نتایج جستجو برای: 1 hydroxy 9 anthrone
تعداد نتایج: 3004764 فیلتر نتایج به سال:
The MeOH extracts of the ground part and the root of Boenninghausenia japonica NAKAI showed inhibitory activity against tumor cell growth. Fractionation of the extracts has resulted in isolation of 1,3-dihydroxy-4-(2'-hydroxy-3'-hydroxymethyl-3',4'-epoxy-butyl)-N-methylacridone, 1,3-dihydroxy-4-[(Z)-3'-hydroxy-3'-methyl-buten-1'-yl]-N-methylacridone, 3-(1',1'-dimethylallyl)-7-hydroxy-8-methoxy-...
The reaction of 2-hydroxy-3-methoxybenzaldehyde with 4-nitrosulfonylhydrazide under refluxing led to co-crystalline compound contains N'-(2-hydroxy-3-methoxy benzylidene)-4-nitro benzenesulfonylhydrazide (a sulfonamide-Schiff base compound) and 1,2-bis (2-hydroxy-3-methoxy-benzylidenehydrazine) (I). A medium strong hydrogen bonds in 1 links the oxygen atoms of one molecule of 1,2-bis(2-hydroxy-...
The reaction of 2-hydroxy-3-methoxybenzaldehyde with 4-nitrosulfonylhydrazide under refluxing led to co-crystalline compound contains N'-(2-hydroxy-3-methoxy benzylidene)-4-nitro benzenesulfonylhydrazide (a sulfonamide-Schiff base compound) and 1,2-bis (2-hydroxy-3-methoxy-benzylidenehydrazine) (I). A medium strong hydrogen bonds in 1 links the oxygen atoms of one molecule of 1,2-bis(2-hydroxy-...
From the roots of the African plant Bulbine frutescens (Asphodelaceae), two unprecedented novel dimeric phenylanthraquinones, named joziknipholones A and B, possessing axial and centrochirality, were isolated, together with six known compounds. Structural elucidation of the new metabolites was achieved by spectroscopic and chiroptical methods, by reductive cleavage of the central bond between t...
abstract part one: the electrode oxidation potentials of a series of eighteen n-hydroxy compounds in aqueous solution were calculated based on a proper thermodynamic cycle. the dft method at the level of b3lyp-6-31g(d,p) was used to calculate the gas-phase free energy differences ,and the polarizable continuum model (pcm) was applied to describe the solvent and its interaction with n-hydroxy ...
Three quinolinone alkaloids, two acridone alkaloids and a flavones glycoside were isolated from the aerial parts of Glycosmis mauritiana. These compounds were characterized as 7, 8-Dimethoxy-2,2,6-trimethyl-pyrano quinolin-5-one, 4-Methoxy 1-methyl quinolin-2-one, 6-Hydroxy N-methyl 2,3-furo-quinolin-4-one, 1-Hydroxy-10-methyl acridone, 1Hydroxy-2, 3-dimethoxy-10-methylacridin-9-one and Luteoli...
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