来自咪唑啉-2-硫醇衍生物,不饱和或卤代酸和酯的2,3,5,6-四氢-和5,6-二氢-咪唑并[ 2,1- b ]噻唑
摘要:
证据表明,咪唑啉-2-硫醇与乙炔二羧酸及其二甲基酯的反应产物是5,6-二氢咪唑并[ 2,1- b ]噻唑-3(2 H)-one的衍生物。该咪唑啉-2-硫醇与马来酸酐,α-溴-二羧酸及其二乙酯的反应可制得该环系的其他衍生物。用2-咪唑啉-2-巯基的2-氯乙酰乙酸乙酯和4-溴乙酰乙酸乙酯得到5,6-二氢咪唑并[2,1- b ]噻唑的衍生物,并保留了乙氧基羰基。5-取代的2-硫代乙内酰脲以相似的方式反应。
SYNTHESIS OF IMIDAZOLE 2-THIONES VIA THIOHYDANTOINS
申请人:Garst E. Michael
公开号:US20070203344A1
公开(公告)日:2007-08-30
The present invention provides a method of making an imidazole 2-thione which comprises the step(s) of reducing a thiohydantoin to said imidazole-2-thione.
本发明提供了一种制备咪唑-2-硫酮的方法,其包括将硫代异噁唑酮还原为所述的咪唑-2-硫酮的步骤。
Thiazole derivatives
申请人:HOECHST UK LIMITED
公开号:EP0102026A2
公开(公告)日:1984-03-07
New thiazole derivatives of the general formula I
and their salts with physiologically acceptable acids are described as well as a process for their manufacture. The new compounds exhibit histamine H-2 antagonist activity and may thus be used to inhibit gastric acid secretion and to treat gastric and peptic ulcers.
描述了通式 I 的新噻唑衍生物及其与生理上可接受的酸的盐类,以及它们的制造工艺。
的新噻唑衍生物及其与生理上可接受的酸的盐类,以及它们的制造工艺。这些新化合物具有组胺 H-2 拮抗剂活性,因此可用于抑制胃酸分泌,治疗胃溃疡和消化性溃疡。
Crystal Structure of 2-Thiohydantoin-L-Isoleucine Synthesized under Solvent-Free Conditions
作者:Gerzon E. Delgado、Luis E. Seijas、Asiloé J. Mora、Rafael Almeida、Teresa González
DOI:10.1080/15421406.2014.928433
日期:2015.1.22
The title compound with systematic name: (S)-5-secbutyl-2-thiohydantoin, is synthesized through a solvent-free reaction, crystallizes in the non-centrosymmetric space group P2(1)2(1)2(1). In the crystal structure, the molecules are joined by N-H center dot center dot center dot O and N-H center dot center dot center dot S hydrogen bonds, forming chains C-2(2)(10) and macrocycles R-6(5)(26) in an infinite bi-dimensional network.
Nouveau système enzymatique, son procédé de préparation et son application notamment dans la préparation de la D-parahydroxyphénylglycine
申请人:SOCIETE FRANCAISE HOECHST
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