title: Phenolics from extracts of Brahea armata with inhibitory effect against 5alpha-reductase type-II.
abstract: Fractions of the aqueous alcohol extracts of the rind and kernel of Brahea aramata fruits have been investigated for their activity against 5alpha-reductase type II, which is expressed predominantly in the prostate. This isozyme represents a major target for drugs against benign prostate hyperplasia (BPH) and prostate cancer. Also, a structural analysis of the phytophenolics, present in both aqueous alcohol extracts as the major constituents, has led to the isolation of five phenolics, including the new natural product, 4',6'-dimethoxy beta,4,2'-trihydroxy chalcone from the rind extract and three phenolics, including the new natural product, 1-p-hydroxybenzoyl glycerol from the kernel extract. All structures were confirmed by ESI-MS and NMR analysis.
authors.affiliation: Department of Phytochemistry, Division of Pharmaceutical Industries, National Research Centre, Dokki, Cairo, Egypt.
authors.forename: S A
authors.initials: SA
authors.lastname: Hussein
authors.forename: A N
authors.initials: AN
authors.lastname: Hashim
authors.forename: H H
authors.initials: HH
authors.lastname: Barakat
authors.forename: J
authors.initials: J
authors.lastname: Jose
authors.forename: U
authors.initials: U
authors.lastname: Lindequist
authors.forename: M A
authors.initials: MA
authors.lastname: Nawwar
mesh_terms: D013741:3-Oxo-5-alpha-Steroid 4-Dehydrogenase; D058891:5-alpha Reductase Inhibitors; D028023:Arecaceae / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D004791:Enzyme Inhibitors / Q000302:isolation & purification / Q000494:pharmacology*; D005638:Fruit / Q000737:chemistry; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D010636:Phenols / Q000302:isolation & purification / Q000494:pharmacology*; D010936:Plant Extracts / Q000737:chemistry; D011467:Prostate / Q000201:enzymology; D021241:Spectrometry, Mass, Electrospray Ionization; D013056:Spectrophotometry, Ultraviolet
chemical_list: D058891:5-alpha Reductase Inhibitors; D004791:Enzyme Inhibitors; D010636:Phenols; D010936:Plant Extracts; D013741:3-Oxo-5-alpha-Steroid 4-Dehydrogenase; C476567:steroid-5alpha-reductase type 2