Isolation and Characterization of Compounds from the Methanolic Bark Extract of Adenanthera pavonina L. Issue 1 (2nd January 2020)

• Record Type: Journal Article
• Authors: Ara, Arzumand; Saleh-E-In, Md. Moshfekus; Ahmad, Mesbahuddin; Hashem, Md. Abul; Hasan, Choudhury Mahmood
• Is Part Of: Analytical chemistry letters. Volume 10:Issue 1(2020)
• Page Start: 49
• Page End: 59
• Publication Date: 2020-01-02
• Subjects: Adenanthera pavonina -- bark -- catechin -- methanolic extract -- triterpenoid saponin; Chemistry, Analytic -- Periodicals; 543.05
• DOI: 10.1080/22297928.2020.1745684
• Languages: English
• ISSNs: 2229-7928

Abstract

Abstract: A known flavonoids 7-methoxycatechin (1) along with two oleanane type triterpenoid saponins 3-[(2'-acetamido-2'-deoxy-β-D-glucopyranosyl)oxy]-olean-12-en-28-oic acid (2), 3-[(2'-acetamido-2'-deoxy-β-D-glucopyranosyl)oxy]-16-α-hydroxyolean-12-en-28-oic acid (3) and a new flavonoid 3-O-β-D-glucopyranosyl-7-O-methyl catechin (4) were isolated from the crude methanolic extract by extensive chromatographic separation. Moreover, a known 3-O-β-D-glucopyranosyl-21- methylcarboxy-olean-12-en-28-oic-acid (5) and a new 3-O-β-D-glucopyranosyl-21-methyl carboxyolean-18-en-28-oic acid (6) oleanane type triterpenoid saponins were further isolated from the butanol fraction along with a known benzoic acid derivative 2-hydroxy-1, 2-diphenyl ethanone (benzoin) (7) was separated from ethyl acetate fraction of methanolic bark extract of Adenanthera pavonina L. The structures of the known and new compounds were elucidated by spectroscopic techniques. GRAPHICAL ABSTRACT: