The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: (S)-3-((S)-2-(((S)-1-Ethoxy-1-oxo-4-phenylbutan-2-yl)amino)propanoyl)-1-methyl-2-oxoimidazolidine-4-carboxylic acid hydrochloride(SMILESS: O=C([C@H](CN1C)N(C([C@@H](N[C@@H](CCC2=CC=CC=C2)C(OCC)=O)C)=O)C1=O)O.[H]Cl,cas:89396-94-1) is researched.Quality Control of 4-Hydroxyquinoline-2-carboxylic Acid. The article 《Serum substance P concentrations and silent aspiration in elderly patients with stroke》 in relation to this compound, is published in Neurology. Let’s take a look at the latest research on this compound (cas:89396-94-1).
Various doses of angiotensin-converting enzyme (ACE) inhibitors were administered to elderly patients with stroke to determine the effective concentration of serum substance P (SP) that correlates best with improvement of the silent aspiration in such patients. ACE inhibitors improved the silent aspiration in elderly patients with stroke via increasing the serum SP. Serum SP may be a useful marker for monitoring the control of silent aspiration in such patients and its optimal concentration was about 70 pg/mL. Results also suggest an important role of SP-containing nerves in the initiation of protective reflexes.
Different reactions of this compound((S)-3-((S)-2-(((S)-1-Ethoxy-1-oxo-4-phenylbutan-2-yl)amino)propanoyl)-1-methyl-2-oxoimidazolidine-4-carboxylic acid hydrochloride)Synthetic Route of C20H28ClN3O6 require different conditions, so the reaction conditions are very important.
Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”