Medicinal-Pharmaceutical Chemistry Commons^™

Ring Closures And The Hammond Postulate, Charles A. Kingsbury

Department of Chemistry: Faculty Publications

This work reports an investigation of ring closure processes in relation to the Hammond postulate. Calculations favor the importance of thermodynamics, not kinetics, as the basis for the Hammond postulate. A kinetically rapid, but thermodynamically unfavorable reaction is shown to resemble product. The ease of ring closure to three-membered rings, compared to four-membered rings, is thought to be associated with conformational mobility and perhaps vibrations coupled to the reaction coordinate motion in the case of four-membered rings.

Live, Attenuated Vaccines And Methods Of Making And Using, Jiantao Guo, Qingsheng Li, Wei Niu, Yue Li, Nanxi Wang

Department of Chemistry: Faculty Publications

A live, attenuated HIV vaccine is provided, and methods of making a atenuated HIV vaccine are provided.

Targeting Radioresistant Breast Cancer Cells By Single Agent Chk1 Inhibitor Via Enhancing Replication Stress, Yao Zhang, Jinzhi Lai, Zhanwen Du, Jinnan Gao, Shuming Yang, Shashank Gorityala, Xiahui Xiong, Ou Deng, Zhefu Ma, Chunhong Yan, Gonzalo Susana, Yan Xu, Junran Zhang

Chemistry Faculty Publications

Radiotherapy (RT) remains a standard therapeutic modality for breast cancer patients. However, intrinsic or acquired resistance limits the efficacy of RT. Here, we demonstrate that CHK1 inhibitor AZD7762 alone significantly inhibited the growth of radioresistant breast cancer cells (RBCC). Given the critical role of ATR/CHK1 signaling in suppressing oncogene-induced replication stress (RS), we hypothesize that CHK1 inhibition leads to the specific killing for RBCC due to its abrogation in the suppression of RS induced by oncogenes. In agreement, the expression of oncogenes c-Myc/CDC25A/c-Src/H-ras/E2F1 and DNA damage response (DDR) proteins ATR/CHK1/BRCA1/CtIP were elevated in RBCC. AZD7762 exposure led to significantly higher …

Processes And Reagents For Making Daryliodonium Salts, Stephen Dimagno

Department of Chemistry: Faculty Publications

This invention relates to processes and reagents for making diaryliodonium salts, which are useful for the preparation of fluorinated and radiofluorinated aromatic compounds.

Aprepitant, Emily Defend

Natural Sciences Student Research Presentations

This is a poster presented at the Natural Sciences Poster Session at Parkland College, which provides the chemical makeup, dosage, and the body's response to Aprepitant (Emend), a medication used to prevent acute and delayed nausea and vomiting associated with emetogenic chemotherapy.

Mirtazapine, Cassidy Hicks

Natural Sciences Student Research Presentations

This is a poster presented at the Natural Sciences Poster Session at Parkland College, which provides the chemical makeup, dosage, and the body's response to Mirtazapine(Remeron, Remeron SolTab), a medication used to treat depression.

Isotretinoin, Gina Wojnar

Natural Sciences Student Research Presentations

This is a poster presented at the Natural Sciences Poster Session at Parkland College, which provides the chemical makeup, dosage, and the body's response to Isotretinoin (Amnesteem, Claravis, Sotret), a medication used to treat severe recalcitrant cystic or conglobate acne in patients unresponsive to conventional treatment.

Aminosalicylic Acid (Paser), Vilas B. Vekaria

Natural Sciences Student Research Presentations

This is a poster presented at the Natural Sciences Poster Session at Parkland College, which provides the chemical makeup, dosage, and the body's response to Aminosalicylic Acid (Paser), a drug used with other medications for the treatment of tuberculosis.

The Study Of Nf-Κb Peptide Mimics And How Proteins Bind Dna, Allee M. Murray

Honors College Theses

The protein complex nuclear factor kappa B (NF-κB) is widely considered to be one of the most influential transcription factors when studying cellular functions. Peptide mimics of NF-κB aim to inhibit DNA binding in order to displace the natural transcription factor, therefore inhibiting transcription and translation. In theory, NF-κB is not the problem; the real problem lies in directing the synthesis and expression of harmful proteins. In conjunction with this, the project aims to study NF-κB and its structure and function to determine what criteria are important for the binding of DNA in order to design a peptide that comes …

Deterring Innovation: New York V. Actavis And The Duty To Subsidize Competitors' Market Entry, Joanna Shepherd

Faculty Articles

This Article examines a relatively new business strategy in the pharmaceutical market -- "product hopping" or "product replacement" -- in which brand pharmaceutical companies shift their marketing efforts from a drug nearing the end of its patent period to a new, substitute drug with a longer patent life. In July 2015, the Second Circuit issued an opinion in the first appellate case addressing pharmaceutical product replacement, New York ex rel. Schneiderman v. Actavis PLC. This Article explains that product replacement is the predictable business response to the incentives created by patent law and state substitution laws, and withdrawing an …

Mutagenesis-Based Active-Site Characterization Of The Diabetes Drug Target Mitoneet, Lisa Mickley

Williams Honors College, Honors Research Projects

This project investigates the cluster stability of an outer mitochondrial membrane protein mitoNEET under mutational stress and drug binding analysis. MitoNEET is a part of a class of proteins that coordinate an Fe-S molecule into its tertiary structure. This protein is believed to facilitate the oxidative capacity of the electron transport chain by reversible loss of its coordinated Fe-S molecule. The research of this paper uses site directed protein mutagenesis to selectively alter the three cysteine, one histidine cluster coordination into more common coordination patterns such as two cysteine, two histidine or four cysteine. The ultimate goal is to optimize …

Signature Of Coexistence Of Superconductivity And Ferromagnetism In Two-Dimensional Nbse2 Triggered By Surface Molecular Adsorption, Xiaojiao Zhu, Yuqiao Guo, Hao Cheng, Jun Dai, Xingda An, Jiyin Zhao, Kangzhen Tian, Shiqiang Wei, Xiao Cheng Zeng, Changzheng Wu, Yi Xie

Department of Chemistry: Faculty Publications

Ferromagnetism is usually deemed incompatible with superconductivity. Consequently, the coexistence of superconductivity and ferromagnetism is usually observed only in elegantly designed multi-ingredient structures in which the two competing electronic states originate from separate structural components. Here we report the use of surface molecular adsorption to induce ferromagnetism in two-dimensional superconducting NbSe₂, representing the freestanding case of the coexistence of superconductivity and ferromagnetism in one two-dimensional nanomaterial. Surface-structural modulation of the ultrathin superconducting NbSe₂ by polar reductive hydrazine molecules triggers a slight elongation of the covalent Nb–Se bond, which weakens the covalent interaction and enhances the ionicity of …

Engineering Escherichia Coli For High‑Yield Geraniol Production With Biotransformation Of Geranyl Acetate To Geraniol Under Fed‑Batch Culture, Wei Liu, Xin Xu, Rubing Zhang, Tao Cheng, Yujin Cao, Xiaoxiao Li, Jiantao Guo, Huizhou Liu, Mo Xian

Department of Chemistry: Faculty Publications

Background: Geraniol is an acyclic monoterpene alcohol, which exhibits good prospect as a gasoline alternative. Geraniol is naturally encountered in plants at low concentrations and an attractive target for microbial engineering. Geraniol has been heterologously produced in Escherichia coli, but the low titer hinders its industrial applications. Moreover, bioconversion of geraniol by E. coli remains largely unknown.

Results: Recombinant overexpression of Ocimum basilicum geraniol synthase, Abies grandis geranyl diphosphate synthase, and a heterotic mevalonate pathway in E. coli BL21 (DE3) enabled the production of up to 68.6 ± 3 mg/L geraniol in shake flasks. Initial fed-batch fermentation only increased geraniol …

Highly Porous Zirconium Metal−Organic Frameworks With Β‑Uh3‑Like Topology Based On Elongated Tetrahedral Linkers, Xin Zhang, Xu Zhang, Jacob A. Johnson, Yu-Sheng Chen, Jian Zhang

Department of Chemistry: Faculty Publications

Two non-interpenetrated zirconium metal−organic frameworks (Zr-MOFs), NPF-200 and NPF-201, were synthesized via the assembly of elongated tetrahedral linkers with Zr₆ and Zr₈ clusters. They represent the first examples of MOFs to have the β-UH₃-like, 4,12,12T1 topology. Upon activation, NPF-200 exhibits the largest BET surface area (5463 m²g⁻¹) and void volume (81.6%) among all MOFs formed from tetrahedral ligands. Composed of negative-charged boron-centered tetrahedral linkers, NPF-201 is an anionic Zr-MOF which selectively uptakes photoactive [Ru(bpy)₃]²⁺for heterogeneous photo-oxidation of thioanisole.

Additional supporting information files are attached below.

Close Encounters With Creative Chemical Thinking: An Outreach Presentation Using Movie Clips About The Elemental Composition Of Aliens And Extraterrestrial Minerals, Mark A. Griep, Marjorie L. Mikasen

Department of Chemistry: Faculty Publications

To introduce more chemistry into a middle and high school bioengineering camp experience, we developed an educational and entertaining presentation that examines the chemistry in movies about aliens and minerals from outer space. Our goal was to help the campers to think creatively about the bioengineering projects they are doing and about its chemistry. After watching each movie clip, we explain whether the chemistry in the clip is real or fake, and then describe the real chemistry that inspired it. The chemical touchstone for the presentation is the periodic table. First, the campers learn that aliens in five movies are …

Flexble Robotic Actuators, Aaron D. Mazzeo, Stephen A. Morin, Robert F. Shepherd, George M. Whitesides, William B. Kalb

Department of Chemistry: Faculty Publications

Some embodiments of the disclosed subject matter includes a laminated robotic actuator. The laminated robotic actuator includes a strain-limiting layer comprising a flexible, non extensible material in the form of a sheet or thin film, a flexible inflatable layer in the form of a thin film or sheet in facing relationship with the Strain-limiting layer, wherein the inflatable layer is selectively adhered to the strain-limiting layer, and wherein a portion of an un-adhered region between the strain-limiting layer and the inflatable layer defines a pressurizable channel, and at least one fluid inlet in fluid communication with the pressurizable channel. The …

Towards An Understanding Of Pharmacologically Induced Intracellular Changes In Nicotinic Acetylcholine Receptors: A Fluorescence Microscopy Approach, Ashley M. Loe

Theses and Dissertations--Chemistry

Upregulation of nicotinic acetylcholine receptors (nAChRs) is a well-documented response to chronic nicotine exposure. Nicotinic acetylcholine receptors are pentameric ligand-gated ion channels consisting of alpha (α2-10) and beta (β2-4) subunits. Nicotine, an agonist of nAChRs, alters trafficking and assembly of some subtypes of nAChRs, leading to an increase in expression of high sensitivity receptors on the plasma membrane. These physiological changes in nAChRs are believed to contribute to nicotine addiction, although the mechanism of these processes has not been resolved. Recently, many studies have converged on the idea that nicotine induces upregulation by an intracellular mechanism. In this dissertation, expression …

Probing Allosteric, Partial Inhibition Of Thrombin Using Novel Anticoagulants, Stephen S. Verespy Iii

Theses and Dissertations

Thrombin is the key protease that regulates hemostasis; the delicate balance between procoagulation and anticoagulation of blood. In clotting disorders, like deep vein thrombosis or pulmonary embolism, procoagulation is up-regulated, but propagation of clotting can be inhibited with drugs targeting the proteases involved, like thrombin. Such drugs however, have serious side effects (e.g., excessive bleeding) and some require monitoring during the course of treatment. The reason for these side effects is the mechanism by which the drugs’ act. The two major mechanisms are direct orthosteric and indirect allosteric inhibition, which will completely abolish the protease’s activity. Herein we sought an …