Results 161 to 170 of about 15,568 (207)
Some of the next articles are maybe not open access.
Absolute configuration assignment of stigmasterol oxiranes
Chirality, 2021AbstractDiastereoisomeric stigmasterol oxiranes 4, 5, 8, and 9 are known phytosterol oxidation products (POPs) that have been evaluated for their cytotoxicity, although the results are of limited significance since, in most cases, they were evaluated as mixtures.
Miguel Á. Fuentes‐Figueroa +2 more
openaire +2 more sources
Polyamine conjugates of stigmasterol
Steroids, 2012Three new polyamine conjugates with stigmasterol [(3β,22E)-stigmasta-5,22-dien-3-ol] were synthesized and subjected to basic antimicrobial and cytotoxic tests. The conjugate derived from spermine, (3β,22E)-stigmasta-5,22-dien-3-yl 4(12-amino-4,9-diaza-dodecylamino)-4-oxobutanoate (5c), displayed considerable antimicrobial activity on Staphylococcus ...
Vida, Norbert +6 more
openaire +4 more sources
Lipids, 1973
AbstractHydrogenations of stigmasterol over 5% Pd/C, 5% Ru/C, Pt, Raney Ni, Raney Co, Ni/kieselguhr, and tris(triphenylphosphine)chlororhodium catalysts and with diimide generated from hydrazine andp‐toluenesulfonylhydrazide were studied to determine the best conditons for the selective reduction of the Δ22 double bond.
Henry W. Kircher, Fumiko U. Rosenstein
openaire +1 more source
AbstractHydrogenations of stigmasterol over 5% Pd/C, 5% Ru/C, Pt, Raney Ni, Raney Co, Ni/kieselguhr, and tris(triphenylphosphine)chlororhodium catalysts and with diimide generated from hydrazine andp‐toluenesulfonylhydrazide were studied to determine the best conditons for the selective reduction of the Δ22 double bond.
Henry W. Kircher, Fumiko U. Rosenstein
openaire +1 more source
Stigmasterol Removal by an Aerobic Treatment System
2023Stigmasterol is a phytosterol contained in kraft mill effluent that is able to increase over 100% after aerobic biological treatment. This compound can act as an endocrine disrupter as its structure is similar to that of cholesterol. Furthermore, stigmasterol contained in kraft mill effluent shows high toxicity (25-fold more than β-sitosterol) to ...
Soledad, Chamorro +2 more
openaire +2 more sources
Biosynthesis of Stigmasterol in Tomato Fruits
Science, 1961The presence of stigmasterol in tomato fruits was demonstrated. Labeled mevalonic acid was incorporated into this sterol, while sodium acetate was not. The identity of the isolated product was established by rigorous purification to constant specific activity, melting point determinations, and infrared ...
Bennett, Raymond D. +3 more
openaire +3 more sources
Stigmasterol Tetracosanoate, a New Stigmasterol Ester from the Egyptian Blepharis ciliaris
Drug Research, 2014A new stigmasterol ester: stigmasterol tetracosanoate (3), along with 7 compounds: β-sitosterol (1), stigmasterol (2), (2S,3S,4R)-2[(2'R)-2'-(hydroxyeicosanoyl amino) octadecane-1,3,4-triol (4), apigenin (5), β-sitosterol-3-O-β-D-glucopyranoside (6), stigmasterol-3-O-β-D-glucopyranose (7), and apigenin-7-O-β-D-glucopyranoside (8) were isolated from ...
M A, El-Shanawany +3 more
openaire +2 more sources
Intermediates of stigmasterol metabolism in spodoptera littoralis
Steroids, 1989Stigmasterol-24,28-epoxide, 22E-stigmasta-5,22,24(28E)-trien-3 beta-ol, and 22E-cholesta-5,22,24-trien-3 beta-ol were identified as normal metabolites of [3H]stigmasterol in Spodoptera littoralis larvae. Relative concentrations of all three of these metabolites increased when a diazasterol inhibitor was fed in combination with stigmasterol in the ...
J A, Svoboda +3 more
openaire +2 more sources
Synthesis and Characterization of Stigmasterol Oxidation Products
Journal of Agricultural and Food Chemistry, 2010The synthesis and structural characterization of a series of oxides of stigmasterol is described providing a valuable series of reference standards for these oxides, analogous to the cholesterol oxidation products (COPs) which have been shown to have detrimental biological effects.
David A, Foley +4 more
openaire +2 more sources
The metabolism of stigmasterol and cholesterol by Paramecium aurelia
Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1971Abstract 1. 1. Paramecium aurelia , stock 299, can be grown in axenic culture only when supplemented with fatty acids and an appropriate sterol. The metabolic fate of nutritionally active stigmasterol and inactive cholesterol was determined. 2. 2. Stigmasterol is converted to 7-dehydrostigmasterol.
R L, Conner +3 more
openaire +2 more sources
Food ChemistryMorphological characterization of liposomes encapsulated with stigmasterol and its myristic and oleic esters. Results of thermo-oxidative degradation of stigmasterol, fatty acids and identification of oxidized derivatives.
Magdalena Rudzińska +2 more
exaly +2 more sources