How was Luis F. Leloir awarded the Noble Prize?

Name: Luis F. Leloir.
Country: Argentine.
Date of Birth: 6 September 1906.
Date of Death: 2 December 1987.
The subject of Study: Carbohydrate.
Noble Prize Year: Nobel Prize for Chemistry in 1970 for their investigations of the processes by which carbohydrates are converted into energy in the body.