Index Catalog // ScholarsArchive@OSU

Approaches to the synthesis of polyketides. Vermiculine

Creator:: Kirkemo, Curtis Lee
Abstract:: An approach to the generation of polyketides was investigated, which involved ozonolysis of 6, 7 cyclopenteno -1> 4, 5, 8 -tetrahydromethoxy- 3-methylnaphthalene (26), to produce what is believed to be polyketide 27. Compound 26 was formed by the following sequence: Die ls -Alder addition of 1, 2 -dim.ethylenecyclopentane and 2...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF CURTIS LEE KIRKEMO for the

Condensation of crotonic and tiglic acids with aldehydes and ketones

Creator:: Johnson, Paul Robert
Resource Type:: Masters Thesis
Full Text:: School d Date thesis is presented November 18, 1982 Typed by Karen L. Johnson for Paul Robert Johnson

Total synthesis of (+)-bourgeanic acid and conformational analysis of its dilactone

Creator:: Johnson, Alan T. (Alan Thomas), 1957-
Resource Type:: Dissertation
Full Text:: analysis of its dilactone AN ABSTRACT OF THE THESIS OF Alan T. Johnson for the degree of Doctor of

Studies towards the total synthesis of (-)-kendomycin

Creator:: Smits, Helmars
Abstract:: Studies towards the total synthesis of (−)-kendomycin (1), a bacterial metabolite with a unique molecular architecture and pronounced biological activity, are described. These studies resulted in the synthesis of advanced intermediate 208, containing all of the carbon atoms of 1. A Dötz annulation between alkyne 122 and novel chromium carbenoid...
Resource Type:: Dissertation
Full Text:: amide 59. HO OTBDPS 1) (S)-D-N-diethoxyphosphono- acetylcamphorsultam, n-BuLi, THF 2) L

Studies toward the total synthesis of sanglifehrin A

Creator:: Suttisintong, Khomson
Abstract:: Studies toward synthesis of subunits of sanglifehrin A, an immunosuppressant featuring a highly substituted [5,5]-spirolactam moiety as well as a 22-membered macrocycle are described. The macrolactone contains a peptidic backbone characterized by an unusual [beta]-substituted (S)-piperazic acid and (S)-m-hydroxyphenylalanine units. These studies resulted in the synthesis of advanced intermediate 358...
Resource Type:: Dissertation
Full Text:: synthesis of (S)-m- hydroxyphenylalanine derivative 244. Assembly of 244, piperazic acid 113 and L- valine

The isolation and structure of leptosphaerin : a metabolite of the marine ascomycete, Leptosphaeria oraemaris (Linder) and A synthesis of the marine toxin, 9-isocyanopupukeanane

Creator:: Schiehser, Guy Alan
Abstract:: The ethyl acetate extract of the culture filtrate of the marine Ascomycete, Leptosphaeria oraemaris (Linder) yielded a novel metabolite designated by the common name leptosphaerin. An x-ray crystallographic structure analysis was disproved by the synthesis of 3-acetoxy-S-(1,2-dihydroxyethyl)- 3-pyrrolin-2-one 1, starting with N,N-dibenzylhydroxylamine 47 and D-mannitol 44. Oxidation of 47 followed...
Resource Type:: Dissertation
Full Text:: ethyldiazoacetate to give 4-carboxyethyl-l-methoxy-5-methyltricyclo[5.1.0.03'5]octane 26. Acid catalyzed

Studies towards the total synthesis of (-)-gymnodimine

Creator:: Wang, Guoqiang
Abstract:: Studies towards the total synthesis of (-)-gymnodimine (1), a marine neurotoxin with a unique molecular architecture and pronounced biological activity, are described. These studies resulted in a convergent approach to the advanced intermediate 315, containing the C3-C32 section of 1. Two synthetic routes were developed to construct the tetrahydrofuran subunit...
Resource Type:: Dissertation
Full Text:: .; Wright, J. L. C. Chein. Commun. 1995, 2159; b) Hu, T.; Curtis, J. M.; Walter, J. A.; Wright, J. L. C

Approaches to the synthesis of trichothecane sesquiterpenes

Creator:: Thomas, James Anthony
Resource Type:: Dissertation
Full Text:: . Mario Boschetto for his wizardry with glassware. Finally, I wish to acknowledge the N. L. Tartar

Total synthesis of indole alkaloids: pt. 1. Asymmetric synthesis of (-)-ibogamine. pt. 2. An approach toward the synthesis of koumine

Creator:: Choi, Younggi
Abstract:: PART I. The preparation of (-)-ibogamine (1) in fourteen steps from benzoquinone and in 10% overall yield is a powerful illustration of the value of the asymmetric Diels-Alder reaction as a starting point in a multistep synthesis. All four cycloadducts, 70, 77, 84 and 96, obtained with the (S)-BINOL-TiCl₂ complex...
Resource Type:: Dissertation
Full Text:: , Scott J. Kemp, Linda E. Keown, Jungchul Kim, Sung-kee Kim, Eric A. Korf, Christian L. Kranman, Punlop

Synthetic studies on alkaloids : part I, an approach toward the synthesis of (̳+)-koumine : part II, an approach toward the synthesis of (̳+)-morphine

Creator:: Stappenbeck, Frank
Resource Type:: Dissertation
Full Text:: system of 30 have been reported by the Hart, Johnson and Speckamp groups.16 Progress toward a very

ScholarsArchive@OSU

Approaches to the synthesis of polyketides. Vermiculine

Condensation of crotonic and tiglic acids with aldehydes and ketones

Total synthesis of (+)-bourgeanic acid and conformational analysis of its dilactone

Studies towards the total synthesis of (-)-kendomycin

Studies toward the total synthesis of sanglifehrin A

The isolation and structure of leptosphaerin : a metabolite of the marine ascomycete, Leptosphaeria oraemaris (Linder) and A synthesis of the marine toxin, 9-isocyanopupukeanane

Studies towards the total synthesis of (-)-gymnodimine

Approaches to the synthesis of trichothecane sesquiterpenes

Total synthesis of indole alkaloids: pt. 1. Asymmetric synthesis of (-)-ibogamine. pt. 2. An approach toward the synthesis of koumine

Synthetic studies on alkaloids : part I, an approach toward the synthesis of (̳+)-koumine : part II, an approach toward the synthesis of (̳+)-morphine

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