BIS(ARYLMETHYLIDENE)ACETONE COMPOUND, ANTI-CANCER AGENT, CARCINOGENESIS-PREVENTIVE AGENT, INHIBITOR OF EXPRESSION OF Ki-Ras, ErbB2, c-Myc AND CYCLINE D1, BETA-CATENIN-DEGRADING AGENT, AND p53 EXPRESSION ENHANCER
申请人:Shibata Hiroyuki
公开号:US20100152493A1
公开(公告)日:2010-06-17
It has been demanded to improve the poor solubility of curcumin to develop an anti-tumor compound capable of inhibiting the growth of various cancer cells at a low concentration. Thus, disclosed is a novel synthetic compound, a bis(arylmethylidene)acetone, which has both of an excellent anti-tumor activity and a chemo-preventive activity. A bis(arylmethylidene)acetone (i.e., a derivative having a curcumin skeleton) which is an anti-tumor compound and has a chemo-preventive activity is synthesized and screened. A derivative having enhanced anti-tumor activity and chemo-preventive activity can be synthesized.
Efficient carbon-supported heterogeneous molybdenum-dioxo catalyst for chemoselective reductive carbonyl coupling
作者:Shengsi Liu、Jiaqi Li、Titel Jurca、Peter C. Stair、Tracy L. Lohr、Tobin J. Marks
DOI:10.1039/c7cy00336f
日期:——
Reductivecoupling of various carbonyl compounds to the corresponding symmetric ethers with dimethylphenylsilane is reported using a carbon-supported dioxo-molybdenum catalyst. The catalyst is air- and mositure-stable and can be easily separated from the reaction mixture for recycling. In addition, the catalyst is chemoselective, thus enabling the synthesis of functionallized ethers without requiring
Bismuth Trichloride Catalyzed Efficient Reductive Etherification of Carbonyl Compounds with Alcohols: A Novel Method for Preparation of Symmetrical and Unsymmetrical Ethers
The reductive homocoupling of a carbonylcompound and heterocoupling of a carbonylcompound with a non-protected alcohol were both effected smoothly at room temperature with triethylsilane in the presence of a catalytic amount of bismuth trichloride to afford the corresponding ethers in good yields.
Selective hydrogenation of arenes to cyclohexanes in water catalyzed by chitin-supported ruthenium nanoparticles
作者:Yuna Morioka、Aki Matsuoka、Kellie Binder、Benjamin R. Knappett、Andrew E. H. Wheatley、Hiroshi Naka
DOI:10.1039/c6cy00899b
日期:——
The selective hydrogenation of aromatic compounds to cyclohexanes was found to be promoted by chitin-supported rutheniumnanoparticles (Ru/chitin) under near-neutral, aqueous conditions without the loss of C–O/C–N linkages at benzylic positions.
Triflic Acid Catalyzed Reductive Coupling Reactions of Carbonyl Compounds with O-, S-, and N-Nucleophiles
作者:Beate A. Gellert、Nils Kahlcke、Markus Feurer、Stefanie Roth
DOI:10.1002/chem.201101819
日期:2011.10.17
Highly efficient metal‐free reductivecoupling reactions of aldehydes and ketones with a range of nucleophiles in the presence of triflic acid (1–5 mol %) as the catalyst are presented. The reactions can be performed at ambient temperature without exclusion of moisture or air. A range of symmetrical and unsymmetrical ethers were obtained by this method in high yields and short reaction times. For the