How was Alexander R. Todd awarded the Noble Prize?

Name: Alexander R. Todd. 
Country: British.
Date of Birth: October 2, 1907.
Date of Death: January 10, 1997.
The subject of Study: Coenzyme, Nucleoside, Nucleotide.
Noble Prize Year: Nobel Prize for Chemistry in 1957 for research on the structure and synthesis of nucleotides, nucleosides, and nucleotide coenzymes gained.