[EN] PROCESSES FOR PREPARATION OF (S)-TERT-BUTYL 4,5-DIAMINO-5-OXOPENTANOATE<br/>[FR] PROCÉDÉS DE PRÉPARATION DE (S)-TERT-BUTYL 4,5-DIAMINO-5-OXOPENTANOATE
申请人:CELGENE CORP
公开号:WO2019040109A1
公开(公告)日:2019-02-28
Provided are processes for the preparation of (S)-tert-butyl 4,5-diamino-5-oxopentanoate, or a salt, solvate, hydrate, enantiomer, mixture of enantiomers, or isotopologue thereof. Also provided are solid forms of various intermediates and products obtained from the processes.
A series of l-pyroglutamic acid analogues fromnaturalproduct lead were designed and synthesized, as well as their antifungal activities against Phytophthora infestans, neuritogenic activities, antibacterial activities and anti-inflammatory activities are described. The bioassays and SAR study showed that the majority of l-pyroglutamic acid esters have a significant antifungal activity against P.
N-acyliminium-ion induced intermolecular electrophilic aromatic substitution yielding nitrogen-substituted phenylglycine derivatives, whereas the benzylamide of glyoxylic acid-2-pyrrolidinone adduct undergoes intramolecular amidoalkylation to give an isoquinolone type compound. High stereospecifity and enantioselectivity was observed in intermolecular amidoalkylation of benzene using glyoxylic acid-S-pyroglutamic
The reaction of N-acylpyroglutamic acid with ammonia proceeds in two pathways. The one results in N-acylglutamine as a product, and the other in pyroglutamic acid and an amide formed from the N-acyl group. The ratio of the yields of the two reactions changes with the N-acyl group, being correlated with the acidity of the carboxylic acid from which the N-acyl group is derived, and also with the steric