Sungkyunkwan University (SKKU) researchers led by Professor Do Hyun Ryu developed two asymmetric catalytic methods for synthesizing complex molecules, enabling precise control over reaction sites and three-dimensional structures using chiral organic catalysts. The work, published in Angewandte Chemie, expands possibilities for pharmaceutical and natural product synthesis.
Sungkyunkwan University (SKKU) researchers have made strides in asymmetric catalysis, creating new methods to construct complex molecules with precise stereocontrol. Professor Do Hyun Ryu’s team, in collaboration with KAIST, demonstrated catalysts that enable two distinct carbon–carbon bond-forming reactions with high selectivity, while another study focused on building multi-stereocenter ring structures from simple precursors. These advances, published in Angewandte Chemie International Edition, address longstanding challenges in organic synthesis by overcoming limitations in substrate versatility and stereoselectivity.
Breaking Barriers in Asymmetric Catalysis
The research team’s first breakthrough involves a unified catalytic platform that uses a single chiral organic catalyst to drive two different asymmetric reactions—allylation and aldol reactions—with exceptional selectivity. By tailoring the catalyst’s steric and electronic environment, the team achieved precise control over reaction sites and product stereochemistry. This approach, validated through density functional theory (DFT) calculations, allows the synthesis of chiral compounds with high efficiency, which can be further modified into biologically active molecules like (+)-dimethyl citramalate. The study, co-authored by KAIST’s Professor Hyunwoo Kim, highlights the potential of this platform to streamline multi-step syntheses.
A separate study by the same team focused on constructing tetrahydrofuran ring structures—critical in many natural products and pharmaceuticals—from simple, non-stereocentered starting materials. Traditionally, such reactions required pre-existing stereochemical complexity, but the team’s chiral catalyst enabled the formation of multiple stereocenters without this limitation. The method was applied to synthesize a key intermediate for (+)-altholactone, a compound with anticancer properties, demonstrating its utility in drug discovery.
Technical Innovations and Collaborative Efforts
The studies leverage chiral Brønsted acids, a class of catalysts known for their ability to induce enantioselectivity through hydrogen bonding or protonation.
Collaboration between SKKU and KAIST was pivotal in validating the catalysts’ mechanisms. The first study’s co-first authors included researchers from both institutions, while the second study’s lead authors were SKKU graduate students. Funding from South Korea’s National Research Foundation (NRF) and the Korea Basic Science Institute supported the work, underscoring its national scientific significance.
Implications for Drug Development and Beyond
The ability to control multiple reaction sites and stereocenters simultaneously represents a major leap in synthetic efficiency. For pharmaceutical companies, this could reduce the number of steps required to create complex molecules, lowering costs and improving yields. The research also aligns with global efforts to develop sustainable synthesis methods, as the catalysts operate at low loadings and avoid harsh reaction conditions.
The next phase of research will likely explore the scalability of these methods for industrial use and their application to other reaction types. SKKU’s team has already begun investigating how their catalysts can be adapted for large-scale pharmaceutical production. Meanwhile, the scientific community will monitor whether these techniques inspire new standards in asymmetric synthesis, potentially reshaping how complex molecules are designed and manufactured.
The work underscores South Korea’s growing role in advancing catalytic chemistry, with SKKU and KAIST serving as hubs for innovation. As the field evolves, the integration of computational modeling with experimental approaches—such as the DFT analyses in these studies—will remain critical for optimizing catalyst design and predicting reaction outcomes.