1194-22-5Relevant articles and documents
An efficient and convenient synthesis of 4,6-Dichloro-2-methyl-5- nitropyrimidine
Zhou, Shuwen,Xu, Defeng,Wang, Ziqiao,Zhu, Zhiling,Zha, Zhenyu,Fan, Yu,Su, Hongkui
, p. 3559 - 3561 (2014)
A convenient synthesis of 4, 6-dihydro-2-methyl-pyrimidine can be obtained by cyclization reaction of acetamidine hydrochloride and diethyl malonate in the presence of sodium methoxide for a 91.2 % yield. 4, 6-Dihydro-2-methyl-5- nitropyrimidine can be achieved by nitration under the mixed acids of nitric acid, trichloroacetic acid and acetic acid in an 88.3 % yield and then the chlorination using phosphorus oxytrichloride can afford 4, 6-dichloro-2-methyl- 5-nitropyrimidine with an 82.6 % yield.
Phenyl and Diaryl Ureas with Thiazolo[5,4-d]pyrimidine Scaffold as Angiogenesis Inhibitors: Design, Synthesis and Biological Evaluation
Xue, Wen-Jun,Deng, Ya-Hui,Yan, Zhong-Hui,Liu, Ji-Ping,Liu, Yu,Sun, Li-Ping
, (2019/04/03)
Angiogenesis is crucial for tumor growth and inhibition of angiogenesis has been regarded as a promising approach for cancer therapy. Vascular endothelial growth factor receptor-2 (VEGFR-2) is an important factor in angiogenesis. In this work, a novel series of thiazolo[5,4-d]pyrimidine derivatives inhibiting angiogenesis were rationally designed and synthesized. Their inhibitory activities against human umbilical vein endothelial cells (HUVEC) were investigated in vitro. 1-(4-Fluorophenyl)-3-{4-[(5-methyl-2-phenyl[1,3]thiazolo[5,4-d]pyrimidin-7-yl)amino]phenyl}urea (19b) and 1-(3-Fluorophenyl)-3-{4-[(5-methyl-2-phenyl[1,3]thiazolo[5,4-d]pyrimidin-7-yl)amino]phenyl}urea (19g) exhibited the most potent inhibitory effect on HUVEC proliferation (IC50=12.8 and 5.3 μm, respectively). Compound 19g could inhibit the migration of human umbilical vein endothelial cells. These results support the further investigation of these compounds as potent anticancer agents.
A convenient synthesis of 5-arylamino-4H-pyran-4-ones using palladium-catalyzed amination
Farard, Julien,Logé, Cédric,Pfeiffer, Bruno,Lesur, Brigitte,Duflos, Muriel
scheme or table, p. 5729 - 5732 (2009/12/09)
A concise approach to 5-arylamino-4H-pyran-4-ones is described via palladium-catalyzed amination reaction. The methodology involved in this Letter is based on protection/deprotection protocols and on manipulation of the 5-hydroxy group of readily available kojic acid. It would provide a new entry to a range of 5-arylamino-4H-pyran-4-ones via Buchwald-Hartwig-type amination reaction on 4H-pyran-4-one unit.