title: Characterization of 3alpha-acetyl-11-keto-alpha-boswellic acid, a pentacyclic triterpenoid inducing apoptosis in vitro and in vivo.
abstract: 3Alpha-acetyl-11-keto-alpha-boswellic acid (3alpha-acetoxy-11-oxo-olean-12-en-24-oic acid, 1) was synthesized by a radical-type reaction using bromine and 3alpha-acetyl-alpha-boswellic acid isolated from the oleo-gum-resin of Boswellia carterii. 1D and 2D NMR (COSY, HMBC, ROESY) at 500 MHz were used for shift assignments and structure verification. The compound investigated is present in a herbal preparation extracted from Boswellia serrata oleo-gum-resin, it inhibits the growth of chemotherapy-resistant human PC-3 prostate cancer cells in vitro and induces apoptosis as shown by activation of caspase 3 and the induction of DNA fragmentation. In addition, compound 1 is active IN VIVO as shown by inhibition of proliferation and induction of apoptosis in PC-3 prostate cancer cells xenotransplanted onto the chick chorioallantoic membrane.
authors.affiliation: Institute of Pharmacology of Natural Products and Clinical Pharmacology, University of Ulm, Ulm, Germany.
authors.forename: Berthold
authors.initials: B
authors.lastname: Büchele
authors.forename: Waltraud
authors.initials: W
authors.lastname: Zugmaier
authors.forename: Aidee
authors.initials: A
authors.lastname: Estrada
authors.forename: Felicitas
authors.initials: F
authors.lastname: Genze
authors.forename: Tatiana
authors.initials: T
authors.lastname: Syrovets
authors.forename: Christian
authors.initials: C
authors.lastname: Paetz
authors.forename: Bernd
authors.initials: B
authors.lastname: Schneider
authors.forename: Thomas
authors.initials: T
authors.lastname: Simmet
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D017209:Apoptosis / Q000187:drug effects*; D029743:Boswellia; D045744:Cell Line, Tumor / Q000187:drug effects; D019008:Drug Resistance, Neoplasm; D006801:Humans; D008297:Male; D008517:Phytotherapy; D010936:Plant Extracts / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D011471:Prostatic Neoplasms / Q000188:drug therapy; D014315:Triterpenes / Q000008:administration & dosage / Q000494:pharmacology / Q000627:therapeutic use
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D010936:Plant Extracts; D014315:Triterpenes