Luis Leloir


Luis F. Leloir

Photo from the Nobel Foundation archive.

Luis F. Leloir
The Nobel Prize in Chemistry 1970

Born: 6 September 1906, Paris, France

Died: 2 December 1987, Buenos Aires, Argentina

Affiliation at the time of the award: Institute for Biochemical Research, Buenos Aires, Argentina

Prize motivation: “for his discovery of sugar nucleotides and their role in the biosynthesis of carbohydrates”

Prize share: 1/1


Carbohydrates, including sugars and starches, are of paramount importance to the life processes of organisms. Luis Leloir demonstrated that nucleotides—molecules that also constitute the building blocks of DNA molecules—are crucial when carbohydrates are generated and converted. In 1949 Leloir discovered that one type of sugar’s conversion to another depends on a molecule that consists of a nucleotide and a type of sugar. He later showed that the generation of carbohydrates is not an inversion of metabolism, as had been assumed previously, but processes with other steps.

To cite this section
MLA style: Luis Leloir – Facts. Nobel Prize Outreach AB 2023. Fri. 8 Dec 2023. <>

Back to top Back To Top Takes users back to the top of the page

Streams during Nobel Week

Watch the 2023 Nobel Prize lectures, the Nobel Prize Concert, Nobel Week Dialogue, the prize award ceremonies in Oslo and Stockholm and Nobel Peace Prize Forum here at
Watch lectures and award ceremonies

Explore prizes and laureates

Look for popular awards and laureates in different fields, and discover the history of the Nobel Prize.