Stereodivergent Synthesis of Enantioenriched Five- and Six-Membered Cyclic-1,3-diols and Applications Toward Library Synthesis

Abstract

Abstract This work describes the development of methods to access synthetically useful chiral diols in enantiomerically pure form. First chapter describes the development of a stereodivergent approach for enantioenriched synthesis of 2-cyclopentene-1,3-diol that was later converted to 4-hydroxy-2-cyclopentenones (4-HCPs), which are highly privileged synthetic building blocks with numerous applications in natural product syntheses and pharmaceuticals. The present approach enables the gram scale synthesis of 4-HCPs with chemically diverse protecting groups, in a stereodivergent manner. In chapter 2, we describe the development of a unified strategy for the stereodivergent synthesis of enantioenriched 1,3-dihydroxy substituted six-membered carbo- and heterocyclic rings. The previously known approaches for accessing these compounds involve multiple synthetic steps and one or more enzymatic steps. We developed a purely synthetic approach to synthesize enantioenriched carbo- and heterocyclic six-membered 1,3-diols from a common, highly economical commercial available starting material. In Chapter 3, we described the development of a small-molecule library of stereochemically diverse compounds by integrating enantioenriched carbo- and heterocyclic 1,3-diols, and natural α-amino acids.