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Planta Med 2003; 69(4): 382-384
DOI: 10.1055/s-2003-38885
Letter
© Georg Thieme Verlag Stuttgart · New York

First Isolation of a Symmetrical Glycosylated Methylene Bisflavonoid

Daniela B. De Oliveira1 , Ana Paula de Almeida1 , Gabriela L. De B. A. Simões1 , Catherine Auvin2 , Carlos R. Kaiser3 , Sônia S. Costa1
  • 1Núcleo de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
  • 2Muséum National d'Histoire Naturelle, Paris, France
  • 3Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Publikationsverlauf

Received: July 28, 2002

Accepted: January 4, 2003

Publikationsdatum:
23. April 2003 (online)

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Abstract

Blutaparon portulacoides (St. Hil.) Mears (= Philoxerus portulacoides St. Hil.) (Amaranthaceae) is a species occurring in the Brazilian coast in two botanical varieties. The chemical study of an ethanolic extract led to the isolation of spinacetin 3-O-robinobioside as well as an unique glycosylated pseudo-dimeric flavonoid identified as 8,8″″-methylene bis(spinacetin 3-O-robinobioside) mainly by NMR analyses (1H, 1H-1H COSY, 13C, HMQC, HMBC) and MALDI-TOF mass spectrometry.

References

  • 1 Siqueira J C. A família Amaranthaceae nas restingas do Brasil.  Acta Biologica Leopoldensia. 1987;  9 5-22
    PubMedGoogle Scholar
  • 2 Ulubelen A, Timermann N B, Mabry T J. Flavonoids from Brickellia chlorolepis and B. dentata .  Phytochemistry. 1980;  19 905-8
    CrossrefPubMedGoogle Scholar
  • 3 Iinuma M, Kakuto Y, Tanida N, Tanaka T, Lang F A. Unusual biflavonoids in the farinose exudate of Pentagramma triangularis .  Phytochemistry. 1997;  44 705-10
    CrossrefPubMedGoogle Scholar
  • 4 Roitman N J, Wong R Y, Wollenweber E. Methylene bisflavonoids from frond exudate of Pentagramma triangularis ssp triangularis .  Phytochemistry. 1993;  34 297-301
    CrossrefPubMedGoogle Scholar
  • 5 Parsons I C, Gray A I, Waterman P G. New triterpenes and flavonoids from the leaves of Bosistoa brassii .  J Nat Prod. 1993;  56 46-53
    PubMedGoogle Scholar
  • 6 Iinuma M, Tanaka T, Suzuki K, Lang F A. Two biflavonoids in the farisone exudate of Pentagramma triangularis .  Phytochemistry. 1994;  35 1043-7
    CrossrefPubMedGoogle Scholar

Sônia Soares Costa

Núcleo de Pesquisas de Produtos Naturais

CCS, Bloco H, UFRJ

21 941-590 Rio de Janeiro

Brazil

Fax: +55-21-2270-2683

eMail: sscosta@nppn.ufrj.br