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New Butyrylcholinesterase Inhibitory Steroid and Peroxy Acid from Leucas urticifolia
Fatima, Itrat,Ahmad, Ijaz,Anis, Itrat,Malik, Abdul,Afza, Nighat,Iqbal, Lubna,Latif, Mehreen 대한약학회 2008 Archives of Pharmacal Research Vol.31 No.8
A new steroid leucisterol (1) and a new peroxy acid urticic acid (2) along with methoxybenzyl benzoate (3), 4-hydroxy benzoic acid (4), $\beta$-sitosterol (5), and ursolic acid (6), have been isolated from the chloroform soluble fraction of the whole plant of Leucas urticifolia. Their structures were elucidated on the basis of nuclear magnetic resonance (1D and 2D NMR) spectral data. Leucisterol showed potent inhibitory activity against butyrylcholinesterase enzyme.
Biologically Active C-Alkylated Flavonoids from Dodonaea viscosa
Akhtar Muhammad,Itrat Anis,Ajmal Khan,Bishnu P. Marasini,Muhammad Iqbal Choudhary,Muhammad Raza Shah 대한약학회 2012 Archives of Pharmacal Research Vol.35 No.3
A new C-alkylated flavonoid (5,7-dihydroxy-3'-(4''-acetoxy-3''-methylbutyl)-3,6,4'-trimethoxyflavone (1), along with two known C-alkylated flavonoids (5,7-dihydroxy-3'-(3-hydroxymethylbutyl)-3,6,4'-trimethoxyflavone (2), 5,7,4'-trihydroxy-3'-(3-hyroxymethylbutyl)-3,6-dimethoxyflavone (3) and two new source C-alkylated flavonoids (5,7-dihydroxy-3'-(2-hydroxy-3-methyl-3-butenyl)-3,6,4'-trimethoxyflavone (4), 5,7,4'-trihydroxy-3,6-dimethoxy-3'-isoprenyl-flavone (5) were isolated from the aerial parts of Dodonaea viscosa. The structures of all compounds were established on the basis of 1D and 2D NMR spectroscopy and mass spectrometry. The isolated compounds were evaluated for their inhibitory effect on urease and α-chymotrypsin enzyme. All the compounds (1-5) exhibited mild inhibition against urease but remained recessive in case of α-chymotrypsin.