Gram-scale synthesis of anti-pancreatic flavonoids (±)-8-[1-(4′-hydroxy-3′-methoxyphenyl)prop-2-en-1-yl]-chrysin and -galangin
摘要:
Gram-scale total synthesis of (+/-)-8-[1-(4'-hydroxy-3'-methoxyphenyl)prop-2-en-1-yl]-galangin (1) and -chrysin (2) has been accomplished in eight steps from commercially available phloroglucinol and three steps from commercially available chrysin, respectively, featuring an efficient introduction of C(8) (1-prop-2-en-1-yl)phenyl moiety in the natural products through chemo- and regioselective cinnamylation and regioselective aromatic Claisen rearrangement. (C) 2014 Elsevier Ltd. All rights reserved.
The antitumoractivity of natural flavonoids has been exhaustively reported. Previously it has been demonstrated that prenylation of flavonoids allows the discovery of new compounds with improved antitumoractivity through the activation of caspase-7 activity. The synthesis of twenty-five flavonoids (4–28) with one or more alkyl side chains was carried out. The synthetic approach was based on the reaction
A new series of chrysin derivatives as potent non-saccharide ⍺-glucosidase inhibitors
作者:Rita Hairani、Warinthorn Chavasiri
DOI:10.1016/j.fitote.2022.105301
日期:2022.11
Twenty-three chrysin derivatives were designed and synthesized by alkylation and bromination reactions. Their structures were confirmed by NMR and mass spectrometry, and their in vitro ⍺-glucosidase (AG) inhibitory activity was investigated. Chrysin derivatives except for 3a, 3b, 2q, and 2r, revealed better activity than the reference acarbose with moderate to very strong inhibition against AG. Notably
通过烷基化和溴化反应设计合成了 23 种白杨素衍生物。通过核磁共振和质谱确定了它们的结构,并研究了它们的体外⍺-葡萄糖苷酶 (AG) 抑制活性。除3a、3b、2q和2r之外的白杨素衍生物显示出比参考阿卡波糖更好的活性,具有中度到非常强的 AG 抑制作用。值得注意的是,2f、2j和4对 AG ⍺-葡萄糖苷酶抑制活性表现出非常强的作用,IC 50值分别为 0.08、3.47 和 2.97 μM。同时,酶动力学研究表明2f为竞争型抑制剂,2j和4为混合型抑制剂。
Briggs, Malcolm T.; Duncan, Graham L. S.; Thornber, Craig W., Journal of Chemical Research, Miniprint, 1982, # 9, p. 2461 - 2487
作者:Briggs, Malcolm T.、Duncan, Graham L. S.、Thornber, Craig W.
DOI:——
日期:——
PATHAK, V. P.;GARG, G. P.;KHANNA, R. N., ACTA CHIM. ACAD. SCI. HUNG., 1982, 110, N 2, 123-126
作者:PATHAK, V. P.、GARG, G. P.、KHANNA, R. N.
DOI:——
日期:——
Evaluation and molecular docking study of two flavonoids from Oroxylum indicum (L.) Kurz and their semi-synthetic derivatives as histone deacetylase inhibitors