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Two New Phenolic Constituents from the Stems of Euphorbia griffithii.
Natural Products and Bioprospecting ( IF 4.8 ) Pub Date : 2019-11-16 , DOI: 10.1007/s13659-019-00223-2 Joseph Sakah Kaunda 1, 2 , Ying-Jun Zhang 1, 3
中文翻译:
大戟茎中的两种新酚类成分。
更新日期:2019-11-16
Natural Products and Bioprospecting ( IF 4.8 ) Pub Date : 2019-11-16 , DOI: 10.1007/s13659-019-00223-2 Joseph Sakah Kaunda 1, 2 , Ying-Jun Zhang 1, 3
Affiliation
Abstract
Phytochemical studies on MeOH extract of stems of Euphorbia griffithii led to the isolation of one new hydrolyzable tannin dimer, corilagiffithiin (1) and one new galloyl-glucoside (2), alongside six known ones (3–8). Their structures and absolute configurations were determined by in depth spectroscopic analyses and comparison of their 1D NMR and MS data with literature reported values. Configurations of sugar moieties were determined by acidic hydrolysis and subsequent GC analysis of their corresponding trimethylsilylated l-cysteine adduct. At a concentration of 50 μM, compounds 1–3 showed no anti-inflammatory activities.Graphic Abstract
中文翻译:
大戟茎中的两种新酚类成分。