The principal goal of this new research program is to design, synthesize and deliver a series of pilot-scale libraries comprised of structurally diverse """"""""natural product-like"""""""" compounds to the NIH Molecular Libraries Small-Molecule Repository (MLSMR) for high throughput screening. Toward this end, the PI has assembled a highly experienced, interdisciplinary team of investigators, including synthetic, medicinal and chemical informatics scientists, to assure that members of the proposed pilot scale libraries will cover broad areas of structural diversity not currently found in the NIH Small-Molecule Repository (vide infra), while at the same time having the requisite physiochemical and pharmacokinetic properties to be of value as probes for the exploration of biological systems at the molecular level. Particular emphasis will be placed on carbon-based libraries comprised of enantio- and diastereomerically pure natural product-like compounds. The specific synthetic tactics to be employed have their foundation in three exciting, new and efficient synthetic protocols developed recently in our laboratory, which, when employed in conjunction with the powerful synthetic tactics of ring closing metathesis (RCM), macrolactonization, and/or macrodimerization, hold great promise for the ready construction of diverse organic molecules that mimic both the architecture of complex natural products and their important bio-regulatory properties. The synthetic methods include: (a) Anion Relay Chemistry (ARC), (b) the Petasis-Ferrier Union/Rearrangement, and (c) the Chemo- and Stereoselective Functionalization of Polyenes Possessing Electron-Withdrawing Termini. Using these methods, we propose the synthesis of eight pilot-scale """"""""natural product-like"""""""" libraries including macrocarbacycles, macrolactones, tetrahydropyran-based, and alkaloid-like examples. When complete, the carefully designed libraries, exploiting the combined expertise of this consortium of scientists, should significantly augment the diversity of potential small probe molecules currently available to the NIH Small-Molecule Repository.
| Smith 3rd, Amos B; Kim, Won-Suk (2011) Diversity-oriented synthesis leads to an effective class of bifunctional linchpins uniting anion relay chemistry (ARC) with benzyne reactivity. Proc Natl Acad Sci U S A 108:6787-92 |
| Smith 3rd, Amos B; Kim, Won-Suk; Tong, Rongbiao (2010) Uniting anion relay chemistry with Pd-mediated cross coupling: design, synthesis and evaluation of bifunctional aryl and vinyl silane linchpins. Org Lett 12:588-91 |
| Smith, Amos B; Atasoylu, Onur; Beshore, Douglas C (2009) Construction of 5,6-Ring Fused 2-Pyridones: An Effective Annulation Tactic Achieved in Water. Synlett 2009:2643-2646 |
| Smith 3rd, Amos B; Wuest, William M (2008) Evolution of multi-component anion relay chemistry (ARC): construction of architecturally complex natural and unnatural products. Chem Commun (Camb) :5883-95 |
| Smith 3rd, Amos B; Kim, Won-Suk; Wuest, William M (2008) Ortho-TMS benzaldehyde: an effective linchpin for type II anion relay chemistry (ARC). Angew Chem Int Ed Engl 47:7082-6 |
