title: One-pot three-component synthesis of novel heterocyclic steroids as a central antioxidant and anti-inflammatory agents.
abstract: Oxidative stress and inflammation have been implicated in several neurodegenerative and developmental brain disorders. The present work was devoted to the design and synthesis of novel steroid derivatives bearing promising heterocyclic moiety that would act to reduce neuro-inflammation and oxidative stress in brain. The novel heterocyclic steroids were synthesized and their chemical structures were confirmed by studying their analytical and spectral data. The tested compounds were assayed in the model of neuro-inflammation produced in rats by cerebral lipopolysaccharide injection. The intracerebral administration of bacterial endotoxin resulted in cerebral inflammatory state evidenced by increased malondialdehyde (MDA), decreased reduced glutathione (GSH) level, increased nitric oxide as well as increased acetylcholinesterase (AChE) activity in the brain. Compounds 6, 10, 8b and 13a markedly increased reduced glutathione. Malondialadehyde and nitric oxide levels were reduced to normal values after treatment with all tested compounds. AChE activity was normalized by compound 8b and reduced to below normal values by compounds 10 and 14a. These results are exciting in that these agents might be useful candidates in treatment of cerebral inflammation.
authors.affiliation: Photochemistry Department, National Research Centre, Dokki, Cairo, Egypt.
authors.forename: Nadia R
authors.initials: NR
authors.lastname: Mohamed
authors.forename: Mervat M
authors.initials: MM
authors.lastname: Abdelhalim
authors.forename: Yasser A
authors.initials: YA
authors.lastname: Khadrawy
authors.forename: Gamal A
authors.initials: GA
authors.lastname: Elmegeed
authors.forename: Omar M E
authors.initials: OM
authors.lastname: Abdel-Salam
mesh_terms: D000818:Animals; D000893:Anti-Inflammatory Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D000975:Antioxidants / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D001921:Brain / Q000166:cytology / Q000187:drug effects; D060326:Chemistry Techniques, Synthetic; D006571:Heterocyclic Compounds / Q000737:chemistry*; D009474:Neurons / Q000187:drug effects / Q000378:metabolism; D018384:Oxidative Stress / Q000187:drug effects; D051381:Rats; D013256:Steroids / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D000893:Anti-Inflammatory Agents; D000975:Antioxidants; D006571:Heterocyclic Compounds; D013256:Steroids