Chromatography‐Free Multicomponent Synthesis of Thioureas Enabled by Aqueous Solution of Elemental Sulfur
作者:András Gy. Németh、Renáta Szabó、Attila Domján、György M. Keserű、Péter Ábrányi‐Balogh
DOI:10.1002/open.202000250
日期:2021.1
The development of a new three‐component chromatography‐free reaction of isocyanides, amines and elemental sulfur allowed us the straightforward synthesis of thioureas in water. Considering a large pool of organic and inorganic bases, we first optimized the preparation of aqueous polysulfide solution from elemental sulfur. Using polysulfide solution, we were able to omit the otherwise mandatory chromatography
Convenient Multicomponent One‐Pot Synthesis of 2‐Iminothiazolines and 2‐Aminothiazoles Using Elemental Sulfur Under Aqueous Conditions
作者:András Gy. Németh、Bence Marlok、Attila Domján、Qinghe Gao、Xinya Han、György M. Keserű、Péter Ábrányi‐Balogh
DOI:10.1002/ejoc.202100548
日期:2021.7.7
A multicomponent one-pot process led to the formation of diversely trisubstituted 2-iminothiazolines and disubstituted 2-aminothiazoles underaqueousconditions. Starting from isocyanides, amines, 2’-bromoacetophenones, and aqueous polysulfide solution or sulfurpowder, this efficient procedure enabled the chromatography-free separation of solid products.
Syntheses, in vitro urease inhibitory activities of urea and thiourea derivatives of tryptamine, their molecular docking and cytotoxic studies
作者:Kanwal、Majid Khan、Arshia、Khalid Mohammed Khan、Shahnaz Parveen、Muniza Shaikh、Narjis Fatima、M. Iqbal Choudhary
DOI:10.1016/j.bioorg.2018.10.070
日期:2019.3
and OCH3 substituents at aryl part were the most potent derivatives. Compound 14 (IC50 = 11.4 ± 0.4 μM) with a methyl substituent at ortho position was found to be the most active member of the series. Whereas, among halogen substituted derivatives, para substituted chloro compound 16 (IC50 = 13.7 ± 0.9 μM) showed good urease inhibitory activity. These synthetic derivatives were found to be non-cytotoxic