Other chemical constituents isolated from Solanum crinitum Lam. (Solanaceae)

Journal of the Brazilian Chemical Society

Marli T. F. Cornelius²  Mário G. De Carvalho²  Tania M. S. Da Silva²  Cassia C. F. Alves²  Ana P. N. Siston²  Kelly Z. Alves²  Carlos M. R. Sant'anna²  Mario B. Neto¹  Marcos N. Eberlin¹  Raimundo Braz-filho¹ 

[1] ,Universidade Federal Rural do Janeiro ICE Departamento de QuímicaSeropédica RJ ,Brazil

关键词: Solanum crinitum;    Solanaceae;    steroidal glycoalkaloids;    flavonoids;    cinnamic acids;   

DOI  :  10.1590/S0103-50532010001200007

来源: SciELO

【 摘 要 】

The phytochemical investigation of Solanum crinitum Lam led to the isolation from the fruit trichomes of four flavonoids, tiliroside (1), astragalin (2), kaempferol (3), biochanin A-7-O-β-D-apiofuranosyl-(1→5)-β-D-apiofuranosyl-(1→6)-β-D-glucopyranoside (7), along with 4-hydroxybenzoic acid (12), and four cinnamic acid derivatives, cis- and trans- coumaric acids (10 and 11) and cis- and trans- ethyl coumarate (8 and 9). Three tri-glycosyl-steroidal alkaloids, solamargine (13), 20-epi-solamargine (14) and solasonine (16) were isolated from the methanolic extract of the green fruits. The derivatives 3,5,7,4'-tretra-O-methyl-kaempferol (4), 3,7,4'-tri-O-methyl-kaempferol (5), 3,7,4'-tri-O-methyl-5-O-acetyl-kaempferol (6), the peracetyl-epi-solamargine (15) and peracetyl-solasonine (17) were prepared. The structures were established through the analysis of their spectral data. The complete ¹H and 13C NMR data assignments of the new peracetyl derivatives of the alkaloids were made.

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