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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:: AN ABSTRACT OF THE DISSERTATION OF Frank Stappenbeck for the

Synthetic studies on natural products : Part I. The total synthesis of ±-euonyminol and ±-3,4-dideoxymaytol : Part II. The absolute configuration and enantioselective synthesis of curacin A

Creator:: Kim, Tae-Seong
Resource Type:: Dissertation
Full Text:: Cutshall. I am indebted to Professor William H. Gerwick, Hye-Dong Yoo, Dale Nagle, and Robin Gerald in

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:: members of the White group, particularly Frank Stappenbeck, No-soo Kim, Tae-seong Kim, Scott Jeffery

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

Creator:: Johnson, Alan T. (Alan Thomas), 1957-
Resource Type:: Dissertation
Full Text:: organism, the lichen. This result suggests that the algal partner Scheme I 0 0 + 3 H 00C)SCoA SCoA HO

Approaches to the synthesis of trichothecenes

Creator:: Kim, No-soo
Resource Type:: Dissertation
Full Text:: members of the White group, especially Gary Bolton, Alan Johnson, Fraser Fleming, Hyunik Shin and Frank

Chiral synthesis of monic acid C

Creator:: Theramongkol, Parinya
Abstract:: Bromoalkoxylation of dihydropyran with bromine and 1-borneol, followed by dehydrobromination and epoxidation, afforded trans-2-1- bornyloxy-3,4-epoxytetrahydropyran as a major product. This was treated with sodium phenylselenide to give a 1:1 mixture of (2R,3R,4R)- 2-1-bornyloxy-3-hydroxy-4-phenylselenotetrahydropyran and its (2S,3S, 4S) diastereomer. Elimination of the selenoxide, derived from oxidation of the former with hydrogen...
Resource Type:: Dissertation
Full Text:: . Conformation of the Metal Ion Complex (M+ = e) of Lasalocid. 5 15 6 , R = H 7, R = OH 8 Ho 9 10 , R

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:: broadened singlet at 6 9.99. A more pronounced effect was 6 noted for the diacetate, where the N-H

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:: trichothecenes. H 10 :- 16 2 5 HO 14 OH OOCCH:CHMe HO. 0 2 0 2 a Representative members of the group

Synthetic studies on marine natural products : Part 1. Synthesis of the sesquiterpenoid dihydropallescensin D via manganese(III)- mediated carbocyclization. Part 2. Approaches toward the synthesis of prianosin and discorhabdin alkaloids

Creator:: Yager, Kraig M.
Resource Type:: Dissertation
Full Text:: , particularly John Amedio, Alan Johnson, Motoji Kawasaki, Steve Toske, Scott Jeffrey, Mark Jensen, Frank

Part I : synthesis of azetidin-2-ones from pyrazolidin-3-ones ; Part II : synthesis of a subunit of the immunosuppressant FK-506

Creator:: Toske, Steven Gerald
Resource Type:: Dissertation
Full Text:: . Michael P. Dillon for editing. several drafts of this thesis, Frank Stappenbeck for his X-ray

ScholarsArchive@OSU

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

Synthetic studies on natural products : Part I. The total synthesis of ±-euonyminol and ±-3,4-dideoxymaytol : Part II. The absolute configuration and enantioselective synthesis of curacin A

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

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

Approaches to the synthesis of trichothecenes

Chiral synthesis of monic acid C

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

Approaches to the total synthesis of verrucarol

Synthetic studies on marine natural products : Part 1. Synthesis of the sesquiterpenoid dihydropallescensin D via manganese(III)- mediated carbocyclization. Part 2. Approaches toward the synthesis of prianosin and discorhabdin alkaloids

Part I : synthesis of azetidin-2-ones from pyrazolidin-3-ones ; Part II : synthesis of a subunit of the immunosuppressant FK-506

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