Cosmas Okoro, PhD
- Professor of Organic Chemistry
Phone
3500 John A. Merritt Blvd.
Nashville, TN 37209-1561
Cosmas Okoro, PhD
- Professor of Organic Chemistry
615-963-5332
cokoro@tnstate.edu
3500 John A. Merritt Blvd.
Nashville, TN 37209-1561
Research Program
Departments/Affiliations
Profile
related compounds increase topoisomerase II-mediated DNA cleavage and to develop novel members of this
chemical class with enhanced activity against type II topoisomerases and cancer cells. I am a chemist with
expertise in synthetic organic and medicinal chemistry. My graduate work focused on the development of new
applications of organosilicon reagents. As part of my dissertation work I successfully generated a silyl anion
equivalent as silicon-based nucleophile for silicon-carbon bond formation. The implication of having a silyl
moiety in a molecule is the stability of the Si-C bond. The molecule can be carried through multiple synthetic
sequence being robust to several reaction conditions, but can be easily removed using tetrabutylammonium
fluoride (aka TBAF). During my postdoctoral training I began working on the synthesis and pharmacological
evaluation of N-phenylcarbonylamino-1,2,3,6-tetrahydropyridine devoid of toxicity even at high dose levels, as
nonsteroidal anti-inflammatory and hyperglycemic agents. The above work led to three peer-reviewed
publications. I also worked as an NIH minority fellow in postdoctoral training in the laboratory of Professor
Gary L. Grunewald in the medicinal Chemistry program at University of Kansas. It was here that I developed
interest on the role of fluorine in drug discovery. My project at University of Kansas was to synthesize
fluorinated tetrahydroisoquinoline (THIQ) derivatives as inhibitors of phenylethanolamine-N-methyltransferase
devoid of α2-adrenoceptor affinity, for the treatment of high blood pressure. I have a long-standing interest in
chemistry outreach and mentoring of students. I was the founder of the first-ever student chapter of the
American Chemical Society at University of Arkansas Pine Bluff. I was also faculty advisor for the chemistry
club at Tennessee State University and was responsible for the award of three plaques as an outstanding
chapter for three consecutive years. In addition, I was chair of the Nashville section of American Chemical
Society. In addition to the above experience and to broaden my interest in drug discovery I attended a weeklong
American Chemical Society (ACS) course in Computational Chemistry and Computer-Assisted Drug
Design: Practical Approaches in 2004 at University of Texas, Austin and another ACS Short Course in
Structure Based Drug Design in San Francisco, CA in 2013. My research group at Tennessee State University
(TSU) was the first to develop procedure for the synthesis of fluorinated beta-diketone, which is currently used
as a versatile fluorine building block for the synthesis of a wide range of biologically active compounds, with
potential as anticancer agents. My current research focus is on medicinal and computational chemistry aimed
at anticancer drug discovery. In addition to small molecule synthesis, we perform structure-based/ fragment
based design, including virtual screening and qsar. I have mentored well over twenty undergraduate students
and a dozen masters students in chemistry at Tennessee State University, most of who have gone on to
complete their doctoral degrees in Chemistry at prestigious and larger institutions.
Education
- Ph.D., Howard University, Washington, DC (1993)
- M.S., North Carolina Central University, Durham, NC (1984)
- B.S., North Carolina Central University, Durham, NC (1981)
Post-Doctoral Training
- NIH Fellowship, University of Kansas (2000)
- Post-Doctoral, Florida A&M College of Pharmacy, Tallahassee, FL (1995)