We wish to continue our study of a new paradigm for the selective functionalization of complex molecules. Our approach is predicated on the development of fundamental reactions of functional groups that are ubiquitous in bioactive agents. The main emphasis of this proposal is the development of simple-to-make catalyst libraries that target functionalization of hydroxyl groups, amines and arene C-H bonds. Thus, the workhorse reactions we wish to develop are hydroxyl group transfer reactions (acylation, phosphorylation, sulfonylation and thiocarbonylation), amine group transfer reactions, and electrophilic aromatic substitutions. Each of these processes has been developed in our laboratory, and we wish to study these reactions in truly complex molecular arenas. Selective polyol derivatization reactions have value in and of themselves for natural product analog generation. Catalytic, site-selective amine functionalization within polyamines is virtually unknown, and we have initiated first steps for the development of these processes with a generalizable catalyst platform. So too of site-selective C-H bond functionalization in complex polycyclic arene-containing natural products. The significance of our overall goals may be in new catalysis principles, and in their application to the site-selective modification of complex, bioactive natural products. These studies extend fundamental studies of enantioselctivity to the less well-studied arena of regioselectivity. We now wish to expand greatly our studies ofthe selective derivatization of fascinating biological agents, including vancomycin and teicoplanin, as well as other complex antibiotics. In each case, we will continue to assess analogs for their novel antibiotic properties, hoping to extend further the exciting properties we have unearthed in the last couple years.

Public Health Relevance

We wish to develop new paradigms for the selective synthesis of complex natural product scaffolds. Progress in this field will enable efficient syntheses of complex, biologically active molecules. A particular emphasis will be on natural product diversification, which is a long-standing problem in the field of medicinal chemistry.

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Method to Extend Research in Time (MERIT) Award (R37)
Project #
5R37GM068649-17
Application #
9490365
Study Section
Special Emphasis Panel (NSS)
Program Officer
Lees, Robert G
Project Start
2003-08-01
Project End
2021-05-31
Budget Start
2018-06-01
Budget End
2019-05-31
Support Year
17
Fiscal Year
2018
Total Cost
Indirect Cost
Name
Yale University
Department
Chemistry
Type
Schools of Arts and Sciences
DUNS #
043207562
City
New Haven
State
CT
Country
United States
Zip Code
Wadzinski, Tyler J; Steinauer, Angela; Hie, Liana et al. (2018) Rapid phenolic O-glycosylation of small molecules and complex unprotected peptides in aqueous solvent. Nat Chem 10:644-652
Kwon, Yongseok; Chinn, Alex J; Kim, Byoungmoo et al. (2018) Divergent Control of Point and Axial Stereogenicity: Catalytic Enantioselective C-N Bond-Forming Cross-Coupling and Catalyst-Controlled Atroposelective Cyclodehydration. Angew Chem Int Ed Engl 57:6251-6255
Key, Hanna M; Miller, Scott J (2017) Site- and Stereoselective Chemical Editing of Thiostrepton by Rh-Catalyzed Conjugate Arylation: New Analogues and Collateral Enantioselective Synthesis of Amino Acids. J Am Chem Soc 139:15460-15466
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Chinn, Alex J; Kim, Byoungmoo; Kwon, Yongseok et al. (2017) Enantioselective Intermolecular C-O Bond Formation in the Desymmetrization of Diarylmethines Employing a Guanidinylated Peptide-Based Catalyst. J Am Chem Soc 139:18107-18114
Metrano, Anthony J; Abascal, Nadia C; Mercado, Brandon Q et al. (2017) Diversity of Secondary Structure in Catalytic Peptides with ?-Turn-Biased Sequences. J Am Chem Soc 139:492-516
Xiong, Hai; Reynolds, Noah M; Fan, Chenguang et al. (2016) [Dual genetic encoding of acetyl-lysine and non-deacetylatablethioacetyl-lysine mediated by flexizyme]. Angew Chem Weinheim Bergstr Ger 128:4151-4154
Xiong, Hai; Reynolds, Noah M; Fan, Chenguang et al. (2016) Dual Genetic Encoding of Acetyl-lysine and Non-deacetylatable Thioacetyl-lysine Mediated by Flexizyme. Angew Chem Int Ed Engl 55:4083-6
Wadzinski, Tyler J; Gea, Katherine D; Miller, Scott J (2016) A stepwise dechlorination/cross-coupling strategy to diversify the vancomycin 'in-chloride'. Bioorg Med Chem Lett 26:1025-1028

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