We report a remote arylation in less than 10 min reaction time at room temperature over a distance of up to 11 carbons. The unprecedentedspeed is enabled by the air-stable PdI dimer [Pd(μ-I)(PCy2tBu)]2.
Potential antiatherosclerotic agents. 2. (Aralkylamino)- and (alkylamino)benzoic acid analogs of cetaben
作者:J. Donald Albright、Vern G. DeVries、Elwood E. Largis、Thomas G. Miner、Marvin F. Reich、Sheldon A. Schaffer、Robert G. Shepherd、Janis Upeslacis
DOI:10.1021/jm00364a009
日期:1983.10
the corresponding esters and sodium salts, are described. The compounds were evaluated in vivo in rats for serum sterol and triglyceride lowering activity and in vitro for activity in inhibiting the principle cholesterol-esterifying enzyme of the arterial wall, fatty acyl-CoA:cholesterol acyltransferase (ACAT). Based on a combination of these two activities, cataben sodium (150) was selected for development
A new preparation of 3,5,5-trialkyl-gamma-butyrolactones of defined absolute configuration is reported. This method involves the diastereoselective alkylation of 3,4-ethylenic acids after incorporation of a chiral Evans auxiliary, and then after separation of the two diastereomers and hydrolysis of the auxiliary, stereospecific halo lactonizations. This method was applied to the preparation of a natural product, present in a sponge. (c) 2007 Elsevier Ltd. All rights reserved.
Synthesis of N-ω-Phenylalkyl-4-(p-chlorophenyl)-piperidin-4-ol Analogues with Potent Antiproliferative Activity Against HCT-116 Cells
Some opioid analogues, such as morphine and loperamide, were reported to exhibit weak antiproliferative activity against tumor cells. In a study of loperamide analogues, we found that adding an N-omega-phenylalkyl group onto the 4-arylpiperidin-4-ol unit can have important effects on the antiproliferative activity of such compounds against HCT-116 cells. We optimized the distance between the phenyl group and 4-arylpiperidin unit to promote such activity.