Literature DB >> 2458657

Synthesis of two allergenic constituents of propolis and poplar bud excretion.

T Hashimoto1, M Tori, Y Asakawa, E Wollenweber.   

Abstract

The prenyl ester and the phenylethyl ester of caffeic acid, formed in the bud excretion of poplar species, were shown recently to be the major contact allergens in bee-glue. An unambiguous synthesis of these compounds, based on the reaction of caffeic acid with 1-bromo-3-methyl-2-butene and with beta-bromoethylbenzene, respectively, is reported. The synthetic products confirm the previously described structures of the natural products and allow further testing of their allergenic properties.

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Year:  1988        PMID： 2458657     DOI： 10.1515/znc-1988-5-625

Source DB:  PubMed          Journal:  Z Naturforsch C J Biosci        ISSN： 0341-0382


  3 in total

1.  In vitro antitrypanosomal activity of some phenolic compounds from propolis and lactones from Fijian Kawa (Piper methysticum).

Authors:  Kazuhiko Otoguro; Masato Iwatsuki; Aki Ishiyama; Miyuki Namatame; Aki Nishihara-Tsukashima; Hiroaki Kiyohara; Toshihiro Hashimoto; Yoshinori Asakawa; Satoshi Omura; Haruki Yamada
Journal:  J Nat Med       Date:  2011-11-25       Impact factor: 2.343

Review 2.  The immunomodulatory and anticancer properties of propolis.

Authors:  Godfrey Chi-Fung Chan; Ka-Wai Cheung; Daniel Man-Yuen Sze
Journal:  Clin Rev Allergy Immunol       Date:  2013-06       Impact factor: 8.667

3.  Plant-derived phenolic compounds prevent the DNA single-strand breakage and cytotoxicity induced by tert-butylhydroperoxide via an iron-chelating mechanism.

Authors:  Piero Sestili; Giuseppe Diamantini; Annalida Bedini; Liana Cerioni; Ilaria Tommasini; Giorgio Tarzia; Orazio Cantoni
Journal:  Biochem J       Date:  2002-05-15       Impact factor: 3.857
  3 in total

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