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High resolution ionization-detected simulated Raman spectroscopy

Creator:: Crew, Marshall D.
Abstract:: A new experimental apparatus was built at Oregon State University to perform high resolution stimulated Raman spectroscopy in a pulsed molecular jet at state densities of the order of 10¹¹ cm⁻³. The technique uses a stimulated Raman step to first populate a vibrational/rotational level and then a resonantly enhanced multiphoton...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Marshall D. Crew for the degree of

Enantioselective Total Syntheses of Quinolizidine Lycopodium Alkaloid Cermizine D and Cytotoxic Marine Macrolide Mandelalide A

Creator:: Veerasamy, Nagarathanam
Abstract:: The enantioselective total synthesis of quinolizidine-containing natural product cermizine D and formal syntheses of senepodine G and cermizine C has been achieved. These natural products are members of the lycopodium alkaloids, which have attracted significant attention due to their exciting biological activities and the diverse structural scaffolds. Key steps in...
Resource Type:: Dissertation
Full Text:: Lycopodium Alkaloid Cermizine D and Cytotoxic Marine Macrolide Mandelalide A. Abstract approved

Studies of ammonia gas transport and fluorimetric detection in an aqueous solution

Creator:: Clark, Eric J.
Resource Type:: Masters Thesis
Full Text:: suggestions. I must also thank Dr. Ronald Guenther and Mr. Marshall Crew for sharing their expertise on

Examination of low-lying rovibrational states of D₃[subscript h] oblate top molecules using high resolution FTIR and coherent anti-Stokes Raman spectroscopies

Creator:: Kirkpatrick, Robynne
Abstract:: Interesting rovibrational characteristics of two D_(3h) oblate symmetric top molecules were studied. Hamiltonian models for the fine rovibrational level structure of [1.1.1]propellane (propellane) were obtained for many low-lying modes. Ground state parameters (GSP) that are not exclusively K^(2n) dependent were obtained. Initially, the GSP were used in conjunction with density...
Resource Type:: Dissertation
Full Text:: particular mode number. The irreducible dimension of the mode is denoted d, where, for a two dimensional

Studies toward the total synthesis of (+)-providencin

Creator:: Jana, Somnath
Abstract:: Studies toward the total synthesis of (+)-providencin (1), a highly oxygenated cembranoid dipterpene with a unique bicyclo[12.2.0]hexadecane skeleton and pronounced biological activity, are described. These studies resulted in the synthesis of advanced intermediates 320 and 332 which contain all of the carbon atoms of 1. In a first generation approach...
Resource Type:: Dissertation
Full Text:: ) Marshall, J. A.; Robinson, E. D. J. Org. Chem. 1990, 55, 3450. 22 13. Marshall, J. A.; Sehon, C. A

Synthetic studies of nonadrides

Creator:: Drapela, Nicholas Ernest
Abstract:: An asymmetric approach to the synthesis of byssochlamic acid (1) is described. Regioisomeric enzymatic differentiation is described in the selective hydrolysis of dimethyl ester 30 by porcine liver esterase. Chiral dimethyl ester 42 was prepared by desymmetrization of cyclopentene 34 using porcine liver esterase. A key intramolecular [2+2]cycloaddition-cycloreversion photometathesis of...
Resource Type:: Dissertation
Full Text:: 14 1998. Title: Synthetic Studies of Nonadrides Abstract approved: James D. White An asymmetric

The total synthesis of (-)- acorenone B ; Approaches to the synthesis of mycosporin (P 310)

Creator:: Ruppert, John Fredrick
Resource Type:: Dissertation
Full Text:: : Redacted for Privacy Dr, James D. White An improved technique for synthesis of p-hydroxy esters via the

Advances in solid phase synthesis of neutral oligonucleotide analogues

Creator:: Wang, Haiyan, 1963-
Abstract:: A novel acyl protecting group for cytosine and adenine has been prepared from 4-( chloromethyl) benzoic acid. Reaction of the acid with morpholine produces 4-( 4-morpholinyl )methyl benzoic acid which is converted to it's acid chloride with thionyl chloride. This may be used to acylate cytidine and adenosine under standard...
Resource Type:: Masters Thesis
Full Text:: Oligonucleotide Analogues Redacted for Privacy Abstract approved: Dwight D. Weller A novel acyl protecting

Synthesis of furanoeremophilane sesquiterpenoids

Creator:: Shanmugham, Meenakshi Sundaram
Abstract:: Two approaches to the tricyclic core of the furanoeremophilane sesquiterpenoids are described. The first approach entails a projected Diels-Alder/retro Diels-Alder reaction of an acetylenic oxazole 64. Construction of the pivotal aldehyde 67 commenced from ketone 68. The acetyenic moiety was then introduced via a Felkin-Ahn addition of lithiopropyne to aldehyde...
Resource Type:: Dissertation
Full Text:: FURANOEREMOPHILANE SESQUITERPENOIDS Abstract approved: James D. White Two approaches to the tricyclic core of the

Alkylation studies on Hagemann's ester: an approach to the synthesis of the trisporic acids

Creator:: Sung, Wing Lam
Abstract:: Sequential alkylation of Hagemann's ester with methyl and methallyl halides has been studied. Treatment of Hagemann's ester with methyl iodide and sodium ethoxide gave a mixture of 21 and 25 in a ratio of 4:1. Alkylation of 21 with methallyl chloride and potassium t-butoxide afforded a mixture of 37 and...
Resource Type:: Masters Thesis
Full Text:: Privacy James D. White Sequential alkylation of Hagemann's ester with methyl and methallyl halides has

ScholarsArchive@OSU

High resolution ionization-detected simulated Raman spectroscopy

Enantioselective Total Syntheses of Quinolizidine Lycopodium Alkaloid Cermizine D and Cytotoxic Marine Macrolide Mandelalide A

Studies of ammonia gas transport and fluorimetric detection in an aqueous solution

Examination of low-lying rovibrational states of D₃[subscript h] oblate top molecules using high resolution FTIR and coherent anti-Stokes Raman spectroscopies

Studies toward the total synthesis of (+)-providencin

Synthetic studies of nonadrides

The total synthesis of (-)- acorenone B ; Approaches to the synthesis of mycosporin (P 310)

Advances in solid phase synthesis of neutral oligonucleotide analogues

Synthesis of furanoeremophilane sesquiterpenoids

Alkylation studies on Hagemann's ester: an approach to the synthesis of the trisporic acids

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