61813-58-9Relevant academic research and scientific papers
Highly chemoselective hydrogenation of active benzaldehydes to benzyl alcohols catalyzed by bimetallic nanoparticles
Liu, Chulong,Bao, Hailin,Wang, Dingsheng,Wang, Xinyan,Li, Yadong,Hu, Yuefei
, p. 6460 - 6462 (2015/11/16)
By using novel Pd/Ni bimetallic nanoparticles as a catalyst, the active benzaldehydes were hydrogenated to the corresponding benzyl alcohols as unique products in practical quantitative yields. The undesired catalytic hydrogenolysis of the benzyl alcohol was inhibited completely. By using this hydrogenation as a key step, the total synthesis of the natural product gastrodin was achieved with less total steps and a higher total yield.
Synthesis and biological evaluation of isosteric analogs of mandipropamid for the control of oomycete pathogens
Su, Na,Wang, Zhen-Jun,Wang, Li-Zhong,Zhang, Xiao,Dong, Wei-Li,Wang, Hong-Xue,Li, Zheng-Ming,Zhao, Wei-Guang
scheme or table, p. 101 - 111 (2012/06/01)
A series of isosteric analogs of mandipropamid were designed and synthesized via 'click chemistry'. The amide bond of mandipropamid was substituted by a 1,2,3-triazole functional group. The bioassay results have indicated that some of the title compounds exhibited moderate fungicidal activity against Pseudoperonospora cubensis, and the activity has been systematically studied as a function of molecular structure. The low activity of the mandipropamid analog that contains a lipid chain is likely due to the presence of a weak hydrogen bond donor in the 1,2,3-triazole. Furthermore, we have performed the molecular modeling and found that N-methylamide could be more effective than amide as the surrogates to 1,2,3-triazole, which ultimately leads to a longer distance (1.1A longer) between the two substitutes in the 1,4-disubstituted 1,2,3-triazole compound.
Synthesis and antinociceptive activity of capsinoid derivatives
He,Ye,Mou,Chen,Li
experimental part, p. 3345 - 3349 (2009/12/01)
According to the data of structural identification, six capsinoids or their derivatives were successfully synthesized to test for their analgesic activity. Three of them were capsinoids with different acyl chain compared with capsaicin after substitution
The immobilized porphyrin-mediator system Mn(TMePyP)/clay/HBT (clay-PMS): A lignin peroxidase biomimetic catalyst in the oxidation of lignin and lignin model compounds
Crestini, Claudia,Pastorini, Alessandra,Tagliatesta, Pietro
, p. 4477 - 4483 (2007/10/03)
A biomimetic system for lignin peroxidase (LiP) was designed by using a cationic porphyrin, [Mn(TMePyP)OAc5], supported on the smectitic clay montmorillonite [Mn(TMe-PyP)/clay]. The natural role of the polypeptidic pocket of LiP was mimicked by the clay. The possibility to use low-molecular-weight redox mediators as active readily diffusible oxidizing species has been investigated. This assembly - a sort of "synthetic enzyme" - can be defined as an immobilized porphyrin-mediator system (clay-PMS). The clay-PMS was found to be a stable, recyclable, and efficient catalyst for the environmentally friendly H2O2-catalyzed oxidation of different lignins and representative lignin model compounds. The clay-PMS showed a higher reactivity than Mn(TMePyP)/clay alone due to an effective role of the redox mediator on the oxidation. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004.
ESTER LINKAGES BETWEEN LIGNIN AND GLUCURONIC ACID IN LIGNIN-CARBOHYDRATE COMPLEXES FROM FAGUS CRENATA
Imamura, Takeshi,Watanabe, Takashi,Kuwahara, Masaaki,Koshijima, Tetsuo
, p. 1165 - 1174 (2007/10/02)
Conjugate acid oxidation of benzyl esters with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and trifluoroacetic acid (TFA) was applied to the binding site analysis of ester linkages between lignin and glucuronoxylan in Fagus crenata wood.Based on the conjugate acid DDQ-oxidation of a watersoluble lignin-carbohydrate complex (LCC-WE) from the beech wood, the frequency of the ester bonds between the lignin and glucuronic acid residue of glucuronoxylan was determined to be 1.6 per molecule of LCC-WE. - Key words: Fagus crenata; Fagaceae; lignin-carbohydrate complex (LCC); 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ).
Organotin-containing composition for the stabilization of polymers of vinyl chloride
-
, (2008/06/13)
An organotin-containing composition for the stabilization of polymers or copolymers of vinyl chloride in which there is incorporated a stabilizing amount of an organotin compound containing at least two tin atoms and which is a mercapto, hydroxy or alkoxy substituted ester of a mercapto acid substituted organotin mercapto acid diester.
Degradation Pathway of Arylglycerol-β-aryl Ethers by Phanerochaete chrysosporium
Umezawa, Toshiaki,Nakatsubo, Fumiaki,Higuchi, Takayoshi
, p. 2677 - 2682 (2007/10/02)
The degradation pathway for the most important β-O-4 lignin substructure with a white rot fungus, Phanerochaete chrysosporium, was investigated, and the following conclusions were obtained. a) The allyl alcohol end group attached to the β-O-4 substructure was degraded to a formyl group via a glycerol group. b) Arylglycerol was formed by the cleavage of the β-O-4 substructure without involvement of the hydroxylation reaction at Cβ. c) 18O was not incorporated from 18O2 into arylglycerol nor phenol liberated by the degradation of the β-O-4 substrucrure, but was incorporated into the benzyl alcohol derivative formed by Cα-Cβ cleavage. d( Two alternative degradation pathway of the β-O-4 substructure, a pathway via arylglycerol and direct oxygenative Cα-Cβ cleavage, are proposed
