Abbreviations: 4CL, hydroxycinnamate (or 4-coumaric acid) coenzyme A ligase; C4H, cinnamic acid 4-hydroxylase; HPPR, hydroxyphenylpyruvate reductase; PAL, phenylalanine ammonia-lyase; RAS, rosmarinic acid synthase; TAT, tyrosine aminotransferase. Another derivatives of phenyl propanoids are coumarins ...
This compound is obtained by reacting isocyanates of formula II [e.g. (S)-(+)-1-(1-naphthyl)ethyl isocyanate] with an α-ketocarboxylic acid derivative of formula III (R7 is H or lower alkyl) (e.g. ethyl 4-methylphenylpyruvate) in the presence of a base (e.g. triethylamine) ...