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Approaches toward synthesis of the mycosporins

Creator:: Cammack, Janice H.
Abstract:: The mycosporins, formerly called P310's are secondary metabolites of fungi closely associated with fungal reproductive processes that require light. The structurally related iminomycosporins are found in marine plants and animals and may also have functions related to light. In this study, approaches toward the asymmetric synthesis of the mycosporins are...
Resource Type:: Dissertation
Full Text:: . James D. White Abstract approved: The mycosporins, formerly called P310's are secondary metabolites

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:: cyclohexenone with 1 -bromo- 3-butene led to (S)-6-(3-butenyl)cyclohex-2-enone (59) after removal of the

Part I. The total synthesis of (±)-cinnamodial and related drimane sesquiterpenes; Part II. Photochemical activation of the carboxyl group via N-Acyl-2-thionothiazolidines

Creator:: Burton, Lester Percy Joseph
Resource Type:: Dissertation
Full Text:: , cinnamodial is much more effective against Spodoptera littoralis than against S. exempta. Field trials with

Approaches toward the asymmetric synthesis of pillaromycin A

Creator:: Nolen, Ernest G.
Resource Type:: Dissertation
Full Text:: the anion of ethyl 6-methoxy-2-methylbenzoate (34) was condensed with an appropriate s-alkoxy-a,3

Approaches to the total synthesis of verrucarol

Creator:: Hill, David E. (David Edwin) 1954-
Abstract:: Verrucarol is the sesquiterpene portion of a number of macrocyclic di- and triesters of potential medicinal importance. In this study, a novel approach to the synthesis of this fungal metabolite is presented. An A-B-C route was investigated in which C-3 and C-4 of the C-ring were emplaced using a [2+2]...
Resource Type:: Dissertation
Full Text:: Rose Bengal with a 400 Watt sodium lamp while bubbling oxygen through the solution. The ketolactone

An approach toward the synthesis of euonyminol and cathedulin K- 19

Creator:: Shin, Hyunik
Abstract:: A synthetic approach toward the two major fragments of cathedulin K-19, euonyminol (4) and dimethyl cathate (69), was investigated. Synthesis of dimethyl cathate was accomplished in 3 steps starting from 73. Efforts directed towards the synthesis of euonyminol, a highly oxygenated dihydroagarofuran sesquiterpene, was advanced to a stage in which...
Resource Type:: Dissertation
Full Text:: Chair of Department of Chemistry Dean of Graduate S Date thesis is presented January 11, 1994 Thesis

Approaches to the synthesis of penicillin

Creator:: Furuta, Takuya
Abstract:: Several approaches to the synthesis of penicillin from 2-iminothioazolidine 50, from 2-thiothiazolidine 66 and by photocyclization of 77 and 78 were investigated. 2-Iminothiazolidine 50 was prepared from dibromoester 45 by the action of benzylamine followed by treatment of aziridine 46 with potassium or ammonium thiocyanate. Attempted introduction of a two-carbon...
Resource Type:: Dissertation
Full Text:: S 1 HN COOH HOOC 13 HN COOH 0 4 t-BuO0C 9 CHO 7 Ac 20/60° HC1 H2O COOH NaOAc /H20

Phenolic oxidative coupling : an approach to the synthesis of pretazettine

Creator:: Chong, Wesley Kwan Mung
Abstract:: Various hypervalent iodine compounds were evaluated as reagents for intramolecular phenolic oxidative coupling. It was found that phenyliodine(III) bis(trifluoroacetate) was effective for the coupling of the monophenolic substrate 13a to 14a under neutral conditions. Vanadium oxytrifluoride and hypervalent iodine compounds were compared as oxidants for the conversion of 32 to...
Resource Type:: Dissertation
Full Text:: could not S be detected by nuclear magnetic resonance spectroscopy, since the amide 65 was insoluble

Structural and synthetic studies of higher terpenoids : Part I. The absolute configuration of (-)-botryococcene : Part II. Total synthesis of (±)-2-desoxystemodinone

Creator:: Somers, Todd Charles
Resource Type:: Dissertation
Full Text:: braunii (Kutzing) was out. Botryo- coccene was degraded to 4-methyl-7-butyrolactone, 2,5-dimethyl-S

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

Creator:: Ruppert, John Fredrick
Resource Type:: Dissertation
Full Text:: -lactone 42. Hydrogenation of 42 over Adams s catalyst followed by hydrogenolysis over palladium-on

ScholarsArchive@OSU

Approaches toward synthesis of the mycosporins

Synthesis of furanoeremophilane sesquiterpenoids

Part I. The total synthesis of (±)-cinnamodial and related drimane sesquiterpenes; Part II. Photochemical activation of the carboxyl group via N-Acyl-2-thionothiazolidines

Approaches toward the asymmetric synthesis of pillaromycin A

Approaches to the total synthesis of verrucarol

An approach toward the synthesis of euonyminol and cathedulin K- 19

Approaches to the synthesis of penicillin

Phenolic oxidative coupling : an approach to the synthesis of pretazettine

Structural and synthetic studies of higher terpenoids : Part I. The absolute configuration of (-)-botryococcene : Part II. Total synthesis of (±)-2-desoxystemodinone

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

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