title: [Transformation of betulin diacetate by the Prins reaction].
abstract: The interaction of betulin diacetate with formaldehyde by the Prins reaction in various media was studied. As a result, 3beta,28-di-O-acetyl-30-hydroxymethyl-(20)29-lupene, 3beta-acetyl-28-hydroxy-(20)29-lupene, and 3beta,28-di-O-acetoxy-19-(5',6'-dihydro-2'H-pyran-4'-yl)-20,29,30-trinorlupane were obtained.
authors.forename: A V
authors.initials: AV
authors.lastname: Rybina
authors.forename: I S
authors.initials: IS
authors.lastname: Shepelevich
authors.forename: R F
authors.initials: RF
authors.lastname: Talipov
authors.forename: F Z
authors.initials: FZ
authors.lastname: Galin
authors.forename: L V
authors.initials: LV
authors.lastname: Spirikhin
mesh_terms: D000085:Acetates / Q000737:chemistry*; D004952:Esters; D005557:Formaldehyde / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013055:Spectrophotometry, Infrared; D014315:Triterpenes / Q000737:chemistry*; D000094062:Betulinic Acid
chemical_list: D000085:Acetates; D004952:Esters; D005557:Formaldehyde; D014315:Triterpenes; C002503:betulin; D000094062:Betulinic Acid