title: Clathsterol, a novel anti-HIV-1 RT sulfated sterol from the sponge Clathria species.
abstract: As part of a search for novel inhibitors of humandeficiency virus type 1 (HIV-1) reverse transcriptase (RT), the MeOH-EtOAc extract of a Red Sea sponge, Clathria sp., was shown to be active. Bioassay-guided fractionation of the extract yielded a novel sterol sulfate, clathsterol (1), which is responsible for the activity and is active at a concentration of 10 microM. The structure of 1 was established mainly by interpretation of spectral data and a chemical transformation.
authors.affiliation: School of Chemistry and School of Medicine, Tel-Aviv University, Ramat-Aviv 69978, Israel.
authors.forename: A
authors.initials: A
authors.lastname: Rudi
authors.forename: T
authors.initials: T
authors.lastname: Yosief
authors.forename: S
authors.initials: S
authors.lastname: Loya
authors.forename: A
authors.initials: A
authors.lastname: Hizi
authors.forename: M
authors.initials: M
authors.lastname: Schleyer
authors.forename: Y
authors.initials: Y
authors.lastname: Kashman
mesh_terms: D000818:Animals; D019380:Anti-HIV Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D002845:Chromatography; D019017:Eritrea; D013058:Mass Spectrometry; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D011161:Porifera / Q000737:chemistry*; D018894:Reverse Transcriptase Inhibitors / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D013055:Spectrophotometry, Infrared; D013261:Sterols / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D013329:Structure-Activity Relationship
chemical_list: D019380:Anti-HIV Agents; D018894:Reverse Transcriptase Inhibitors; D013261:Sterols; C442562:clathsterol