title: Biological and pharmacological activities and further constituents of Hyptis verticillata.
abstract: Several extracts of Hyptis verticillata and isolated compounds were evaluated for their anti-inflammatory, antibacterial, antisecretory, and cytotoxic properties. The aerial parts yielded (R)-5-hydroxypyrrolidin-2-one and essential oil with the main components alpha-pinene, beta-pinene, and thymol. Spectroscopic methods (UV, IR, 1H-NMR, 13C-NMR, mass, CD) fully characterized (R)-5-hydroxypyrrolidin-2-one, as it was isolated by a bioassay guided fractionation. The essential oil, (R)-5-hydroxypyrrolidin-2-one, as well as the previously isolated rosmarinic acid and dehydropodophyllotoxine contributed to the antibacterial effects of H. verticillata. Furthermore, rosmarinic acid showed significant capillary stabilizing effects. Sideritoflavone inhibited prostaglandin synthase to a significant extent and had antisecretory effects comparable to those of NPPB. The cytotoxicity of the aqueous extract, as demonstrated using KB and HT 29 cell lines, may be of toxicological relevance in cases of internal application.
authors.affiliation: Institut für Pharmazeutische Biologie, Albert-Ludwigs-Universität, Freiburg, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Kuhnt
authors.forename: A
authors.initials: A
authors.lastname: Pröbstle
authors.forename: H
authors.initials: H
authors.lastname: Rimpler
authors.forename: R
authors.initials: R
authors.lastname: Bauer
authors.forename: M
authors.initials: M
authors.lastname: Heinrich
mesh_terms: D000818:Animals; D000890:Anti-Infective Agents / Q000302:isolation & purification* / Q000494:pharmacology; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000302:isolation & purification* / Q000494:pharmacology; D000970:Antineoplastic Agents / Q000302:isolation & purification* / Q000494:pharmacology; D002470:Cell Survival / Q000187:drug effects; D002642:Chick Embryo; D003106:Colon; D016861:Cyclooxygenase Inhibitors / Q000302:isolation & purification* / Q000494:pharmacology; D006801:Humans; D066298:In Vitro Techniques; D007413:Intestinal Mucosa / Q000187:drug effects / Q000378:metabolism; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D010946:Plants, Medicinal / Q000737:chemistry*; D011760:Pyrrolidinones / Q000302:isolation & purification* / Q000494:pharmacology; D011817:Rabbits; D013053:Spectrophotometry; D014407:Tumor Cells, Cultured
chemical_list: C094632:5-hydroxypyrrolidin-2-one; D000890:Anti-Infective Agents; D000894:Anti-Inflammatory Agents, Non-Steroidal; D000970:Antineoplastic Agents; D016861:Cyclooxygenase Inhibitors; D011760:Pyrrolidinones