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Total Synthesis of Isotopologues of Xanthohumol and its Congeners for Biological Studies

Creator:: Plagmann, Layhna S.
Abstract:: Xanthohumol [XN, (E)-6´-methoxy-3´-(3-methylbuten-2-yl)-2´,4´,4´´-trihydroxychalcone], the principal prenylated chalcone from hops, and its 2,3-dihydro- (DXN) and O6-desmethyl-2,3-dihydro- (DDXN) congeners, are of potential utility for the amelioration of metabolic syndrome; however, their complex bioactivity profiles cannot be properly studied and understood without access to appropriately produced synthetic materials. In the first part of...
Resource Type:: Masters Thesis
Full Text:: described in Chapter 2 was conducted with the assistance of Duncan C. Ellinwood. TABLE OF

Composition of the volatile oil from the foliage and terminal branches of Sierra juniper, Juniperus occidentalis, Hooker

Creator:: Fahey, Michael Duncan
Resource Type:: Masters Thesis
Full Text:: THE FOLIAGE AND TERMINAL 13RANCHE OF $IERA JUNIPER, JUNIPERUS 0CC IDENTALI$, HOOKER LJCHAEL DUNCAN

The synthesis of 2-C¹⁴ labeled DDT

Creator:: Buhler, Donald Raymond
Resource Type:: Masters Thesis
Full Text:: The synthesis of 2-C¹⁴ labeled DDT THE SYNTHESIS OF 2

Carbene chemistry : I. Stereochemical integrity at Cα in ketone tosylhydrazones : II. Hydrogen migration in 2-carbena-6, 6-dimethylnorbornane

Creator:: Balyeat, John Robert
Abstract:: The tosylhydrazones of exo-3-deuteriocamphor and 2- deuterio-2,4-dimethy1-3-pentanone were treated with Nbromosuccinimide (NBS) and pyruvic acid to regenerate the parent ketones. The ketones from the pyruvic acid cleavage show a significant loss of deuterium. The ketones from the NBS cleavage show no loss of deuterium, indicating that stereochemical integrity at. C[subscript...
Resource Type:: Masters Thesis
Full Text:: C: PROGRAMS FOR THE HEWLETT-PACKARD 55 CALCULATOR TO HANDLE THE COMPUTATION OF %D

Development of automated flow injection apparatus and a novel flow cell for chemi- and bioluminescence determinations

Creator:: Gander, Stuart C.
Abstract:: A practical and versatile instrument has been developed both to optimize the chemistry of bio- and chemiluminescence reactions and to measure ultra-trace quantities of associated analytes. The instrument consists of a pneumatic flow injection system linked to a detection cell and a signal processing and readout system. The disk-like cell...
Resource Type:: Masters Thesis
Full Text:: novel flow cell for chemi- and bioluminescence determinations AN ABSTRACT OF THE THESIS OF Stuart C

Part I : development and application of an arsenic speciation technique using ion-exchange solid phase extraction coupled with GFAAS ; Part II : investigation of zinc amalgam as a reductant

Creator:: Bos, Mark C.
Abstract:: Two related techniques, based upon ion-exchange solid phase extraction, have been developed for the determination of arsenic speciation. The inorganic arsenic species arsenite (As(III)) and arsenate (As(V)) are separated by anion-exchange and detected with graphite furnace atomic absorption spectrophotometry (GFAAS) with a nickel matrix modifier. The first separation technique, which...
Resource Type:: Masters Thesis
Full Text:: amalgam as a reductant AN ABSTRACT OF THE THESIS OF Mark C. Bos for the degree of Master of Science in

Metabolism of L-α-arginine in the biosynthesis of blasticidin S

Creator:: Woo, Nam-tae
Abstract:: Two labelled arginines, DL-[2,3,3,-²H₃]arginine, 8, and DL-[ ¹³C, 2-¹⁵N]arginine, 9, were synthesized. These were fed to cultures of Streptomyces griseochromogenes in order to probe the mechanism of the apparent arginine-2,3- aminomutase reaction occurring in biosynthesis of blasticidin S, 1. In previous studies of the enzymes lysine-2,3- aminomutase and tyrosine-2,3-aminomutase different...
Resource Type:: Masters Thesis
Full Text:: analyzed by high field NMR spectroscopy. We have found that an intramolecular migration of nitrogen from C

The photochemistry of polychlorobenzenes in micellar media

Creator:: Lee, Youn-Sik
Abstract:: Photolysis of pentachlorobenzene was carried out in the absence of an electron donor species at 254 nm in cetyltrimethylammonium bromide surfactant solution. The results are consistent with the excited triplet undergoing homolytic cleavage of a C-Cl bond in competition with formation of the excimer, in which the radical anion undergoes...
Resource Type:: Masters Thesis
Full Text:: solution. The results are consistent with the excited triplet undergoing homolytic cleavage of a C-Cl bond

Analysis of the mechanism of sulfoxide-lithium exchange and the reactive intermediate in stereospecific reagent-controlled homologation (StReCH)

Creator:: Hoyt, Amanda
Abstract:: The stereospecific reagent-controlled homologation (StReCH) of boronic esters with enantioenriched carbenoid species generated in situ by the addition of organolithium initiators to stereodefined α-chloroalkyl aryl sulfoxides was previously reported. The reaction of an organolithium with an α-chloroalkyl aryl sulfoxide ostensibly generates an α-chloroalkyllithium via sulfoxide-lithium exchange; however, the true nature...
Resource Type:: Masters Thesis
Full Text:: (±)-(4R*,5R*)-4,5-diphenyl-1,3,2-dioxaborolanes [RB[O(CHPh)2O], R = CH2CH2Bn, c-C6H11, and Ph) with

The biosynthesis of terpenes in Pelargonium graveolens

Creator:: Allison, Robert David
Abstract:: Pelargonium graveolens Ait., rose geranium, contains several oxygenated monoterpenes, most of which are related to each other structurally. In this work, the metabolism and interconversions of these terpenes was investigated. A chromatographic analysis of geranium oil was performed initially for the purposes of identifying the terpenes and determining which chromatographic...
Resource Type:: Masters Thesis
Full Text:: CITRONELLOL CI TRAL MENT HONE MENTHOL E.T ERPINEOL LINALOOL "c- PHELLANDRENE ,c- PINENE FIGURE I SOME

ScholarsArchive@OSU

Total Synthesis of Isotopologues of Xanthohumol and its Congeners for Biological Studies

Composition of the volatile oil from the foliage and terminal branches of Sierra juniper, Juniperus occidentalis, Hooker

The synthesis of 2-C¹⁴ labeled DDT

Carbene chemistry : I. Stereochemical integrity at Cα in ketone tosylhydrazones : II. Hydrogen migration in 2-carbena-6, 6-dimethylnorbornane

Development of automated flow injection apparatus and a novel flow cell for chemi- and bioluminescence determinations

Part I : development and application of an arsenic speciation technique using ion-exchange solid phase extraction coupled with GFAAS ; Part II : investigation of zinc amalgam as a reductant

Metabolism of L-α-arginine in the biosynthesis of blasticidin S

The photochemistry of polychlorobenzenes in micellar media

Analysis of the mechanism of sulfoxide-lithium exchange and the reactive intermediate in stereospecific reagent-controlled homologation (StReCH)

The biosynthesis of terpenes in Pelargonium graveolens

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