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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/111456
Title: 
Chemical Composition of the Bark of Tetrapterys mucronata and Identification of Acetylcholinesterase Inhibitory Constituents
Author(s): 
Institution: 
  • Universidade Estadual Paulista (UNESP)
  • Univ Lausanne
  • Univ Basel
ISSN: 
0163-3864
Sponsorship: 
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Sponsorship Process Number: 
FAPESP: 10/09780-0
Abstract: 
The secondary metabolite content of Tetrapterys mucronata, a poorly studied plant that is used occasionally in Brazil for the preparation of a psychotropic plant decoction called Ayahuasca, was determined to establish its chemical composition and to search for acetylcholinesterase (AChE) inhibitors. The ethanolic extract of the bark of T. mucronata exhibited in vitro AChE inhibition in a TLC bioautography assay. To localize the active compounds, biological profiling for AChE inhibition was performed using at-line HPLC-microfractionation in 96-well plates and subsequent AChE inhibition bioautography. The analytical HPLC-PDA conditions were transferred geometrically to a preparative medium-pressure liquid chromatography column using chromatographic calculations for the efficient isolation of the active compounds at the milligram scale. Twenty-two compounds were isolated, of which six are new natural products. The structures of the new compounds (9, 10, 16-18, and 20) were elucidated by spectroscopic data interpretation. Compounds 1, 5, 6, 9, and 10 inhibited AChE with IC50 values below 15 mu M.
Issue Date: 
1-Mar-2014
Citation: 
Journal Of Natural Products. Washington: Amer Chemical Soc, v. 77, n. 3, p. 650-656, 2014.
Time Duration: 
650-656
Publisher: 
Amer Chemical Soc
Source: 
http://dx.doi.org/10.1021/np401003p
URI: 
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/111456
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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