VAHOUNY, GEORGE V. AND C. R. TREADWELL. Absorption oj cholesterol esters in the lymph-fistula rat. Am. J. Physiol. 195(z): 516520. rg#.-Free and esterified cholesterol fractions in thoracic duct lymph of rats were determined after the administration of emulsions containing saline, albumin, taurocholate, oleic acid and free cholesterol, or fatty acid esters of cholesterol. Total lymph cholestero...

Acetoxy esters of purine W-oxides inactivate and induce mutations in Bacillus jwà ̈n/Ã1-transforming DNA. The es ters were the chemical models available for the sulfate es ters believed to be formed in vivo. When metabolic suscep tibilities were taken into consideration, there is a reasonable correlation between the mutagenicity of various acetoxy es ters and the oncogenicity of the parent W-oxi...

A novel photoredox-catalyzed C(sp 3 )–C(sp ) cross-coupling between N -arylamines and cycloketone oxime esters under mild conditions has been accomplished.

The purpose of this work is to study the esterification liquid olefins with acetic acid in presence catalysts and structure properties synthesized saturated esters. 1-Hexene, 2-methyl-1-pentene, 2-ethyl-1-pentene, 3-methyl-1-pentene, 3-methyl-2-pentene were used as for reaction: H2SO4 HCl. influence various factors (the nature catalysts, relative activity temperature a) on rate reaction was stu...

Reactions of 2-amino-aryl alcohols with beta-ketoesters catalyzed by a catalytic amount of FeCl3 via tandem benzylation-cyclization produce the corresponding 3-quinolinecarboxylic esters in good to high yields. Extending this methodology to propargylation-cyclization, 2-nitrophenyl propargyl alcohols with beta-ketoesters catalyzed by FeCl3 and SnCl2 also produce the 4-alkyne-3-quinolinecarboxyl...

Two-component reaction of 2-aminobenzophenones with acetylenic esters in the presence of γ-Al2O3 and Cu/ZnO as suitable heterogeneous catalysts has been studied. Nano γ-Al2O3 and Cu/ZnO showed high activities when used as surface catalysts for the synthesis of quinoline derivatives. After completion of the reaction, the catalyst was ...

Synthesis and biological activity of a series of 7^[(Z)-2-(2-aminothiazol-4-yl)-3-(substituted)2-propenoylamino]-3-cephem-4-carboxylic acids and their pivaloyloxymethyl esters are described. These acid compounds exhibited potent antibacterial activity against both Gram-positive and Gram-negative bacteria. Pivaloyloxymethyl esters of selected compounds in this series were found to be well absorb...

A dynamic kinetic resolution of β-halo α-keto esters in an asymmetric homoenolate reaction is described. A chiral N-hetereocyclic carbene catalyzes the a(3) → d(3)-umpolung addition of α,β-enals to racemic α-keto esters, forming γ-butyrolactones with three contiguous stereocenters. The addition occurs with high regio-, diastereo-, and enantiocontrol. This methodology constitutes an intermolecul...