In a major step for chemistry and drug development, researchers have designed a new way to edit molecules without rebuilding them from scratch. The method allows scientists to precisely move specific parts of a molecule, called alcohol groups, from one position to another.
The work, published in Nature, comes from a team at the Massachusetts Institute of Technology (MIT), led by Professor Alison Wendlandt. The project was developed over several years in collaboration with pharmaceutical company Bristol Myers Squibb.
For decades, chemists have faced a major challenge. Even a tiny change in a molecule’s structure can completely change how it behaves. This is especially important in fields like drug discovery and materials science. However, making these small changes has traditionally required rebuilding the entire molecule from the beginning. That process is slow, expensive, and inefficient.
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Researchers often compare it to tearing down a house just to move a lamp. The new method changes that.
Instead of starting over, scientists can now directly edit molecules. They can shift the functional groups of alcohol, key parts that influence how molecules react, without disturbing the rest of the structure.
The technique uses a light-activated catalyst, decatungstate. When exposed to light, this catalyst triggers a controlled reaction that moves the alcohol group to a nearby position. The process is highly precise and predictable.
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Importantly, the molecule keeps its original three-dimensional shape during the shift. This stability is crucial, especially in drug design, where the exact shape of a molecule determines how it interacts with the human body.
The method also works on complex molecules that are already close to their final form. This makes it especially useful in late-stage drug development, where small adjustments can improve performance or reduce side effects.
“This alcohol migration strategy allows precise tuning of oxygen atom positions,” said co-first author Qian Xu, a postdoctoral researcher in the Wendlandt Group. “It works with strong control over structure and can be used at later stages, making it very useful for modifying drugs and natural products.”
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The ability to fine-tune molecules without waste opens new possibilities. Scientists can now explore chemical designs that were previously difficult or impossible to achieve. It also reduces time and cost in research and development.
Beyond pharmaceuticals, the technique could impact the creation of new materials and agricultural chemicals. By enabling more efficient molecular design, it offers a flexible tool for multiple industries.
The research team includes co-lead author Yichen Nie, postdoc Ronghua Zhang, and Professor Jeremiah A. Johnson from MIT. Contributors also came from the University of Groningen, Bristol Myers Squibb, and Actithera.
Their work marks a shift toward more precise and efficient chemistry where molecules are no longer rebuilt, but carefully edited.
