Former Wiemer Group Members

Benjamin J. Foust, Ph.D. 2019
Center for Biocatalysis & Bioprocessing Fellow, Ballard-Seashore Fellow
Synthesis of Asymmetric Phosphonate Prodrugs

Personal e-mail:

Parin Shah, Ph.D. 2018
Synthesis of Terpenoids using a Tandem Cationic Cascade Cyclization-Electrophilic Aromatic Substitution Reactions

Personal e-mail: 

Robert A. Mattheissen, Ph.D. 2018
Synthesis of Carboxyphosphonates and Bisphosphonates as Potential GGtase II and GGDPS Inhibitors

Personal e-mail:

David P. Stockdale, Ph.D. 2017
Center for Biocatalysis & Bioprocessing Fellow
The Synthesis of Isosteres of Pawhuskin and Schweinfurthin-based Stilbenes

Professional e-mail:  Personal e-mail: 

Kevyn D. Gardner Ricossa, Ph.D. 2016
Synthesis of Potential Opioids Based on the Natural Pawhuskins


Rebekah R. Shippy, Ph.D. 2016
Synthesis of Phosphoantigens and Chiral Trisphosphonates

Professional e-mail: 

Veronica S. Wills, Ph.D. 2015
AEGEP Fellowship,NIH Predoctoral Fellow -- Center for Biocatalysis & Bioprocessing Training Grant
Synthesis of Geminal Bisphosphonates as Potential Inhibitors of GGDPS 

Professional e-mail:  Personal e-mail: 

Xiang (Sean) Zhou, Ph.D. 2014
University of Iowa Graduate College Fellowship
Synthesis of Inhibitors Targeting the Downstream Enzymes in the Isoprenoid Biosynthetic Pathways

Personal e-mail:

Alyssa (Mick) Hartung, Ph.D. 2014
Potential Opioid Receptor Modulators Derived from Novel Stilbenes

Professional e-mail:  Personal e-mail: 

Rebekah M. Richardson, Ph.D. 2012
University of Iowa Presidential Fellow
New Synthesis and Reactions of Phosphonates

Professional e-mail:             Personal e-mail:

Jacqueline P. Smits, Ph.D.  2011
GAANN Fellow, Pharmacology Training Grant
Synthesis of Novel Bis- and Trisphosphonates

Joseph J. Topczewski, Ph.D. 2011
American Chemical Society, Division of Medicinal Chemistry Fellowship
Cascade Cyclizations and the Schweinfurthins

Professional e-mail:

John G. Kodet, Ph.D. 2010
University of Iowa Presidential Fellow
Studies on Heteroaromatic Schweinfurthin Analogues

Professional e-mail:

Rocky J. Barney, Ph.D.  2010
Synthesis and Biological Activity of Novel Phosphonates

Professional e-mail:

Natalie C. Ulrich, Ph.D. 2010
University of Iowa Presidential Fellow
Cascade cyclizations in total synthesis: applications to synthesis of cytotoxic natural products

Professional e-mail:

Michael P. Callahan, Ph.D. 2009
Stereocontrolled Synthesis of Functionalized Hexahydroxanthenes

Nolan Mente, Ph.D. 2008
University of Iowa Presidential Fellow
Cascade Cyclizations in Synthesis of Isoprenoid Natural Products

Professional e-mail:

Larry W. Shull, Ph.D. 2008
Phosphonate and Bisphosphonate Inhibitors of Isoprenoid Biosynthesis

Jose Yu, Ph.D. 2007
Stereocontrolled Olefin Synthesis in Preparation of Biologically Active Isoprenoid Organophosphorus Compounds

Professional e-mail:                         Personal e-mail:  

Mona A. Maalouf, Ph.D. 2006
Synthesis of Isoprenoids Incorporating a Fluorescent Label and Evaluation of their Effect on the Mevalonate Pathway

Professional e-mail:        Personal e-mail:

Sina I. Odejinmi, Ph.D. 2005
Synthesis of Bioactive Prenylated Aromatics

Professional e-mail:   Personal e-mail:

Jeffrey D. Neighbors, Ph.D. 2004
Predoctoral Fellowship, Breast Cancer Research Program
Synthetic Studies on the Schweinfurthin Family of Anticancer Compounds

Professional e-mail: 

XueMei Chen, Ph.D. 2002
Synthesis of Phosphonate Analogs of Cytosine Arabinoside Mono- and Diphosphate 

Professional E-mail (Albany Molecular Research):   Personal e-mail:

MeeKyoung (Suhyeon or Sue) Kim, Ph.D. 2002
Fluorescent Probes for Protein Prenylation and Tripeptidyl Probes for Tripeptidyl Protease

Professional e-mail: Personal e-mail: 

Yanming Du, Ph.D. 2002
Design and Synthesis of Farnesyl Pyrophosphate Analog

Professional e-mail:  Personal e-mail:

Liqiang Chen, Ph.D. 2002
Synthesis of Mannosamine Derivatives and Analogs

Professional e-mail: Personal e-mail:

Edward M. Treadwell, Ph.D. 2001
Studies in the Synthesis of Prenylated Aromatics: Schweinfurthins,  Arieanal, and Montadial

Professional e-mail:

LoriAnn Lentsch, Ph.D. 1999
Nucleophilic additions to ß-Keto Phosphonates

Professional e-mail:      Personal e-mail: or

Jeffrey Wilson, Ph.D. 1998
Synthetic Studies of the Aschochlorin Family

Professional e-mail:

Arlen Jeffery, Ph.D. 1998
Acyclic Nucleoside Phosphonates: Design and Synthesis of Novel Antiviral Agents

Shelly B. Blunt, Ph.D. 1998
Naturally Occurring PrenylatedPhenols: Structure Determination and Syntheses

Professional e-mail:

Mark F. Mechelke, Ph.D. 1998
University of Iowa Presidential Fellow
"Heads and Tails"  The Design and Synthesis of Novel RAS Farnesyl Transferase Inhibitors

Professional e-mail:

Steven C. Cermak, Ph.D. 1998
Directed Ortho Metalation in the Synthesis of Isoprenoid Natural Products

Professional e-mail:

Tracy J. Baker, Ph.D. 1998
Synthesis of Nonracemic Phosphonates and N-Acyl Mannosamines

Personal e-mail: 

Diana Pogatchnik (Cermak), Ph.D. 1997
Synthesis of Terpenoid Phosphonates as Potential Inhibitor s of RAS Farnesylation

Professional e-mail:

Jianguo (James) An, Ph.D. 1995
Diastereoselective Rearrangements of Vinyl Phosphates to ß-Keto Phosphonates and Their Application to Syntheses of Avarone Analogues

Personal e-mail:

Wendy Lan McEldoon, Ph.D. 1995
Synthesis of Nucleoside Phosphonates

Professional e-mail:

Kwangyong Park, Ph.D. 1993 (With Prof. William J. Scott)
Nickel Mediated Cross Coupling Reactions of neo-pentyl Iodides with Organometallic Compounds: Studies Directed toward the Total Synthesis of Arenarol

Professional e-mail:

Koo Lee, Ph.D. 1993
Synthesis and Applications of Phosphonates and Phosphates

Professional e-mail:    Personal e-mail:

Deborah Galinis, Ph.D. 1993
Chemical Investigations of Tropical Plants using Ecological and Medicinal Aproaches

Thomas E. Jacks, Ph.D. 1993
Studies Directed Toward the Total Synthesis of Avaarol and Capentin

Professional e-mail:  Personal e-mail:

Yi-Zhong An, Ph.D. 1992
SRegiochemistry and Stereochemistry of Vinyl Phosphate/ß-Keto Phosphonate Rearrangements

Profesional e-mail:   Personal e-mail:  :

Qi (Amy) Han, Ph.D. 1992
The Total Synthesis of (+)-Jatrophone

Professional e-mail:>

Tong-Bin Chen, Ph.D. 1991
Phytochemical Investigations of Casearia, Cornutia, Cupania, and Piper Species

Brian Becicka, Ph.D. 1991
Formation of a Versatile, Chiral, Nonracemic Methylcyclopentanoid Unit and Its Use in the Synthesis of the Lathyrane Skeleton

Terrence P. Green, Ph.D. 1990
Phytochemical Studies of Selected Species of Piper

Personal  e-mail:

John A. Jackson, Ph.D. 1990
New Chemistry of α-Phosphono Lactones

Professional e-mail:

Katherine (Kate) B. Gloer, Ph.D. 1988
Rearrangements in Keto Phosphonate and Dienyl Phosphate Systems

Professional e-mail:

Frederick Koerwitz, Ph.D. 1988
Synthesis of Vinyl Silane Phosphates and Chiral Cyclopentanoids

Vassilios Roussis, Ph.D. 1987
New Routes to ß-Keto phosphonates: Applications in the Synthesis of 3(2H)- and 2(3H)-Furanones

Professional e-mail:

Theodora Calogeropoulou, Ph.D. 1987
New Chemistry of Vinyl Phosphates: A Novel 1,3-Migration of Phosphorus from Oxygen to Carbon

Professional e-mail:

Terry D. Hubert, Ph.D. 1985
Studies in Natural Products Chemistry

Personal e-mail:

Marilyn Blagg (Cox), Ph.D. 1985
Strategies Toward the Synthesis and Isolation of Naturally Occurring Seed Germination Inhibitors

Professional e-mail:    Personal e-mail:

Diana C. Ales (Sprague), Ph.D. 1984
Isolation, Characterization, and Synthesis of Ant-Repellent Compounds from Selected Costa Rican Plant Species

Gary J. Drtina, Ph.D. 1983
Studies Toward the Total Synthesis of (+)-Jatrophone

Personal e-mail:



Postdoctoral Associates and Visiting Professors

Dr. Rocky J. Barney
PhD Institution: University of Iowa 
Dates: Summers of 2012 and 2013

Dr. Mona Maalouf
PhD Institution: University of Iowa
Dates:   January, 2005 to present

Dr. Jeffrey D. Neighbors
PhD Institution: University of Iowa
Dates:   August, 2004 to present

Dr. Natalie Ulrich
PhD Institution: University of Iowa
Dates:   October, 2011 to February, 2012

Dr. Donald Zehnder
PhD Institution: University of Cincinnati
Dates:   February, 2003 to January, 2004

Dr. Dragos Albinescu
PhD Institution: University of Illinois, Chicago
Dates:   August, 2002 to August, 2004

Prof. Kang-Yeoun Jung 
Home Institution: Kangnung National University, Republic of Korea
Dates:   March, 1999 to February, 2000
             Summers of 2001, 2002, 2003

Prof. DaeYoung Kim
Home Institution: Soonchunhyang University, Republic of Korea
Dates:   February, 2002 to January, 2003

Dr. Troy Kleckley
PhD Institution: Cornell University
Dates:   May, 2000 to September, 2000

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