General approaches involve the nucleophilic cycloalkylation, carbenoids addition of certain amino acid derivatives and derivatization from simple cyclopropane compounds.
The amino-acid imidazoline amphoteric surfactant was prepared from dichloroethane and vegetable-oil fatty acid as raw materials by aminolysis, esterffication and hydroxymethylation.
Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.
Conclusions:Short-chain fatty acids can improve mucosal morphology,preserve enterocyte ultrastructure,and enhance amino acid absorption of isograft after small bowel transplantation in rat.
The application of transketolase for industrial purpose, such as production of ethanol, biosynthesis of aromatic amino acids and enantiotopic chemicals were reviewed.
Nutritional intervention of taurine and other micronut rients may modulate the visual signal transmission or vision function mediated b y the some amnio-transmitters.
Applied during hemodialysis, the effect rate were 8.3%, 71.4%, 68.2% respectively in midodrine hydrochloride tablet group compound amino acid group, 50% glucose group.
To provide proof of grafting, modified hydrolysate was identified by indanthrone, the IR and amino acid composition analysis of hydrolysate and modified hydrolysate were studied.