title: Synthesis of 5,19-(2,6-Dimethylpyridin-4-yl)-trisnorlupane and Oleanane.
abstract: Acetylation of the 3,4-seco-derivatives of betulin, allobetulin and 28-oxyallobetulone gave the 5,19-(2,6-dimethylpyridin-4-yl)-4,23,24,20,29,30-hexanorlupane, and 5-(2,6-dimethylpyridin-4-yl)-4,23,24-trisnor-derivatives of oleanane and ursane.
authors.forename: Elena V
authors.initials: EV
authors.lastname: Salimova
authors.forename: Elena V
authors.initials: EV
authors.lastname: Tretyakova
authors.forename: Lyudmila V
authors.initials: LV
authors.lastname: Parfenova
authors.forename: Victor N
authors.initials: VN
authors.lastname: Odinokov
mesh_terms: D015394:Molecular Structure; D009828:Oleanolic Acid / Q000031:analogs & derivatives* / Q000138:chemical synthesis; D014315:Triterpenes / Q000138:chemical synthesis*
chemical_list: C000608376:5,19-(2,6-dimethylpyridin-4-yl)-trisnorlupane; D014315:Triterpenes; C413246:oleanane; D009828:Oleanolic Acid