La physaline B (C28H32O9), principale physaline active de Physalis angulata L, a ???t??? isol???e ??? partir de la plante enti???re de Physalis angulata L et caract???ris???e par une analyse de diffraction des rayons X. Elle cristallise dans le syst???me monoclinique, groupe spatial P2(1) avec C28H32O9, a = 12.4996(2), b = 14.35620(10), c = 14.75190(10)???, V = 2607.97(5)???3, Z = 4, Dc = 1.382mg/cm3, Mr = 542.56, F(000) = 1152, et = 0.870 mm-1. Le R final = 0,0389 et wR = 0,1037 pour 47670 r???flexions observ???es (I > 2 ...
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La physaline B (C28H32O9), principale physaline active de Physalis angulata L, a ???t??? isol???e ??? partir de la plante enti???re de Physalis angulata L et caract???ris???e par une analyse de diffraction des rayons X. Elle cristallise dans le syst???me monoclinique, groupe spatial P2(1) avec C28H32O9, a = 12.4996(2), b = 14.35620(10), c = 14.75190(10)???, V = 2607.97(5)???3, Z = 4, Dc = 1.382mg/cm3, Mr = 542.56, F(000) = 1152, et = 0.870 mm-1. Le R final = 0,0389 et wR = 0,1037 pour 47670 r???flexions observ???es (I > 2 (I)). La mol???cule rigide est constitu???e de huit anneaux fusionn???s impliquant deux lactones. Il y a deux mol???cules C28H32O9 dans une unit??? sym???trique, et le compos??? titre est empil??? dans une structure de couche 3D gr???ce ??? des liaisons hydrog???ne.Dans la plage de 5-20 mol/L, la physaline B peut inhiber de mani???re significative la s???cr???tion des cytokines inflammatoires TNF- et IL-6 sur les cellules RAW264.7. Les r???sultats sugg???rent que la physaline B a une activit??? anti-inflammatoire in vitro.
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