Main Reaction: Theobromine >> Caffeine

Reference: PubMed ID: 238504
Authors: Suzuki T, Takahashi E
Title: Biosynthesis of caffeine by tea-leaf extracts. Enzymic formation of theobromine from 7-methylxanthine and of caffeine from theobromine.
Published: 1975 Jan

Theobromine --> Caffeine