Wiktionary
prephenic acid
n. (context biochemistry English) An intermediate in the biosynthesis of the amino acids phenylalanine and tyrosine
Wikipedia
Prephenic acid
Prephenic acid, commonly also known by its anionic form prephenate, is an intermediate in the biosynthesis of the aromatic amino acids phenylalanine and tyrosine.
It is synthesized by a [3,3]- sigmatropic Claisen rearrangement of chorismate.