2-ethyl-6-(4-nitrophenyl)imidazo[2,1-b][1,3,4]thiadiazole-5-carbaldehyde

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 2-ethyl-6-(4-nitrophenyl)imidazo[2,1-b][1,3,4]thiadiazole-5-carbaldehyde
• 化学式: C₁₃H₁₀N₄O₃S
• 分子量: 302.313
• InChiKey: VNCAAJDZMUXEOX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  21
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.15
• 拓扑面积：
  121
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  2-ethyl-6-(4-nitrophenyl)imidazo[2,1-b][1,3,4]thiadiazole-5-carbaldehyde 在 sodium acetate 、 溶剂黄146 作用下， 反应 1.0h， 生成 2-{[6-(4-bromophenyl)-2-ethylimidazo[2,1-b][1,3,4]thiadiazol-5-ylmethylene]hydrazono}-5-methylthiazolidin-4-one
  参考文献：
  名称：

  噻唑烷酮/噻唑基杂化物–新型抗锥虫药

  摘要：

  已经研究了各种化合物作为治疗锥虫病的有效药物，但是在过去的30年中，没有新的药物上市。4-噻唑烷酮/噻唑作为优先结构和硫代氨基脲环类似物是新型抗锥虫药物设计中众所周知的支架。我们在这里介绍新的杂合分子的设计和合成，这些杂合分子带有由zo基与各种分子片段连接的噻唑烷酮/噻唑核。结构优化导致具有苯基吲哚或苯基咪唑并[2,1- b ] [1,3,4]噻二唑部分的化合物对布鲁氏锥虫和冈比亚锥虫具有优异的抗锥虫活性。生物学研究允许鉴定出亚微摩尔水平的IC 50，良好的选择性指数，对人原代成纤维细胞的相对较低的细胞毒性以及较低的急性毒性的化合物。

  DOI：

  10.1016/j.ejmech.2019.04.052
• 作为产物：
  描述：

  2-溴-4'-硝基苯乙酮 在 三氯氧磷 作用下， 反应 12.67h， 生成 2-ethyl-6-(4-nitrophenyl)imidazo[2,1-b][1,3,4]thiadiazole-5-carbaldehyde
  参考文献：
  名称：

  噻唑烷酮/噻唑基杂化物–新型抗锥虫药

  摘要：

  已经研究了各种化合物作为治疗锥虫病的有效药物，但是在过去的30年中，没有新的药物上市。4-噻唑烷酮/噻唑作为优先结构和硫代氨基脲环类似物是新型抗锥虫药物设计中众所周知的支架。我们在这里介绍新的杂合分子的设计和合成，这些杂合分子带有由zo基与各种分子片段连接的噻唑烷酮/噻唑核。结构优化导致具有苯基吲哚或苯基咪唑并[2,1- b ] [1,3,4]噻二唑部分的化合物对布鲁氏锥虫和冈比亚锥虫具有优异的抗锥虫活性。生物学研究允许鉴定出亚微摩尔水平的IC 50，良好的选择性指数，对人原代成纤维细胞的相对较低的细胞毒性以及较低的急性毒性的化合物。

  DOI：

  10.1016/j.ejmech.2019.04.052

文献信息

• Neonatal estrogenic exposure suppresses PTEN-related endometrial carcinogenesis in recombinant mice
  作者：Monjura Begum、Hironori Tashiro、Hidetaka Katabuchi、Akira Suzuki、Robert J Kurman、Hitoshi Okamura

  DOI：10.1038/labinvest.3700380

  日期：2006.3

  Human endometrial carcinomas, as well as complex atypical hyperplasias (CAH), are estrogen related and frequently have mutations in the PTEN gene. However, the mutual contribution of estrogen and PTEN mutations to endometrial carcinogenesis in vivo is unknown. To address this issue, we investigated whether neonatal estrogenic treatments augment the incidence of CAH and carcinomas in murine PTEN (mPTEN) heterozygous (+/-) mutant mice, an animal model for endometrial carcinoma. Low doses of diethylstilbestrol (1 ng/g/day), genistein (50 mu g/g/day) in phytoestrogens, estriol (E-3) (4 mu g/g/day), and vehicle (ethanol and corn oil) were administered subcutaneously daily to neonatal pups from the 1st to 5th day after birth. At 52 weeks of age, the morphological changes in the endometrium, and uterine expression of Hoxa 10 and Hoxa 11, were evaluated. These Hoxa genes are abdominal B-type homeobox genes, which normally regulate differentiation of the Mullerian duct. The incidence of CAH and adenocarcinomas of the endometrium was significantly decreased by the neonatal estrogenic treatments in the mPTEN+/- mice. Coincidentally, all treatments significantly decreased the stromal cell density, and CAH and adenocarcinomas rarely developed in the epithelium adjacent to the affected endometrial stroma. Moreover, the uterine expression of Hoxa 10 in mice with neonatal genistein and E3 treatments, and that of Hoxa 11 in mice with all treatments, was significantly lower when compared with vehicle alone. Taken together, neonatal estrogenic exposure induced stromal atrophy and/or hyalinization accompanied by repressed expression of Hoxa 10 and Hoxa 11, and exerted an inhibitory effect on PTEN-related tumorigenesis. These findings provide new insight into the interaction between endometrial epithelium and stroma in endometrial carcinogenesis in vivo.