Molecules p. 1825 - 1833 (2011)
Update date:2022-08-16
Topics:
Peixoto, Juliana A.
Silva, Marcio Luis Andrade E
Crotti, Antonio E. M.
Veneziani, Rodrigo Cassio Sola
Gimenez, Valeria M. M.
Januario, Ana H.
Groppo, Milton
Magalhaes, Lizandra G.
Dos Santos, Fransergio F.
Albuquerque, Sergio
Da Silva Filho, Ademar A.
Cunha, Wilson R.
The in vitro activity of the crude hydroalcoholic extract of the aerial parts of Miconia langsdorffii Cogn. was evaluated against the promastigote forms of L. amazonensis, the causative agent of cutaneous leishmaniasis in humans. The bioassayguided fractionation of this extract led to identification of the triterpenes ursolic acid and oleanolic acid as the major compounds in the fraction that displayed the highest activity. Several ursolic acid semi-synthetic derivatives were prepared, to find out whether more active compounds could be obtained. Among these ursolic acid-derived substances, the C- 28 methyl ester derivative exhibited the best antileishmanial activity.
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