Nobel Prize in Chemistry Awarded for Molecular Chirality Breakthrough
Translated & summarized from Globes by baba
Henry Kagan and Kenso Soai won the 2026 Nobel Prize in Chemistry for developing methods to produce single enantiomers of molecules. This breakthrough allows for the targeted creation of specific molecular forms, crucial for pharmaceuticals where the mirror-image version can cause side effects. Soai's 2003 experiment demonstrated self-replication of a single enantiomer, achieving 99.99% purity. Kagan, who previously won the Wolf Prize, received this recognition at age 95.
The story in 5 lines · by baba
- Henry Kagan and Kenso Soai won the 2026 Nobel Prize in Chemistry for producing single molecular forms.
- Their work solves the challenge of creating only one of two mirror-image molecules, vital for medicine.
- Kenso Soai's 2003 experiment showed a single enantiomer self-replicating to 99.99% purity.
- The development allows for targeted drug creation, avoiding harmful mirror-image side effects.
- Kagan, 95, previously received the Israeli Wolf Prize for related research.
The 2026 Nobel Prize in Chemistry has been awarded to Henry Kagan of Paris-Sud University in France and Kenso Soai of the Science University of Tokyo for their groundbreaking work in producing molecules with specific directional properties. This advancement addresses a long-standing challenge in chemistry, particularly in the pharmaceutical industry, where producing only one of two mirror-image versions of a molecule, known as enantiomers, has significant advantages.
Historically, chemical processes often yield both mirror-image forms of a molecule, but only one is typically effective for medical applications, while the other can be ineffective or even harmful. The Nobel Committee likened the problem to a lock manufacturer producing two keys for every lock, where only one works, and the other is useless or detrimental. This is crucial because drug interactions with the body's receptors are highly specific, akin to a key fitting a lock. The body naturally utilizes one enantiomer, while the mirror image can cause adverse side effects.
Kagan developed reactions that significantly increase the yield of one specific enantiomer, a feat previously thought impossible. Soai, on the other hand, pioneered a reaction that exclusively produces a single enantiomer. The committee described Soai's 2003 experiment, where one enantiomer began to self-replicate and eventually dominated the solution to 99.99%, as one of the most spectacular chemical experiments ever conducted, marking the first time chirality was established in a system previously containing both forms. Scientists are now exploring whether nature's preference for specific molecular forms arose through similar mechanisms.
Kagan, of French-Jewish descent, had previously won the prestigious Israeli Wolf Prize in 2001 for related research. At the time, some French media expressed national disappointment that he had not received a Nobel Prize, questioning the selection process. Now, at 95, Kagan's Nobel recognition restores his honor. Soai has visited Israel's Weizmann Institute of Science and is known to have close personal and scientific ties with its researchers Meir Lahav and Leslie Leiserowitz, who also received Wolf Prizes for their work in related fields.