Ring-ring interconversions. Part 2. Effect of the substituent on the rearrangement of 6-aryl-3-methyl-5-nitrosoimidazo[2,1-b][1,3]thiazoles into 8-aryl-8-hydroxy-5-methyl-8H-[1,4]thiazino[3,4-c][1,2,4]oxadiazol-3-ones. A novel class of potential antitumor agents
摘要:
The reaction of several 6-aryl-3-methyl-5-nitrosoimidazo[2,1-b][1,3]thiazoles with hydrochloric acid by refluxing in ethanol gives new 8-aryl-8-hydroxy-5-methyl-8H-[1,4]thiazino[3,4-c] [1,2,4]oxadiazol-3-ones for testing of their biological activity. By carrying out the reaction at room temperature it has been possible to isolate reaction intermediates to which structures have been assigned. This study has provided information on the reaction mechanism and on the effect of the substituent in the phenyl ring on the yield of the reaction. (C) 1999 Elsevier Science Ltd. All rights reserved.
Cyclization of 2-amino-4-methyl-3-[2-aryl(hetaryl)-2-oxoethyl]-thiazolium bromides in aqueous medium. A simple synthesis of substituted imidazo[2,1-b]thiazoles
<sup>1</sup>
H and <sup>13</sup>
C assignments of three series bioactive imidazo[2,1-<i>b</i>
]thiazole derivatives
作者:Alexander S. Bunev、Elena V. Sukhonosova、Gennady I. Ostapenko、Andzhela P. Pavlova、Alexander S. Peregudov
DOI:10.1002/mrc.4115
日期:2014.11
systematic studies on their NMR properties have been published. Therefore, 13 compounds with typical substitute group from these three series were selected to carry out a detailed NMR investigation using 1D and 2D NMR experiments including H NMR, C NMR, HMQC and HMBC. Here, we present the detailed H and C NMRassignments of these compounds and further analyze and compare the NMR data of these compounds
[EN] IMIDAZOTHIAZOLE COMPOUNDS AND METHODS FOR TREATING PLANT NEMATODE INFECTIONS<br/>[FR] COMPOSÉS ET PROCÉDÉS D'IMIDAZOTHIAZOLE POUR LE TRAITEMENT D'INFECTIONS PROVOQUÉES PAR DES NÉMATODES CHEZ UNE PLANTE
申请人:GOVERNING COUNCIL UNIV TORONTO
公开号:WO2021003571A1
公开(公告)日:2021-01-14
The present application relates to the treatment of nematode infections in a plant. For example, the application relates to the use of one or more compounds of Formula (I) as defined herein, or compositions comprising these compounds, for treatment of a nematode infection or a disease, disorder or condition arising from a nematode infection in a plant. (Formula I)
Asymmetric Mannich reactions of imidazo[2,1-b]thiazole-derived nucleophiles with (SS)-N-tert-butanesulfinyl (3,3,3)-trifluoroacetaldimine
作者:Haibo Mei、Chen Xie、Lingmin Wu、Vadim A. Soloshonok、Jianlin Han、Yi Pan
DOI:10.1039/c3ob41785a
日期:——
reasonably good yields (55%–79%) and exceptionally high stereoselectivity (>99 : 1 dr). This method presents a general approach for the preparation of a new type of biologically relevant compounds containing pharmacophoric imidazo[2,1-b]thiazole and (trifluoro)ethylamine groups.
咪唑并[2,1-的不对称曼尼希反应b ]噻唑衍生的亲核试剂与(S小号) - N-叔-butanesulfinyl(3,3,3-)-trifluoroacetaldimine发现具有相当好的产率继续进行(55%-79% )和极高的立体选择性(> 99:1 dr)。该方法为制备含有药效基咪唑并[2,1- b ]噻唑和(三氟)乙胺基团的新型生物相关化合物提供了一种通用方法。
Pyl,T. et al., Justus Liebigs Annalen der Chemie, 1961, vol. 643, p. 153 - 160
作者:Pyl,T. et al.
DOI:——
日期:——
Cyclization of 2-amino-4-methyl-3-[2-aryl(hetaryl)-2-oxoethyl]-thiazolium bromides in aqueous medium. A simple synthesis of substituted imidazo[2,1-b]thiazoles
作者:E. V. Sukhonosova、V. E. Statsyuk、G. I. Ostapenko、A. S. Bunev