxb., together with two known ones, 26- O-β-D-glucopyranosyl - (25 R)-furost-22ξ-methoxyl-3β, 26-diol-5- ene-3- O-α-L-rhamnopyranosyl - (1-2)-β-D-glucopyranoside (2) and 26- O-β-D-glucopyranosyl-(25 R)-furost-3β, 22ξ, 26-triol-5-ene-3-O-α-L-rhamnopyranosyl -( 1-2 )- [α-L-rhamnopyranosyl - ( 1-4 ) ]-β Dglucopyranoside (protodioscin) (3). Their structures were elucidated by spectroscopic methods, especially 2D NMR. The known compounds 2-3 were isolated from the title plant for the first time.

Key words: Solanaceae