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Gmelinosides A-L, twelve acylated iridoid glycosides from Gmelina arborea.
Besides the known iridoids 6-O-alpha-L-rhamnopyranosylcatalpol (1), 6-O-(3"-O-trans-feruloyl)-alpha-L-rhamnopyranosylcatalpol (14), 6-O-(2"-O-acetyl-3",… Expand
Novel oxidations of (+)-catechin by horseradish peroxidase and laccase.
Horseradish peroxidase (HRP; EC 22.214.171.124) catalyzed the H(2)O(2)-dependent oxidative coupling of (+)-catechin 1 to form three different biphenyl C-C dimers 2-4, whereas Rhus vernicifera laccase… Expand
Combination of vitamin E and clomiphene citrate in treating patients with idiopathic oligoasthenozoospermia: A prospective, randomized trial
- M. G. El-Sheikh, M. Hosny, A. Elshenoufy, H. Elghamrawi, A. Fayad, S. Abdelrahman
- 1 September 2015
The most common cause of male infertility is idiopathic oligoasthenozoospermia. Empirical medical treatment for idiopathic male infertility is still a controversial issue. The aim of this study was… Expand
A New Flavonoid C-Glycoside from Celtis australis L. and Celtis occidentalis L. Leaves and Potential Antioxidant and Cytotoxic Activities
- T. El-Alfy, H. El-Gohary, N. Sokkar, M. Hosny, D. A. Al-Mahdy
- Biology, Medicine
- Scientia pharmaceutica
- 6 October 2011
A major development over the past two decades has been the realization that free radical induced lipid peroxidation and DNA damage are associated with major health problems, e.g. cancer and ageing.… Expand
Aspergillus endocarditis: Diagnostic criteria and predictors of outcome, A retrospective cohort study
Background Fungal Endocarditis (FE), a relatively rare disease, has a high rate of mortality and is associated with multiple morbidities. Aspergillus endocarditis (AE) is severe form of FE. Incidence… Expand
Hydroxylations and methylations of quercetin, fisetin, and catechin by Streptomyces griseus.
Preparative-scale biotransformation of quercetin (1), fisetin (7), and (+)-catechin (12) with Streptomyces griseus (ATCC 13273) resulted in the isolation and characterization of nine known… Expand
Novel isoflavone, cinnamic acid, and triterpenoid glycosides in soybean molasses.
Seven known isoflavones, genistein (4), daidzein (5), glycitein (6), formononetin (7), genistin (8), daidzin (9), and glycitein 7-O-beta-D-(6' '-O-acetylglucopyranoside) (10), ferulic acid, and two… Expand
Structures of Ferulic Acid Glycoside Esters in Corn Hulls
1D-NMR (1H and 13C) and 2D-NMR spectroscopy as well as chemical means have been used to determine the structures of three new feruloylated disaccharides derived from acid hydrolysis of corn hulls.… Expand
Oxidation, reduction, and methylation of carnosic acid by Nocardia.
- M. Hosny, H. Johnson, Amanda Ueltschy, J. Rosazza
- Chemistry, Medicine
- Journal of natural products
- 31 July 2002
Preparative-scale incubations with Nocardia sp. NRRL 5646 were conducted to produce new derivatives of the abietane diterpene chemoprotectant and antioxidant carnosic acid (1). Reductive… Expand
(−)-Catechin glycosides from Ulmus davidiana
- M. Hosny, Ming-Shan Zheng, +4 authors S. Lee
- Chemistry, Medicine
- Archives of pharmacal research
- 1 June 2014
Extensive chromatographic separation of the n-BuOH soluble fraction obtained from the stem and root barks of U. davidiana resulted in five hitherto unknown compounds together with a known one… Expand