NOVEL BIS(FORMYLPHENYL)ALKANE AND NOVEL POLYNUCLEAR PHENOL DERIVED FROM THE SAME
申请人:Yoshitomo Akira
公开号:US20100016633A1
公开(公告)日:2010-01-21
Manufacture a novel bis(formylphenyl)alkane according to General Formula (1), as well as a novel polynuclear phenol derived therefrom, by causing a bis(hydroxymethyl-hydroxyphenyl)alkane to react with hexamethylene tetramine in the presence of an acid and hydrolyzing the reaction product, and then using the obtained bis(hydroxy-formylphenyl)alkane as a direct material and causing this material to react with halogenated alkoxycarbonyl hydrocarbon in the presence of a base.
Three phenolic model compounds representing bonding patterns of residual kraft lignin were incubated with manganese peroxidase from Lentinula edodes. Extensive degradation of all the phenolic models, mainly occurring via side-chain benzylic oxidation, was observed. Among the tested model compounds the diphenylmethane alpha-5 phenolic model was found to be the most reactive, yielding several products showing oxidation and fragmentation at the bridging position. The non-phenolic 5-5' biphenyl and 5-5' diphenylmethane models were found unreactive. (C) 2000 Elsevier Science Ltd. All rights reserved.
Methane-bis (vanillin) and derivatives and processes for preparing the same
申请人:MERCK &
公开号:US02775613A1
公开(公告)日:1956-12-25
US7875743B2
申请人:——
公开号:US7875743B2
公开(公告)日:2011-01-25
Synthesis and complexation properties of two new curcuminoid molecules bearing a diphenylmethane linkage
and 4 , bearing a diphenylmethane bridge for both compounds and a crownether chain adapted to complex Li + for compound 4 , were synthesized and characterized by mass and NMR spectroscopies. By their preorganized geometry, they represent a new class of curcuminoids able to complextransitionmetal cations. Their absorption spectra in DMF by comparison with those of curcumin 1 and dimethylcurcumin
摘要 双姜黄素类化合物 3 和 4 被合成并通过质谱和核磁共振光谱表征,这两个化合物都带有一个二苯甲烷桥和一个适合化合物 4 络合 Li + 的冠醚链。通过其预先组织的几何形状,它们代表了一类能够络合过渡金属阳离子的新型姜黄素。与姜黄素 1 和二甲基姜黄素 2 的吸收光谱相比,它们在 DMF 中的吸收光谱表明,两半中的酚盐形式在化合物 3 中相互作用,而在化合物 4 中是独立的。络合研究表明类姜黄素对过渡金属的选择性较差。然而,通过紫外可见吸收光谱研究的 Cu (II) 络合显示出姜黄素 1 和双类姜黄素 3 之间的细微差异。