title: Transformation of cholanic acid derivatives into pharmacologically active esters of phenolic acids by heterogeneous Wittig reaction.
abstract: Steroid esters of cynnamic acid derivatives have been synthesized by a heterogeneous Wittig reaction under sonochemical conditions from the corresponding triphenylphosphonium bromides and unprotected phenolic aldehyds using K2CO3 as a base. 5 beta-Cholan-3 alpha, 7 alpha, 12 alpha, 24-E-ferulate (11') exhibited a marked inhibitory effect on influenza virus A. The synthetic 3 alpha, 24-E-diferulates of 5 beta-cholan-3 alpha, 24- diol, 5 beta-cholan-3 alpha, 12 alpha, 24-triol and 5 beta-cholan-3 alpha, 7 alpha, 12 alpha, 24-tetrol (8, 9 and 12) showed antitumor activity on leukemia P-388 in mice.
authors.affiliation: Institute of Organic Chemistry with Center of Phytochemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria.
authors.forename: A
authors.initials: A
authors.lastname: Ivanova
authors.forename: T
authors.initials: T
authors.lastname: Milkova
authors.forename: A S
authors.initials: AS
authors.lastname: Galabov
authors.forename: L
authors.initials: L
authors.lastname: Nikolaeva
authors.forename: E
authors.initials: E
authors.lastname: Voynova
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000737:chemistry* / Q000627:therapeutic use / Q000633:toxicity; D000998:Antiviral Agents / Q000737:chemistry* / Q000494:pharmacology; D002460:Cell Line; D002793:Cholic Acids / Q000737:chemistry*; D002934:Cinnamates / Q000737:chemistry* / Q000627:therapeutic use* / Q000633:toxicity; D009980:Influenza A virus / Q000187:drug effects; D007941:Leukemia P388 / Q000188:drug therapy*; D008297:Male; D051379:Mice; D008811:Mice, Inbred DBA; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D014780:Viruses / Q000187:drug effects*
chemical_list: D000970:Antineoplastic Agents; D000998:Antiviral Agents; D002793:Cholic Acids; D002934:Cinnamates; C007036:cholanic acid