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Synthesis and Characterization of Antifungal Kinase Inhibitors and β-Lactam Antibiotics
Synthesis and Characterization of Antifungal Kinase Inhibitors and β-Lactam Antibiotics
Synthesis and Characterization of Antifungal Kinase Inhibitors and β-Lactam Antibiotics

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202103134
ISBN  
9798291554845
DDC  
615
저자명  
Shirley, David J.
서명/저자  
Synthesis and Characterization of Antifungal Kinase Inhibitors and β-Lactam Antibiotics
발행사항  
[Sl] : The University of North Carolina at Chapel Hill, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
220 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
주기사항  
Advisor: Willson, Timothy M.
학위논문주기  
Thesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2025.
초록/해제  
요약With the most recent COVID-19 pandemic having a global impact on the population and healthcare system, there is a need to focus efforts on development of anti-infective agents. Antimicrobial resistance is increasing among bacteria and fungi, leading to a growing number of mortalities related to pathogen infection. Our work focused on developing newly characterized antifungal kinase inhibitors and modernizing the synthesis of penicillin.Kinase inhibitors have been extensively studied for use in humans but scarcely applied as anti-infective agents. The UNC-Structural Genomic Consortium previously discovered a kinase inhibitor from the Published Kinase Inhibitor Set that acts as an antifungal against pathogenic Candida albicans via inhibition of yeast casein kinase 2 (Yck2). We sought to characterize the C. albicans kinome via chemoproteomics to define the selectivity of current Yck2 inhibitors. Using multiplexed inhibitor beads (MIBS) alongside tandem mass spectrometry analysis, we successfully captured 89% of the fungal kinome and were able to profile the selectivity of lead antifungal kinase inhibitors YK and MN across the fungal and human kinome. Using our knowledge of human kinase inhibitors, we selected thirteen human casein kinase 1 (CK1) inhibitors from literature to repurpose for antifungal activity. Hit compound LY was determined via MIBS experiments and cell-based target engagement. Medicinal chemistry efforts were employed to improve LY's Yck2 potency and selectivity. Our results from cell-based assays and crystal structures establish early SAR en route to a potent, selective antifungal kinase inhibitor.Electrochemistry has garnered attention for its ability to implement "green chemistry" for performing chemoselective C-H functionalization that was previously unobtainable across many scaffolds. We sought to implement electrochemistry to access penicillin by means of modern chemistry for expeditious derivatization of the penam scaffold. Model molecules and penicillin intermediates showed the ability to undergo chemoselective Shono-oxidation in good yields. Attempts to perform intramolecular cyclization failed. Penicillin intermediates displayed an ability to undergo nucleophilic displacement of methoxy-thioaminals by carbon-based nucleophiles to afford interesting scaffolds. Shono-oxidation in HFIP was found to take place with isolatable intermediates, however current displacement conditions failed to work. These proof-of-concept experiments showed the ability to electrochemically oxidize thiazolines chemoselectively for different transformations.
일반주제명  
Pharmaceutical sciences
일반주제명  
Chemistry
일반주제명  
Microbiology
일반주제명  
Biochemistry
키워드  
Antifungals
키워드  
Chemoproteomics
키워드  
Kinase inhibitors
키워드  
Multiplexed inhibitor beads
키워드  
Candida albicans
키워드  
Green chemistry
기타저자  
The University of North Carolina at Chapel Hill Pharmaceutical Sciences
기본자료저록  
Dissertations Abstracts International. 87-02B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aShirley,  David  J.
■24510▼aSynthesis  and  Characterization  of  Antifungal  Kinase  Inhibitors  and  β-Lactam  Antibiotics
■260    ▼a[Sl]▼bThe  University  of  North  Carolina  at  Chapel  Hill▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a220  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-02,  Section:  B.
■500    ▼aAdvisor:  Willson,  Timothy  M.
■5021  ▼aThesis  (Ph.D.)--The  University  of  North  Carolina  at  Chapel  Hill,  2025.
■520    ▼aWith  the  most  recent  COVID-19  pandemic  having  a  global  impact  on  the  population  and  healthcare  system,  there  is  a  need  to  focus  efforts  on  development  of  anti-infective  agents.  Antimicrobial  resistance  is  increasing  among  bacteria  and  fungi,  leading  to  a  growing  number  of  mortalities  related  to  pathogen  infection.  Our  work  focused  on  developing  newly  characterized  antifungal  kinase  inhibitors  and  modernizing  the  synthesis  of  penicillin.Kinase  inhibitors  have  been  extensively  studied  for  use  in  humans  but  scarcely  applied  as  anti-infective  agents.  The  UNC-Structural  Genomic  Consortium  previously  discovered  a  kinase  inhibitor  from  the  Published  Kinase  Inhibitor  Set  that  acts  as  an  antifungal  against  pathogenic  Candida  albicans  via  inhibition  of  yeast  casein  kinase  2  (Yck2).  We  sought  to  characterize  the  C.  albicans  kinome  via  chemoproteomics  to  define  the  selectivity  of  current  Yck2  inhibitors.  Using  multiplexed  inhibitor  beads  (MIBS)  alongside  tandem  mass  spectrometry  analysis,  we  successfully  captured  89%  of  the  fungal  kinome  and  were  able  to  profile  the  selectivity  of  lead  antifungal  kinase  inhibitors  YK  and  MN  across  the  fungal  and  human  kinome.  Using  our  knowledge  of  human  kinase  inhibitors,  we  selected  thirteen  human  casein  kinase  1  (CK1)  inhibitors  from  literature  to  repurpose  for  antifungal  activity.  Hit  compound  LY  was  determined  via  MIBS  experiments  and  cell-based  target  engagement.  Medicinal  chemistry  efforts  were  employed  to  improve  LY's  Yck2  potency  and  selectivity.  Our  results  from  cell-based  assays  and  crystal  structures  establish  early  SAR  en  route  to  a  potent,  selective  antifungal  kinase  inhibitor.Electrochemistry  has  garnered  attention  for  its  ability  to  implement  "green  chemistry"  for  performing  chemoselective  C-H  functionalization  that  was  previously  unobtainable  across  many  scaffolds.  We  sought  to  implement  electrochemistry  to  access  penicillin  by  means  of  modern  chemistry  for  expeditious  derivatization  of  the  penam  scaffold.  Model  molecules  and  penicillin  intermediates  showed  the  ability  to  undergo  chemoselective  Shono-oxidation  in  good  yields.  Attempts  to  perform  intramolecular  cyclization  failed.  Penicillin  intermediates  displayed  an  ability  to  undergo  nucleophilic  displacement  of  methoxy-thioaminals  by  carbon-based  nucleophiles  to  afford  interesting  scaffolds.  Shono-oxidation  in  HFIP  was  found  to  take  place  with  isolatable  intermediates,  however  current  displacement  conditions  failed  to  work.  These  proof-of-concept  experiments  showed  the  ability  to  electrochemically  oxidize  thiazolines  chemoselectively  for  different  transformations.
■590    ▼aSchool  code:  0153.
■650  4▼aPharmaceutical  sciences
■650  4▼aChemistry
■650  4▼aMicrobiology
■650  4▼aBiochemistry
■653    ▼aAntifungals
■653    ▼aChemoproteomics
■653    ▼aKinase  inhibitors
■653    ▼aMultiplexed  inhibitor  beads
■653    ▼aCandida  albicans
■653    ▼aGreen  chemistry
■690    ▼a0572
■690    ▼a0485
■690    ▼a0410
■690    ▼a0487
■71020▼aThe  University  of  North  Carolina  at  Chapel  Hill▼bPharmaceutical  Sciences.
■7730  ▼tDissertations  Abstracts  International▼g87-02B.
■790    ▼a0153
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357115▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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