157979-82-3Relevant academic research and scientific papers
Copper-catalyzed transformation of ketones to amides: Via C(CO)-C(alkyl) bond cleavage directed by picolinamide
Ma, Haojie,Zhou, Xiaoqiang,Zhan, Zhenzhen,Wei, Daidong,Shi, Chong,Liu, Xingxing,Huang, Guosheng
, p. 7365 - 7368 (2017)
Copper catalyzed chemoselective cleavage of the C(CO)-C(alkyl) bond leading to C-N bond formation with chelation assistance of N-containing directing groups is described. Inexpensive Cu(ii)-acetate serves as a convenient catalyst for this transformation. This method highlights the emerging strategy to transform unactivated alkyl ketones into amides in organic synthesis and provides a new strategy for C-C bond cleavage.
Discovery of potent cyclic GMP phosphodiesterase inhibitors. 2-Pyridyl- and 2-imidazolylquinazolines possessing cyclic GMP phosphodiesterase and thromboxane synthesis inhibitory activities
Lee,Konishi,Yu,Miskowski,Riviello,Macina,Frierson,Kondo,Sugitani,Sircar,Blazejewski
, p. 3547 - 3557 (2007/10/03)
Moderate cyclic GMP phosphodiesterase (cGMP-PDE, PDE V) inhibitor 2- phenyl-4-anilino-quinazoline (1) was identified utilizing MultiCASE assisted drug design (MCADD) technology. Modification of compound 1 was conducted at the 2-, 4-, and 6-positions of the quinazoline ring for enhancement of cGMP- PDE inhibitory activity. The 6-substituted 2-(imidazol-1-yl)-quinazolines are 1000 times more potent in in vitro PDE V enzyme assay than the well-known inhibitor zaprinast. The 6-substituted derivatives of 2-(3- pyridyl)quinazoline 84 and 2-(imidazol-1-yl)quinazoline 86 exhibited more than 1000-fold selectivity for PDE V over the other four PDE isozymes. In addition, cGMP-PDE inhibitors 64, 65, and 73 were found to have an additional property of thromboxane synthesis inhibitory activity.
