73709-20-3Relevant academic research and scientific papers
Ultrasound-assisted synthesis of substituted guanidines using 1H-pyrazole-1-carboxamidine and S-methylisothiouronium sulfate under solvent-free conditions
Fujita, Mitsue,Furusho, Yoshio
, p. 4339 - 4342 (2018/07/06)
We have investigated ultrasound-assisted synthesis of guanidine derivatives using 1H-Pyrazole-1-carboxamidine (PyzCA) and S-substituted isothiouronium sulfate (MeITU). The guanylations of several amines are promoted by ultrasound sonication under solvent-free conditions, and proceed under mild conditions. It is of particular interest that the guanylations do not require bases in most cases.
Cleavage of 2-(Arylamino)-4,6-dimethoxypyrimidines to yield arylguanidines
Shaw, Julian W.,Grayson, David H.,Rozas, Isabel
, p. 3565 - 3569 (2014/06/23)
A novel method for the synthesis of aryl-substituted guanidines in good overall yields is presented; it consists of the acidic cleavage of 2-(arylamino)-4,6-dimethoxypyrimidines, which were prepared by coupling aryl bromides with 2-amino-4,6-dimethoxypyrimidine. This methodology introduces a new means of protection for the guanidine functionality. Copyright
Upper rim guanidinocalix[4]arenes as artificial phosphodiesterases
Baldini, Laura,Cacciapaglia, Roberta,Casnati, Alessandro,Mandolini, Luigi,Salvio, Riccardo,Sansone, Francesco,Ungaro, Rocco
experimental part, p. 3381 - 3389 (2012/06/04)
Calix[4]arene derivatives, blocked in the cone conformation and functionalized with two to four guanidinium units at the upper rim were synthesized and investigated as catalysts in the cleavage of the RNA model compound 2-hydroxypropyl p-nitrophenyl phosp
Chlorotrimethylsilane activation of acylcyanamides for the synthesis of mono-N-acylguanidines
Looper, Ryan E.,Haussener, Travis J.,MacK, James B. C.
supporting information; experimental part, p. 6967 - 6971 (2011/10/04)
A simple and efficient one-pot method for the synthesis of monoprotected guanidines is presented. Treatment of an acylcyanamide with chlorotrimethylsilane generates a reactive N-silylcarbodiimide capable of guanylating a variety of amines. Typically the reaction is complete in 15 min for primary and secondary aliphatic amines at rt. Hindered amines and anilines are also competent nucleophiles but require extended reaction times.
Guanidine and 2-aminoimidazoline aromatic derivatives as α2-adrenoceptor antagonists, 1: Toward new antidepressants with heteroatomic linkers
Rodriguez, Fernando,Rozas, Isabel,Ortega, Jorge E.,Meana, J. Javier,Callado, Luis F.
, p. 4516 - 4527 (2008/03/12)
The efficient preparation and pharmacological characterization of different families of (bis)guanidine and (bis)2-aminoimidazoline derivatives ("twin" and "half" molecules) as potential α2-adrenoceptor antagonists for the treatment of depressio
New cellulose-supported reagent: A sustainable approach to guanidines
Porcheddu, Andrea,Giacomelli, Giampaolo,Chighine, Alessandra,Masala, Simonetta
, p. 4925 - 4927 (2007/10/03)
(Chemical Equation Presented) A new cellulose-supported reagent for the synthesis of guanidine in aqueous medium is reported starting from commercially available functionalized cellulose beads. Primary and secondary amines, anilines, and amino acids were transformed to the corresponding guanidines in high yields and under very mild conditions.
Aminopyrimidine and aminopyridine anti-inflammation agents
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, (2008/06/13)
Aminopyrimidine and aminopyridine (I) compounds, compositions and methods useful in the treatment of inflammatory, metabolic or malignant conditions, are provided herein.
Total deprotection of N,N'-bis(tert-butoxycarbonyl)guanidines using SnCl4
Miel, Hugues,Rault, Sylvain
, p. 7865 - 7866 (2007/10/03)
The total deprotection of NdV'-bis-Boc guanidines using SnCl4 proceeds smoothly in ethyl acetate at room temperature and leads to the easily isolable corresponding guanidinium chlorides.
