Dichondra repens Forst.

Nota de alcance

PARTE UTILIZADA= Used part : Partes aéreas.

ACCIÓN FARMACOLÓGICA= Pharmacological action
Se lavan llagas y heridas infectadas.

COMPOSICIÓN QUÍMICA= Chemical composition: OBJECTIVE: To investigate the isolation and structural elucidation of the whole herb of Dichondra repens Forst. METHODS: Column chromatography of silica gel was used to separate the chemical constituents. IR, MS, 1H-NMR, 13C-NMR were used to determine the structures of the isolated constituents. RESULTS: Seven compounds were identified by spectral analyses as β-sitosterol(I), vanillin(II), octatriacontane(III), maltol (IV), ursolic acid (V), scopoletin (VI) and umbelliferone (VII) respectively. CONCLUSION: All compounds were obtained from Dichondra repens Forst for the first time. .

ZONA GEOGRÁFICA= Geografical zone: Uruguay. 

Nota de alcance

DIVERSIDAD GENÉTICA Y MEJORAMIENTO DE PLANTAS MEDICINALES= Medicinal plants and improvement of medicinal herbs:

The N-terminal 40 amino acid sequences of the small subunit of ribulose biphosphate carboxylase were detd. for 13 species of Solanum, 1 other species of Solanaceae and 2 of Convolvulaceae.  From these, and previously published sequences from Solanaceae, a minimal phylogenetic tree is derived.  This agrees well with current taxonomy; the first dichotomy in the Solanaceae tree is between the 2 subfamilies Solanoideae and Cestroideae; within Solanum, the subgenera Solanum and Leptostemonum sep. dichotomously; within subgenus Leptostemonum, the African and Asian species diverge from the Australian.  Within the Australian species of subgenus Leptostemonum, 2 unusual substitutions were noted.  The implications for the hypotheses of a mol. evolutionary clock and of biogeog. dispersal by continental drift are discussed.  

Nota bibliográfica

1) GONZALEZ, Matías ; LOMBARDO, Atilio ; VALLARINO, Aida. Plantas de la medicina vulgar del Uruguay. Montevideo : Talleres Gráficos, 1937, p.96-97.

2) LIU, Y.-M., et al. Studies on chemical constituents of Dichondra repens. Chinese Pharmaceutical Journal. 2002, vol.37, nº8, p.577-579.
3) MARTIN, P. G., et al. The study of plant  phylogeny  using amino acid sequences of ribulose-1,5-bisphosphate carboxylase.  VI.  Some Solanum and allied species from different continents. Australian Journal of Botany. 1986, vol.34, nº2, p.187-95.

Dichondra repens Forst.
Término aceptado: 14-Dic-2007