2000•Journal of Natural ProductsRequires access

Thonningianins A and B, New Antioxidants from the African Medicinal Herb Thonningia sanguinea

Ikuko I. Ohtani, Naomi Gotoh, Junichi Tanaka, Tatsuo Higa, Maxwell A. Gyamfi, Yoko Aniya

Abstract

Two new ellagitannins, thonningianins A (1) and B (2), have been isolated from the African medicinal herb Thonningia sanguinea and their structures elucidated by interpretation of spectroscopic data. Both 1 and 2 showed strong free radical scavenging activity against 1,1-diphenyl-2-picrylhydrazyl (DPPH) as shown by ESR analysis.

About this research paper

What this paper is about

Why it matters

OpenAlex reports 52 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Herb, DPPH, Traditional medicine, Stereochemistry, Medicinal herbs, Scavenging, Pharmacognosy, Chemistry