Henri Kagan and Kensō Soai win 2026 Nobel Prize for solving chemical asymmetry
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Science & Technology: Understanding enantiomers and homochirality for safer pharmaceutical manufacturing.
Why in news
Henri Kagan and Kensō Soai were awarded the 2026 Nobel Prize in Chemistry for solving nature’s chemical asymmetry, enabling the production of pharmaceuticals without harmful side effects.
Background
The Nobel Committee highlighted that chiral molecules have mirror-image forms (enantiomers) where only one typically fits biological 'locks.' Henri Kagan discovered the 'nonlinear effect' in the 1980s, and Kensō Soai achieved near-absolute purity of one enantiomer by 2003.
Facts for Prelims
- S&THomochirality: The phenomenon where living organisms contain almost exclusively one of the two forms of chiral molecules.
- S&TEnantiomers: Mirror-image forms of chiral molecules that have similar physical properties but different biological behaviors.
- S&TNonlinear effect: A chemical phenomenon discovered by Henri Kagan in the 1980s related to chemical asymmetry.
- S&TChiral catalyst: A substance used by Willy Marckwald to produce a greater amount of one enantiomer variant.
Prelims practice question
Which chemical phenomenon, discovered by Henri Kagan in the 1980s, is related to chemical asymmetry?
- (a)Linear catalysis
- (b)Isotopic shift
- (c)Molecular symmetry
- (d)Nonlinear effect
Show answer
Answer: (d) Nonlinear effect — The note states that Henri Kagan discovered the nonlinear effect in the 1980s related to chemical asymmetry.
For Mains
Q. Discuss how the mastery of chemical asymmetry and homochirality enhances the safety and efficacy of pharmaceutical manufacturing.
Dimensions to cover in your answer
- Pharmacological safety: Preventing adverse side effects caused by non-therapeutic enantiomers in drug synthesis.
- Synthetic precision: Overcoming the limitation of early experiments that yielded equal amounts of chiral variants.
- Biomimetic chemistry: Replicating nature's spontaneous homochirality to design controlled chemical reactions.
Keywords: Homochirality · Enantiomers · Chemical Asymmetry · Pharmaceutical Manufacturing · Catalysis
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