Synthesis and anti-inflammatory activity of natural and semisynthetic geranyloxycoumarins
摘要:
Nine new 7-geranyloxycoumarin derivatives differently substituted at position 8 were semi-synthesised. Their topical anti-inflammatory activity was evaluated using the Croton oil ear test in mice as a model of acute inflammation. Auraptene (7-geranytoxycoumarin), its 8-methoxy (collinin, 1) and 8-acetoxy derivatives (5) (1 mumol/cm(1)) provoked 50% oedema reduction, similarly to 0.25 mumol/cm(2) of the reference drug indomethacin, a nonsteroidal anti-inflammatory drug. (C) 2004 Elsevier Ltd. All rights reserved.
Coumarin was detected as one of the most abundant compounds by nontargetedanalysis of natural product components in actual water samples prior to disinfection. More importantly, prechlorination of humic acid generated 3-hydroxycoumarin and monohydroxy-monomethyl-substituted coumarin with a total yield of ≤10.1%, which suggested the humic substance in raw water is an important source of coumarins.
Chakravarti; Ghosh, Journal of the Indian Chemical Society, 1935, vol. 12, p. 793
作者:Chakravarti、Ghosh
DOI:——
日期:——
Concise and Scalable Synthesis of Xanthylentin
作者:Jae Hong Seo、Shyam Kumar Mallik、Sushant Aryal、Siyuan Li、Soon-Ai Kim、Hak Sung Kim
DOI:10.1002/bkcs.10417
日期:2015.8
RadH: A Versatile Halogenase for Integration into Synthetic Pathways
作者:Binuraj R. K. Menon、Eileen Brandenburger、Humera H. Sharif、Ulrike Klemstein、Sarah A. Shepherd、Michael F. Greaney、Jason Micklefield
DOI:10.1002/anie.201706342
日期:2017.9.18
Flavin-dependenthalogenases are useful enzymes for providing halogenated molecules with improved biological activity, or intermediates for synthetic derivatization. We demonstrate how the fungalhalogenase RadH can be used to regioselectively halogenate a range of bioactive aromatic scaffolds. Site-directed mutagenesis of RadH was used to identify catalytic residues and provide insight into the mechanism
Synthesis and anti-inflammatory activity of natural and semisynthetic geranyloxycoumarins
作者:Massimo Curini、Francesco Epifano、Federica Maltese、Maria C Marcotullio、Aurelia Tubaro、Gianmario Altinier、Sylvia Prieto Gonzales、Juan C Rodriguez
DOI:10.1016/j.bmcl.2004.02.009
日期:2004.5
Nine new 7-geranyloxycoumarin derivatives differently substituted at position 8 were semi-synthesised. Their topical anti-inflammatory activity was evaluated using the Croton oil ear test in mice as a model of acute inflammation. Auraptene (7-geranytoxycoumarin), its 8-methoxy (collinin, 1) and 8-acetoxy derivatives (5) (1 mumol/cm(1)) provoked 50% oedema reduction, similarly to 0.25 mumol/cm(2) of the reference drug indomethacin, a nonsteroidal anti-inflammatory drug. (C) 2004 Elsevier Ltd. All rights reserved.