托宁尼亚因A和B，源自非洲药草血红托宁尼亚的新型抗氧化剂。

Thonningianins A and B, new antioxidants from the African medicinal herb Thonningia sanguinea.

作者信息

Ohtani I I, Gotoh N, Tanaka J, Higa T, Gyamfi M A, Aniya Y

机构信息

Department of Chemistry, Biology, and Marine Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan.

出版信息

J Nat Prod. 2000 May;63(5):676-9. doi: 10.1021/np990396w.

DOI:10.1021/np990396w

PMID:10843586

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.

摘要

从非洲药草血红刺桐（Thonningia sanguinea）中分离出了两种新的鞣花单宁，即桑宁宁A（1）和桑宁宁B（2），并通过光谱数据分析阐明了它们的结构。电子自旋共振（ESR）分析表明，化合物1和2对1,1-二苯基-2-苦基肼（DPPH）均表现出较强的自由基清除活性。