-
[show abstract]
[hide abstract]
ABSTRACT: Two new rotenoids, boerharotenoids A (1) and B (2), and four known compounds, boeravinone (3), 5,7,3'-trihydroxycoumaronochromone (4), boeravinone F (5), and eupalitin-3-O-beta-D-galactopyranoside (6), have been isolated from Boerhavia repens and their structures established by spectroscopic (1D and 2D NMR) and mass spectrometric comparison with literature values.
Natural product communications 11/2011; 6(11):1651-2. · 1.24 Impact Factor
-
Mamona Nazir,
Misbah Sultan,
Naheed Riaz, Maria Hafeez,
Hidayat Hussain,
Ishtiaq Ahmed,
Barbara Schulz,
Siegfried Draeger,
Abdul Jabbar,
Karsten Krohn,
Muhammad Ashraf,
Muhammad Saleem
[show abstract]
[hide abstract]
ABSTRACT: Chromatographic purification of the extract of an endophytic fungal culture yielded depsitinuside (1), a new phenolic ester together with ergosterol (2) and (22E,24S)-24-methyl-5-α-cholesta-7,22-diene-3β,5,6β-triol (3). The structure of 1 was elucidated based on 1D, 2D NMR spectroscopy and high-resolution mass spectrometry, whereas the known compounds (2 and 3) were identified by (1)H NMR, mass spectrometry, and in comparison with the literature values. Compound 1 was evaluated for its enzyme inhibitory potential against acetylcholinesterase, butyrylcholinesterase and lipoxygenase, and was found inactive (10%-40% inhibition at a concentration of 2 mg/ml).
Journal of Asian natural products research 10/2011; 13(11):1056-60. · 0.61 Impact Factor
-
Natural Product Communications. 01/2011; 6:1651-1652.
-
J. Chem. Soc. Pak. 01/2011; 33:747-750.
