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ContributorsChang, Ruihong (Performer) / ASU Library. Music Library (Publisher)
Created2018-03-29
Description
Cellular redox phenomena are essential for the life of organisms. Described here is a summary of the synthesis of a number of redox-cycling therapeutic agents. The work centers on the synthesis of antitumor antibiotic bleomycin congeners. In addition, the synthesis of pyridinol analogues of alpha-tocopherol is also described. The bleomycins (BLMs) are a group of glycopeptide antibiotics that have been used clinically to treat several types of cancers. The antitumor activity of BLM is thought to be related to its degradation of DNA, and possibly RNA. Previous studies have indicated that the methylvalerate subunit of bleomycin plays an important role in facilitating DNA cleavage by bleomycin and deglycobleomycin. A series of methylvalerate analogues have been synthesized and incorporated into deglycobleomycin congeners by the use of solid-phase synthesis. All of the deglycobleomycin analogues were found to effect the relaxation of plasmid DNA. Those analogues having aromatic C4-substituents exhibited cleavage efficiency comparable to that of deglycoBLM A5. Some, but not all, of the deglycoBLM analogues were also capable of mediating sequence-selective DNA cleavage. The second project focused on the synthesis of bicyclic pyridinol analogues of alpha-tocopherol. Bicyclic pyridinol antioxidants have recently been reported to suppress the autoxidation of methyl linoleate more effectively than alpha-tocopherol. However, the complexity of the synthetic routes has hampered their further development as therapeutic agents. Described herein is a concise synthesis of two bicyclic pridinol antioxidants and a facile approach to their derivatives with simple alkyl chains attached to the antioxidant core. These analogues were shown to retain biological activity and exhibit tocopherol-like behaviour.
ContributorsCai, Xiaoqing (Author) / Hecht, Sidney M. (Thesis advisor) / Gould, Ian R (Committee member) / Hartnett, Hilairy E (Committee member) / Arizona State University (Publisher)
Created2011
Description
Combretastatin A-4 (CA-4) represents one of the most promising antineoplastic and cancer vascular targeting stilbenes that have been isolated from the South African bush willow, Combretum Caffrum Kuntze. In order to further explore the bioactivity of this molecule, a diiodo derivative of CA-4, as well as its phosphate prodrug, was synthesized and analyzed for its biological activity; although only a scale up synthesis of this compound was performed herein for ongoing analysis. In general, no increased specificity was noted for the human cancer cell lines. Antiangiogenic properties were similar to the untreated control. The diiodocombstatin was active against M. luteus, and its phosphate prodrugs were very active against N. gonorrhoeae. Combretastain A-2 is another biologically active stilbene isolated from Combretum Caffrum Kuntze. In an attempt to increase biological activity of this molecule both mono-iodo and diiodo derivatives have been partially synthesized. The initial step involving the iodination of piperonal utilizes a novel, cost effective and mild reaction. The iodo stilbenes were obtained via a Wittig reaction using phosphonium salts 25 and 27 along with 2,3-Bis-[tert-butyldimethylsiloxy]-4-methoxy benzaldehyde 29. Deprotection of the subsequent z-stilbenes, non-isolated mono-iodo stilbene and the diiodo 30 produced two synthetic objective z-stilbenes 16 and 17. Synthesis as well as biological analysis is ongoing.
ContributorsTrickey-Platt, Brindi Brooks (Author) / Pettit, George R. (Thesis advisor) / Moore, Ana (Committee member) / Skibo, Edward (Committee member) / Arizona State University (Publisher)
Created2011
Description
Four Souvenirs for Violin and Piano was composed by Paul Schoenfeld (b.1947) in 1990 as a showpiece, spotlighting the virtuosity of both the violin and piano in equal measure. Each movement is a modern interpretation of a folk or popular genre, re- envisioned over intricate jazz harmonies and rhythms. The work was commissioned by violinist Lev Polyakin, who specifically requested some short pieces that could be performed in a local jazz establishment named Night Town in Cleveland, Ohio. The result is a work that is approximately fifteen minutes in length. Schoenfeld is a respected composer in the contemporary classical music community, whose Café Music (1986) for piano trio has recently become a staple of the standard chamber music repertoire. Many of his other works, however, remain in relative obscurity. It is the focus of this document to shed light on at least one other notable composition; Four Souvenirs for Violin and Piano. Among the topics to be discussed regarding this piece are a brief history behind the genesis of this composition, a structural summary of the entire work and each of its movements, and an appended practice guide based on interview and coaching sessions with the composer himself. With this project, I hope to provide a better understanding and appreciation of this work.
ContributorsJanczyk, Kristie Annette (Author) / Ryan, Russell (Thesis advisor) / Campbell, Andrew (Committee member) / Norton, Kay (Committee member) / Arizona State University (Publisher)
Created2015
ContributorsWhite, Aaron (Performer) / Kim, Olga (Performer) / Hammond, Marinne (Performer) / Shaner, Hayden (Performer) / Yoo, Katie (Performer) / Shoemake, Crista (Performer) / Gebe, Vladimir, 1987- (Performer) / Wills, Grace (Performer) / McKinch, Riley (Performer) / Freshmen Four (Performer) / ASU Library. Music Library (Publisher)
Created2018-04-27
ContributorsRosenfeld, Albor (Performer) / Pagano, Caio, 1940- (Performer) / ASU Library. Music Library (Publisher)
Created2018-10-03
ContributorsCao, Yuchen (Performer) / Chen, Sicong (Performer) / Soberano, Chino (Performer) / Nam, Michelle (Performer) / Collins, Clarice (Performer) / Witt, Juliana (Performer) / Liu, Jingting (Performer) / Chen, Neilson (Performer) / Zhang, Aihua (Performer) / Jiang, Zhou (Performer) / ASU Library. Music Library (Publisher)
Created2018-04-25
ContributorsMcLin, Katherine (Performer) / Campbell, Andrew (Pianist) (Performer) / Ericson, John Q. (John Quincy), 1962- (Performer) / McLin/Campbell Duo (Performer) / ASU Library. Music Library (Publisher)
Created2018-09-23