Methionine isopropyl ester

In a similar manner there occurs the formation of 7-glutamyl peptides by sheep kidney extracts from glutathione and free amino acids. The activity of esters as substrates is shown by methionine isopropyl ester condensing to form methionylmethionine and methionylmethionylmethionine catalyzed by trypsin or by chymotrypsin. A similar condensation has been noted for threonine isopropyl ester. ... 

The above stereospecific tiirane polymerisations have generally been run in heterogeneous systems. Such conditions essentially make it impossible to determine the detailed structure of active species involved in these polymerisations. Thus, enantiosymmetric and enantioasymmetric polymerisations of propylene sulphide have also been studied in a homogeneous phase by using chiral cadmium thiolates of cysteine esters and chiral cadmium carboxylates of cysteine and methionine [157,160-164]. The most studied is living polymerisation using the cadmium derivative of the isopropyl ester of (.S)-cysteine [160] ... 

Pancreatic enzyme hydrolyzes L-methionine esters selectively.—E DL-methionine isopropylate with pancreatic enzyme in water allowed to stand at room temp, for 2 days, with initial stirring, and worked up via... 

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