Studies on the constituents of Leonotis nepetaefolia

Tadahiro Takeda, Yuuji Narukawa, Noriyasu Hada

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Three antioxidative phenylethanoid glycosides and two new iridoid glycosides, along with three known iridoids were isolated from the African medicinal plant, Leonotis nepetaefolia R. BR. (Labiatae). The new iridoid glycosides were established as 10-O-(trans-3,4-dimethoxycinnamoyl)geniposidic acid and 10-O-(p-hydroxybenzoyl)geniposidic acid. Antioxidative activities of the compounds were measured by α,α-diphenyl-β-picrylhydrazyl (DPPH) method, and the three known phenylethanoid glycosides, acteoside, martynoside and lavandulifolioside showed strong antioxidative activity.

Original languageEnglish
Pages (from-to)284-286
Number of pages3
JournalChemical and Pharmaceutical Bulletin
Volume47
Issue number2
Publication statusPublished - 1999 Feb

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Iridoid Glycosides
Lamiaceae
Glycosides
Iridoids
Medicinal Plants
geniposidic acid

Keywords

  • Acylated geniposidic acid
  • Antioxidative activity
  • Labiatae
  • Leonotis nepetaefolia
  • Phenylethanoid glycoside

ASJC Scopus subject areas

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

Cite this

Studies on the constituents of Leonotis nepetaefolia. / Takeda, Tadahiro; Narukawa, Yuuji; Hada, Noriyasu.

In: Chemical and Pharmaceutical Bulletin, Vol. 47, No. 2, 02.1999, p. 284-286.

Research output: Contribution to journalArticle

Takeda, Tadahiro ; Narukawa, Yuuji ; Hada, Noriyasu. / Studies on the constituents of Leonotis nepetaefolia. In: Chemical and Pharmaceutical Bulletin. 1999 ; Vol. 47, No. 2. pp. 284-286.
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