نتایج جستجو برای: lignans

تعداد نتایج: 1603  

2012
Zsuzsanna Kuklenyik Xiaoyun Ye John Adam Reich Larry L. Needham Antonia M. Calafat

methods coupled to isotope dilution–high-performance liquid chromatography–tandem mass spectrometry for measuring four isoflavones (daidzein, genistein, equol, and O-desmethylangolensin) and two lignans (enterolactone and enterodiol) in urine are developed. The SPE recoveries for the online SPE method are excellent for most analytes (83–94%) and somewhat lower for enterolactone (61%). The recov...

Journal: :European journal of medicinal chemistry 2013
Han-Wei Liu Xiu-Zhu Yu Daniele Padula Gennaro Pescitelli Zhi-Wei Lin Fei Wang Kai Ding Ming Lei Jin-Ming Gao

A new dibenzocyclooctene-type lignan, named schisandrin A1 (1), together with nine known lignans (2-10), was isolated from the stems of Schisandra sphenathera. The structure of schisandrin A1, which contains a spirocyclic epoxy unit, was established by means of spectroscopic methods. The absolute configurations of schisandrin A1 (1) and schisantherin A (2) were determined by electronic circular...

Journal: :Journal of food science and technology 2014
Ankit Goyal Vivek Sharma Neelam Upadhyay Sandeep Gill Manvesh Sihag

Flaxseed is emerging as an important functional food ingredient because of its rich contents of α-linolenic acid (ALA, omega-3 fatty acid), lignans, and fiber. Flaxseed oil, fibers and flax lignans have potential health benefits such as in reduction of cardiovascular disease, atherosclerosis, diabetes, cancer, arthritis, osteoporosis, autoimmune and neurological disorders. Flax protein helps in...

1995
ALEJANDRO F. BARRERO ALl HAIDOUR JUAN M. CUERVA

Abst rac t -From the chloroform extract of the wood of Abies rnarocana, consisting mainly of lignans, the acetoxyl derivatives of the new sesquilignans, 4,4",7",9,9"-pentahydroxy-3,3',3"-trimethoxy-4',8":7,9'-bis-epoxy-8,8'-sesquineolignan and 4•4"•7"•9•9'•9"-hexahydr•xy-3•3'•3••-trimeth•xy-4'•8"-ep•xy-8•8'-sesquine••ignan were isolated; the trivial names, sesquimarocanols A and B, were subsequ...

Journal: :Planta medica 2014
Van Trinh Thi Thanh Van Cuong Pham Huong Doan Thi Mai Marc Litaudon Françoise Guéritte Van Hung Nguyen Van Minh Chau

Eight new aryltetralin lignans, cleisindosides A-F (1-6), picroburseranin (7), and 7-hydroxypicropolygamain (8), were isolated from the fruits of Cleistanthus indochinensis (Euphorbiaceae). The structures of the isolates were established on the basis of their one- and two-dimensional NMR spectral data, as well as their mass spectrometric data. Compound 7 was found to have potent cytotoxicity ag...

Journal: :Journal of agricultural and food chemistry 2012
Pepijn Prinsen Ana Gutiérrez José C del Río

The composition of lipophilic extractives in the cortex and pith of elephant grass ( Pennisetum purpureum Schumach.) stems was thoroughly studied by gas chromatography-mass spectrometry. The predominant compounds were fatty acids followed by sterols (in free and conjugated forms as esters and glycosides). Other steroid compounds, as steroid hydrocarbons and ketones, were also present. Addition...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2001
A Ivanova B Mikhova T Stambolijska I Kostova

Two new lignan glycosides of dibenzylbutyrolactol type (haplomarin) and arylnaphthalene type (haploborin) were isolated from the aerial parts of Haplophyllumn suaveolens together with the known arylnaphthalene lignan glycoside arabelline and hydroxycoumarin glycoside xeroboside. So far arabelline is found only in H. buxbaunii. This is the first report of the isolation of xeroboside from Haploph...

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