54035-70-0Relevant articles and documents
Prodrug design for the potent cardiovascular agent Nω- hydroxy-l-arginine (NOHA): Synthetic approaches and physicochemical characterization
Schade, Dennis,Kotthaus, Juerke,Klein, Nikola,Kotthaus, Joscha,Clement, Bernd
, p. 5249 - 5259 (2011)
Nω-Hydroxy-l-arginine (NOHA) - the physiological nitric oxide precursor - is the intermediate of NO synthase (NOS) catalysis. Besides the important fact of releasing NO mainly at the NOS-side of action, NOHA also represents a potent inhibitor of arginases, making it an ideal therapeutic tool to treat cardiovascular diseases that are associated with endothelial dysfunction. Here, we describe an approach to impart NOHA drug-like properties, particularly by wrapping up the chemically and metabolically instable N-hydroxyguanidine moiety with different prodrug groups. We present synthetic routes that deliver several more or less highly substituted NOHA derivatives in excellent yields. Versatile prodrug strategies were realized, including novel concepts of bioactivation. Prodrug candidates were primarily investigated regarding their hydrolytic and oxidative stabilities. Within the scope of this work, we essentially present the first prodrug approaches for an interesting pharmacophoric moiety, i.e., N-hydroxyguanidine. The Royal Society of Chemistry 2011.
Synthesis of 2-Amino-5-Carboxamide Thiazole Derivatives via Dehydrative Cyclization of Thiourea Intermediate Resin on Solid Phase
Kim, Ye-Ji,Kwon, Hye-Jin,Han, Si-Yeon,Gong, Young-Dae
supporting information, p. 380 - 388 (2019/04/01)
In this study, we synthesized 2-amino-5-carboxamide thiazole derivatives on solid phase. The synthesis of the library starts with the reductive amination of the 4-formyl-3-methoxy phenoxy resin to prevent isomer formation. The dehydrative cyclization of thiourea intermediate resin, which is the key step in the synthetic process, was successfully synthesized using α-bromoketone in the presence of the DMF so as to afford 2-amino-5-carboxylate thiazole resin. The resulting resin is coupled with various amines. Finally, the 2-amino-5-carboxamide thiazole resin was cleaved from the polymer support using a TFA and DCM cocktail. The physicochemical properties of the proposed 2-amino-5-carboxamide thiazole derivatives were calculated and showed potential to be an reasonable oral bioavailability drug properties as determined by Lipinski's Rule.
A versatile one-pot synthesis of 1,3-substituted guanidines from carbamoyl isothiocyanates
Linton, Brian R.,Carr, Andrew J.,Orner, Brendan P.,Hamilton, Andrew D.
, p. 1566 - 1568 (2007/10/03)
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