Barricyclin D1—a dimeric ellagitannin with a macrocyclic structure—and accompanying tannins from Barringtonia racemosa. Issue 7 (23rd April 2021)

• Record Type: Journal Article
• Authors: Yoshikawa, Shinji; Chen, Lih-Geeng; Yoshimura, Morio; Amakura, Yoshiaki; Hatano, Tsutomu; Taniguchi, Shoko
• Is Part Of: Bioscience, biotechnology, and biochemistry. Volume 85:Issue 7(2021)
• Page Start: 1609
• Page End: 1620
• Publication Date: 2021-04-23
• Subjects: Barringtonia racemosa -- Lecythidaceae -- ellagitannin -- barricyclin D1 -- macrocyclic structure; Biotechnology -- Periodicals; Biochemistry -- Periodicals; 660.6
• DOI: 10.1093/bbb/zbab073
• Languages: English
• ISSNs: 0916-8451

Abstract

ABSTRACT: Our examination of high molecular weight polyphenolic constituents in the leaves of Barringtonia racemosa of the family Lecythidaceae uncovered 5 previously undescribed ellagitannins. One, barringtin M1 (1 ), among them was a hydrolysable tannin monomer, while remaining 4, barringtins D1 (2 ), D2 (3 ), D3 (4 ), and barricyclin D1 (5 ), were all dimers. Barricyclin D1 had a first macrocyclic structure formed from casuarictin (6 ) and tellimagrandin I (7 ), and the other ellagitannins had structures related to 5 . Two additional known phenolics, valoneic acid dilactone (8 ) and schimawalin A (9 ), were also isolated from the leaves. These results suggested that the leaves of B. racemosa are a natural resource rich in hydrolysable tannin oligomers. Graphical Abstract: