Further studies on the structure of polysaccharides from the lichen Flavoparmelia caperata (L.) Hale

Tadahiro Takeda, Noriko Shimizu, Sachiko Watanabe, Yoshikuni Edagawa, Yoshihisa Ito, Takao Narui, Shoji Shibata

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A water-soluble polysaccharide called PC-2 was previously isolated from Flavoparmelia caperata (L.) Hale and assigned to α(1-3)(1-4)glucan. However, PC-2 separated into three components, PC-2A, PC-2B, and PC-2C (a single peak in HPLC, respectively) on further purification. Methylation analysis and 1H- and 13C-NMR spectroscopic studies suggested that PC-2A is composed of repeating units of [α-D-Glc1-3]3, : [α-D-Glc1-4]2, while PC-2B and PC-2C are partly branched galactoglucomannans consisting of (1-3)- and (1-4)-linked α-D- glucopyranosyl units as the main chain. In addition we confirmed that the polysaccharide fraction PB-2 from the lichen of the same genus, Flavoparmelia baltimorensis (Gyelnik & Foriss) Hale, is identical to PC-2 based on the chemical and spectroscopic data.

Original languageEnglish
Pages (from-to)1436-1438
Number of pages3
JournalChemical and Pharmaceutical Bulletin
Volume51
Issue number12
DOIs
Publication statusPublished - 2003 Dec
Externally publishedYes

Fingerprint

Lichens
Polysaccharides
Methylation
Purification
High Pressure Liquid Chromatography
Nuclear magnetic resonance
Water
(1-3)-(1-4)-glucan
Proton Magnetic Resonance Spectroscopy
Carbon-13 Magnetic Resonance Spectroscopy

Keywords

  • α(1-3)(1-4)glucan (3 : 2)
  • Flavoparmelia baltimorensis
  • Flavoparmelia caperata

ASJC Scopus subject areas

  • Drug Discovery
  • Organic Chemistry
  • Chemistry(all)
  • Pharmacology

Cite this

Further studies on the structure of polysaccharides from the lichen Flavoparmelia caperata (L.) Hale. / Takeda, Tadahiro; Shimizu, Noriko; Watanabe, Sachiko; Edagawa, Yoshikuni; Ito, Yoshihisa; Narui, Takao; Shibata, Shoji.

In: Chemical and Pharmaceutical Bulletin, Vol. 51, No. 12, 12.2003, p. 1436-1438.

Research output: Contribution to journalArticle

Takeda, Tadahiro ; Shimizu, Noriko ; Watanabe, Sachiko ; Edagawa, Yoshikuni ; Ito, Yoshihisa ; Narui, Takao ; Shibata, Shoji. / Further studies on the structure of polysaccharides from the lichen Flavoparmelia caperata (L.) Hale. In: Chemical and Pharmaceutical Bulletin. 2003 ; Vol. 51, No. 12. pp. 1436-1438.
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