Replacement of the furanosyl oxygen with a methylene unit in the ribose sugar in
nucleosides 1 and nucleotides 2 prompted the rise of a new nucleoside class with very …

An enzyme was found which catalyzes the deamination of l-tyrosine, giving equimolar
amounts of trans-p-coumaric acid and ammonia as the products. This enzyme (tyrase) was …

This paper demonstrates how lm-tyrosine 1 can be synthesized on larger-scale via enzyme-
catalyzed kinetic resolution of N-acyl m-tyrosine methyl ester 4. N-Acyl m-tyrosine methyl …

Solvent-induced chirality switching in reciprocal optical resolution between mandelic acid
(1) and erythro-2-amino-1, 2-diphenylethanol (2) has been demonstrated. The …

Wheat shoot acetone powders contain ammonia-lyases which catalyse the conversion of a
number of ring-substituted phenylalanines to the corresponding cinnamic acids. The …

In experiments with C14-labelled compounds, shikimic acid, phenylalanine, phenyllactic
acid, and metatyrosine were found to be precursors of the terphenylquinone pigment …

The first synthesis of N-acetyl-α-amino acids by radical addition on solid support to
commercialy available 2-acetamidoacrylic acid using the mercury method is described The …

2-Methyl-4-(3'-acetoxybenzal)-5-oxazolone was hydrolyzed to yield m-hydroxyphenylpyruvic
acid, which was reduced to m-hydroxyphenyllactic acid. m-Hydroxyphenyllactic acid ivas …

L-Tyrosine carboxy-lyase (EC 4. 1. 1. 25) was extracted from the roots of barley seedlings
and purified approximately 25 fold. Optimum pH for the enzyme activity was found to be 7.3 …

BACKGROUND: The biosynthesis of structurally complex isoquinoline alkaloids and other
natural products occurs via aromatic amino acids such as tyrosine, and chiral and rigid …