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Articles 121 - 129 of 129
Full-Text Articles in Physical Sciences and Mathematics
Serotonin 5-Ht4 Agonist Activity Of A Series Of Meso-Azanoradamantane Benzamides, Daniel Becker, Roger Nosal, Clara I. Villamil, Gary Gullikson
Serotonin 5-Ht4 Agonist Activity Of A Series Of Meso-Azanoradamantane Benzamides, Daniel Becker, Roger Nosal, Clara I. Villamil, Gary Gullikson
Chemistry: Faculty Publications and Other Works
A series of meso-amino(methyl)azanoradamantane benzamides has been prepared and evaluated for 5-HT4agonism activity in the rat tunica muscularis mucosae (TMM) assay. Compound 8i is the most potent 5-HT4agonist in the series, with an EC50 of 217 nM.
Synthetic Strategies For The Construction Of Enantiomeric Azanoradamantanes, Daniel Becker, Roger Nosal, Daniel L. Zabrowski, Daniel Flynn
Synthetic Strategies For The Construction Of Enantiomeric Azanoradamantanes, Daniel Becker, Roger Nosal, Daniel L. Zabrowski, Daniel Flynn
Chemistry: Faculty Publications and Other Works
The amino azanoradamantane hexahydro-2,5b-methano-IH-3aS,3aa,6aa-cyclopenta-[clpyrrole-4a-amine 1and the corresponding enantiomer ent-1 have been prepared along with benzamide derivatives SC-52491and SC-52490, respectively, which are of pharmaceutical interest. The key meso-azabicyclo[3.3.0] intermediate 3 was prepared via three separate routes: a [3+2] cycloaddition route, a radical cyclization/ionic cyclization route, and a reductive Pauson-Khand route.
One-Pot Preparation Of 1,3-Dihydro-1- (Trifluoromethyl)Isobenzofuran-1-Ol Derivatives From 1,2-Dibromobenzene, Daniel Becker, Hui Li, Daniel L. Flynn
One-Pot Preparation Of 1,3-Dihydro-1- (Trifluoromethyl)Isobenzofuran-1-Ol Derivatives From 1,2-Dibromobenzene, Daniel Becker, Hui Li, Daniel L. Flynn
Chemistry: Faculty Publications and Other Works
A one-pot method for the preparation of 1,3-dihydro-1-(trifluoromethyl)isobenzofuran-1-ol derivatives 5from 1,2-dibromobenzene is described
Preparation Of Trifluoromethyl Lactol Derivatives Via Base Initiated Cyclobutanol Ring Opening To A Laterally Lithiated Trifluoromethyl Ketone, Daniel Becker, Daniel L. Flynn
Preparation Of Trifluoromethyl Lactol Derivatives Via Base Initiated Cyclobutanol Ring Opening To A Laterally Lithiated Trifluoromethyl Ketone, Daniel Becker, Daniel L. Flynn
Chemistry: Faculty Publications and Other Works
Benzocyclobutenone derivatives 4 are converted to the corresponding trifluoromethylcyclobutanols 5 by treatment with trifluoromethyltrimethylsilane in the presence of tetra-n-butylammonium fluoride. These trifluoromethylcyclobutanol derivatives are then treated with LiTMP in the presence of aromatic aldehydes to afford trifluoromethyllactols 6 via a laterally-lithiated trifluoromethylketone intermediate.
Synthesis Of N-Boc-3-Azabicyclo[3.3.0]Octan-7-One Via Reductive Pauson-Khand Cyclization And Subsequent Conversion To A Novel Diazatricyclic Ring System, Daniel Becker, Daniel L. Flynn
Synthesis Of N-Boc-3-Azabicyclo[3.3.0]Octan-7-One Via Reductive Pauson-Khand Cyclization And Subsequent Conversion To A Novel Diazatricyclic Ring System, Daniel Becker, Daniel L. Flynn
Chemistry: Faculty Publications and Other Works
An intramolecular reductive Pauson-Khand reaction of the hexacarbonyldicobalt complex of N-(tert-butyloxycarbonyl)allylpropargylamine under dry-state adsorption conditions directly afforded the saturated N-BOC-3-azabicyclo[3.3.0]octan-7-one when the reaction was performed under an inert atmosphere. This bicyclic ketone was converted in several steps to the novel octahydro-1-azeto[2′,3′:3,4]cyclopenta[1,2-C]pyrrole ring system as confirmed by single crystal X-ray analysis.
Studies Of The Solid-Phase Pauson-Khand Reaction Selective In-Situ Enone Reduction To 3-Azabicyclo[3.3.0]Oct-Anones, Daniel Becker, Daniel L. Flynn
Studies Of The Solid-Phase Pauson-Khand Reaction Selective In-Situ Enone Reduction To 3-Azabicyclo[3.3.0]Oct-Anones, Daniel Becker, Daniel L. Flynn
Chemistry: Faculty Publications and Other Works
The Smit-Caple DSAC Pauson-Khand cyclization of a series of N-protected allyl propargyl amines in the absence of oxygen gave rise to formation of the saturated azabicyclo[3.3.0]octanones in excellent yields. Standard cyclization in air gave mixtures of saturated and unsaturated ketones.
Isolation Of A Highly Functionalized Troeger’S Base Derivative Via A Novel Reaction, Daniel Becker, Patricia M. Finnegan, Paul W. Collins
Isolation Of A Highly Functionalized Troeger’S Base Derivative Via A Novel Reaction, Daniel Becker, Patricia M. Finnegan, Paul W. Collins
Chemistry: Faculty Publications and Other Works
Heating a solution of methyl 5-chloro-4-[(ethoxyoxoacetyl) amino]-2-methoxybenz-oate, 3 in DMSO gave rise to the formation of the highly substitute
A Proposal For United States/Polish Collaboration On Energy And The Environment, Carole B. Szpunar
A Proposal For United States/Polish Collaboration On Energy And The Environment, Carole B. Szpunar
Chemistry: Faculty Publications and Other Works
Argonne National Laboratory, a U.S. Department of Energy facility that is operated by the University of Chicago and located southwest of Chicago, Illinois, has proposed a collaborative effort by the United States and Poland to conduct applied research on energy and environmental topics of common interest. Through this collaboration, evaluative studies on energy and environmental assessment issues could be developed and implemented by Argonne and one or more sister institutions in Poland, which could lead to active research, development, and demonstration joint activities. The objective of this initiative is to produce strategies and options for review by Poland's decision makers …
Copper And Barium As Dietary Discriminants: The Effects Of Diagenesis, J B. Lambert, S V. Simpson, Carole B. Szpunar, J E. Buikstra
Copper And Barium As Dietary Discriminants: The Effects Of Diagenesis, J B. Lambert, S V. Simpson, Carole B. Szpunar, J E. Buikstra
Chemistry: Faculty Publications and Other Works
In skeletons excavated from Woodland sites, copper and barium levels are found to have been contaminated by influx from the soil environment. Electron microprobe scans for both elements show build-up along the outer surface of femur cross sections. Elemental levels for Cu and Ba are lower in the femur or fibula than in the more porous rib. The distribution of Cu in the immediately surrounding soil is highly anisotropic. These observations indicate that Cu and Ba should not be used for dietary inferences about ancient populations without independent evidence that diagenesis is not important.