Guanidine and 2-Aminoimidazoline Aromatic Derivatives as α<sub>2</sub>-Adrenoceptor Antagonists, 1: Toward New Antidepressants with Heteroatomic Linkers
作者:Fernando Rodriguez、Isabel Rozas、Jorge E. Ortega、J. Javier Meana、Luis F. Callado
DOI:10.1021/jm070229q
日期:2007.9.1
The efficient preparation and pharmacological characterization of different families of (bis)guanidine and (bis)2-aminoimidazoline derivatives ("twin" and "half" molecules) as potential alpha(2)-adrenoceptor antagonists for the treatment of depression is presented. The affinity toward the alpha(2)-adrenoceptor of all the compounds prepared was measured in vitro in human brain tissue. Additionally,
Synthesis of guanidines via the I2 mediated desulfurization of N,N′-di-Boc-thiourea
作者:Hao-Jie Rong、Cui-Feng Yang、Tao Chen、Yong-Qiang Wang、Bin-Ke Ning
DOI:10.1016/j.tetlet.2019.150970
日期:2019.8
The I2 mediated desulfurization of N,N′-di-Boc-thiourea was developed. Various primary amines, including sterically and electronically deactivated primary amines, were transformed into the corresponding bis-Boc protected guanidines under mild conditions.
Iodine-catalyzed guanylation of amines with<i>N</i>,<i>N</i>′-di-Boc-thiourea
作者:Hao-Jie Rong、Cui-Feng Yang、Tao Chen、Ze-Gang Xu、Tian-Duo Su、Yong-Qiang Wang、Bin-Ke Ning
DOI:10.1039/c9ob02014d
日期:——
Herein, we report that iodine-catalyzed guanylation of primary amines can be accomplished with N,N'-di-Boc-thiourea and TBHP to afford the corresponding guanidines in 40-99% yields. Oxidation of the HI byproduct by TBHP eliminates the need for an extra base to prevent the protonation of substrates and makes the reaction especially useful for both electronically and sterically deactivated primary anilines
A Convenient Preparation of Monosubstituted<i>N</i>,<i>N</i>′-di(Boc)-Protected Guanidines
作者:Brian Drake、Marcel Patek、Michal Lebl
DOI:10.1055/s-1994-25527
日期:——
1-H-Pyrazole-1-[N,N′-bis(tert-butoxycarbonyl)] carboxamidine (1) reacts under mild conditions with a number of amines and amino acids to give the respective protected guanidines in moderate to high isolated yields.