• Publications
  • Influence
Theonellamide G, a Potent Antifungal and Cytotoxic Bicyclic Glycopeptide from the Red Sea Marine Sponge Theonella swinhoei
In our search for bioactive metabolites from marine organisms, we have investigated the polar fraction of the organic extract of the Red Sea sponge Theonella swinhoei. Successive chromatographicExpand
  • 41
  • 4
  • PDF
Penicillivinacine, antimigratory diketopiperazine alkaloid from the marine-derived fungus Penicillium vinaceum
Abstract In the course of our ongoing search for biologically active compounds from marine-derived fungi, the organic extract of the marine-derived fungus Penicillium vinaceum species wasExpand
  • 28
  • 4
Bioactive brominated metabolites from the Red Sea sponge Pseudoceratina arabica.
Chemical investigation of the Red Sea sponge Pseudoceratina arabica has led to the isolation and identification of seven brominated compounds including two new bromotyramine derivatives,Expand
  • 19
  • 2
Validated HPLC and HPTLC methods for simultaneous determination of colchicine and khellin in pharmaceutical formulations.
The present work describes validated high-performance liquid chromatography (HPLC) and high-performance thin-layer chromatography (HPTLC) methods for the simultaneous determination of colchicine andExpand
  • 14
  • 2
First detailed quantification of silymarin components in the leaves of Silybum marianum cultivated in egypt during different growth stages
Summary A high performance liquid chromatographic method was developed for the quantitative determination of the active components of silymarin in the leaves of Silybum marianum during differentExpand
  • 7
  • 2
Bioactive alkaloids from the Red Sea marine Verongid sponge Pseudoceratina arabica
Abstract Three new dibrominated alkaloids, ceratinines F–H (2–4), together with the known compounds molokia'iamine (1), psammaplysin A (5), ceratinamide A (6), 19-hydroxyceratinamide A (7),Expand
  • 16
  • 2
Bioactive brominated metabolites from the red sea sponge Suberea mollis.
Reinvestigation of the Red Sea sponge Suberea mollis afforded two new bromotyrosine-derived alkaloids, subereamollines A (1) and B (2), two new brominated phenolic compounds, subereaphenols B (7) andExpand
  • 42
  • 1
Bioactive 2(1H)-Pyrazinones and Diketopiperazine Alkaloids from a Tunicate-Derived Actinomycete Streptomyces sp.
As a part of our ongoing effort to allocate marine microbial bioactive leads, a tunicate-derived actinomycete, Streptomyces sp. Did-27, was investigated. Three new 2(1H)-pyrazinones derivatives,Expand
  • 18
  • 1
  • PDF
Brominated arginine-derived alkaloids from the red sea sponge Suberea mollis.
Investigation of a new collection of the Red Sea sponge Suberea mollis afforded two new brominated arginine-derived alkaloids, subereamines A (1) and B (2), a new brominated phenolic compound,Expand
  • 26
  • 1
Antioxidant and anti-inflammatory effects of Urtica pilulifera extracts in type 2 diabetic rats.
ETHNOPHARMACOLOGICAL RELEVANCE "Urtica pilulifera has been traditionally used in Egyptian system as an herbal remedy to be a diuretic, antiasthmatic, anti-inflammatory, hypoglycemic, hemostatic,Expand
  • 22
  • 1