Representative Publications

• Stenfors, B. A.; Ngassa, F. N. Sulfonamides and Sulfonate Esters: Synthetic Routes, Proposed Mechanisms, and Crystallographic Characterizations. Eur. J. Chem. 2024, 15, 282-290.
• Stenfors,* B. A.; Ngassa, F. N. “Crystal Structure of 2,4-Dinitrophenyl 2,4,6-trimethylbenzenesulfonate” Eur. J. Chem. 2022, 13 (2), 145-150.
• Stenfors,* B. A.; Ngassa, F. N. “The Synthesis and Crystallographic Characterization of 4-methylbenzenesulfonamide Derivatives” Eur. J. Chem. 2021, 12 (2), 109-116.
• Stenfors,* B. A.; Ngassa, F. N. “Synthesis and Crystallographic Characterization of N-Allyl-N-benzyl-4-methylbenzenesulfonamide” Eur. J. Chem. 2020, 11 (3), 245-249.
• Stenfors,* B. A.; Staples, R. J.; Biros, S. M.; Ngassa, F. N. “Synthesis and Crystallographic Characterization of X-Substituted 2,4-Dinitrophenyl-4’-phenylbenzenesulfonates” Chemistry 2020, 2, 591-599.  * Our paper was highlighted and was on the cover as part of the Special Issue “Memorial Issue Dedicated to Dr. Howard D. Flack: The Man behind the Flack Parameter”
• Stenfors,* B. A.; Staples, R. J.; Biros, S. M.; Ngassa, F. N. “Crystal Structure of 4-Methylbenzylamine-4-methylbenzenesulfonamide” Acta Crystallographica Section E Crystallographic Communications 2020, E76, 235-238.
• Stenfors,* B. A.; Staples, R. J.; Biros, S. M.; Ngassa, F. N. “Crystal Structure of 1-[(4-Methylbenzene)sulfonyl]pyrrolidine” Acta Crystallographica Section E Crystallographic Communications 2020, E76, 452-455.
• Stenfors,* B. A.; Staples, R. J.; Biros, S. M.; Ngassa, F. N. “Crystal Structure of N,N-Diisopropyl-4-methylbenzenesulfonamide” Acta Crystallographica Section E Crystallographic Communications 2020, E76, 1018-1021.
• Stenfors,* B. A.; Collins,* R. C.; Duran,* J. R. J.; Staples, R. J.; Biros, S. M.; Ngassa, F. N. “Crystal Structure of 4-Methyl-N-Propylbenzenesulfonamide” Acta Crystallographica Section E Crystallographic Communications 2020, E76, 1070-1074.
• Ngassa, F. N.; Jungong, A. C.; Aleksandrov, T.; Nori, R.; Erickson, J.; Thomasson, K. A.; Uporov, I. V.; Austhof, E. R.; Holt, E. “Theoretical Circular Dichroism Spectra of the a-Helical Protein Calexcitin with the Dipole Interaction Model Including the n-p* Transition” Journal of Undergraduate Chemistry Research 2018, 17(2), 25-31.  * Our structure of Calexcitin made the cover of the journal, Volume 17, Number 2, ISSN: 1541-6003
• Patel, Z. S.; Stevens, A. C.; Bookout, E. C.; Staples, R. J.; Biros, S. M.; Ngassa, F. N. “Crystal Structure of N-Allyl-4-methylbenzenesulfonamide” Acta Crystallographica Section E Crystallographic Communications 2018, E74, 1126-1129.
• Ngassa, F. N.; Riley, S.; Atanasova, T. P.; Ahmed, A. O.; Kerr, S.; Cooley, T. A.; Dawood, I. A.-S.; Austhof, E. R.; Duran, J. R. J.; Franklin, M. “Facile Synthesis of Arylsulfonates from Phenol Derivatives and Sulfonyl Chlorides” Trends in Organic Chemistry 2017, 18, 1-14.
• Ngassa, F. N.; Riley, S.; Atanasova, T. P.; Ahmed, A. O.; Kerr, S.; Cooley, T. A.; Dawood, I. A.-S.; Austhof, E. R.; Duran, J. R. J.; Franklin, M. “Facile Synthesis of Arylsulfonates from Phenol Derivatives and Sulfonyl Chlorides” Trends in Organic Chemistry Vol 18 2016.
• Riley, S.; Staples, R. J.; Biros, S. M.; Ngassa, F. N. “Crystal Structure of Phenyl 2,4,5-Trichlorobenzenesulfonate” Acta Crystallographica Section E Crystallographic Communications 2016, 72, 789-792.
• Ngassa, F. N.; Biros, S. M.; Staples, R. J. “Crystal Structure of N-[(1S,2S)-2-aminocyclohexyl]-2,4,6-trimethylbenzenesulfonamide” Acta Crystallographica Section E Crystallographic Communications 2015, 71, 1521-1524.
• Waingeh, V. F.; Ngassa, F. N.; Song, J. “A Theoretical Study of b-Amino Acid Conformational Energies and Solvent Effect” Open Journal of Physical Chemistry 2015, 5, 122-131.
• Cooley, T. A.; Riley, S.; Biros, S. M.; Staples, R. J.; Ngassa, F. N. “Crystal Structure of 2,4-Dinitrophenyl 4-methylbenzenesulfonate: A New Polymorph” Acta Crystallographica Section E Crystallographic Communications 2015, 71, 1085-1088.
• Atanasova, T. P.; Riley, S.; Biros, S. M.; Staples, R. J.; Ngassa, F. N. “Crystal Structure of 3,5-Dimethylphenyl 2-nitrobenzenesulfonate” Acta Crystallographica Section E Crystallographic Communications 2015, 71, 1045-1047.
• Ngassa, F. N.; Gomez*, J. M.; Haines*, B. E.; Ostach*, M. J.; Hector*, J. W.; Hoogenboom*, L. J.; Page*, C. E. “Facile Cu-free Sonogashira Cross-Coupling of Nucleoside C-6 Arylsulfonates with Terminal Alkynes” Tetrahedron 2010, 66, 7919-7926.
• Ngassa, F. N.; Lindsey*, E. A.; Haines*, B. E. “The First Cu- and Amine- Free Sonogashira-Type Cross-Coupling in the C-6-Alkynylation of Protected 2’- Deoxyadenosine” Tetrahedron 2009, 65, 4085-4091.
• Nkabyo, E. M.; Lindsey*, E. A.; Haines*, B. E.; Thomasson, K. A.; Ngassa, F. N. “Understanding the Interactions of β-Peptides with each other and with the Human Leucine Zipper: A Computational Modeling Study” J. Undergrad. Chem. Res., 2008, 7, 98-107.
• Lakshman, M. K.; Keeler, J. C.; Ngassa, F. N.; Hilmer, J. H.; Pradhan, P.; Zajc, B.; Thomasson, K. A. “Highly Diastereoselective Synthesis of Nucleoside Adducts from the Carcinogenic Benzo[a]pyrene Diol Epoxide and a Computational Analysis” J. Am. Chem. Soc. 2007, 129, 68-76.
• Ngassa F. N.; DeKorver*, K. A.; Melistas*, T. S.; Yeh, E. A.-H.; Lakshman, M. K. “Pd-Xantphos-Catalyzed Direct Arylation of Nucleosides” CUR Quarterly 2007, 27, 135. 
• Ngassa F. N.; DeKorver*, K. A.; Melistas*, T. S.; Yeh, E. A.-H.; Lakshman, M. K. “Pd-Xantphos-Catalyzed Direct Arylation of Nucleosides” Org. Lett. 2006, 8, 4613-4616.
• Gellman, S. H.; Hayen, A.; Schmitt, M. A.; Ngassa, F. N. “Heterogeneous Foldamers Containing α, β and/or γ-Amino Acids” PCT Int. Appl. (2004), 149 pp. CODEN: PIXXD2 WO 2004018644 A2 20040304 CAN 140:183000 CAPLUS.
• Hayen, A.; Schmitt, M. A.; Ngassa, F. N.; Thomasson, K. A.; Gellman, S. H. “Two Helical Conformations from a Single Foldamer Backbone: Split Personality in Short α/β-Peptides ” Angew. Chem. Int. Ed. 2004, 43, 505-510.
• Huber, A.; Nkabyo, E.; Warnok, R.; Skalsky, A.; Kuzel, M.; Gelling, V. J.; Dillman, T. B.; Ward, M.; Guo, R.; Adams, G. K.; Vollmer, S.; Ngassa, F. N.; Lowe, S. L.; Ouporov, I. V.; Thomasson, K.; “A Conformational Search and Calculation of the Circular Dichroic Spectrum of the Flexible Peptide Cyclo(Gly-Pro-Gly)₂ Using the Dipole Interaction Model” J. Undergrad. Chem. Res., 2003, 4, 145-161.
• Lakshman, M. K.; Ngassa, F. N.; Bae, S.; Buchanan, D. G.; Hahn, H-G.; Mah, H. “Synthesis of Pyrene and the Benzo[a]pyrene Adducts at the Exocyclic Amino Groups of 2’-Deoxyadenosine and 2’-Deoxyguanosine by a Palladium-Mediated C-N Bond-Formation Strategy” J. Org. Chem. 2003, 68, 6020-6030.
• Lakshman, M. K.; Hilmer, J. H.; Martin, J. Q.; Keeler, J. C.; Dinh, Y. Q. V.; Ngassa, F.N.; Russon, L. M. “Palladium Catalysis for the Synthesis of Hydrophobic C-6 and C-2 Aryl 2’-Deoxynucleosides. Comparison of C-C versus of C-N Bond Formation as well as C-6 versus C-2 Reactivity” J. Am. Chem. Soc. 2001, 123, 7779-7787.
• Lakshman, M. K.; Ngassa, F. N.; Keeler, J. C.; Dinh, Y. Q. V.; Hilmer, J. H.; Russon, L. M.“Facile Synthesis of O⁶-Alkyl, O⁶-Aryl and Diaminopurine Nucleosides from 2’-Deoxyguanosine” Org. Lett. 2000, 2, 927-930.