19810-58-3Relevant academic research and scientific papers
Controlling Keto-Enol Tautomerism of Ureidopyrimidinone to Generate a Single-Quadruple AADD-DDAA Dimeric Array
Ding, Qinwen,Dong, Zeyuan,Fan, Zengming,Mao, Shizhong,Qi, Shuaiwei,Zhang, Chenyang,Zhang, Jing
, p. 7305 - 7309 (2020)
Units of ureidopyrimidinone (UPy) which dimerize via strong quadruple hydrogen bonding are widely used for the construction of supramolecular systems. This self-complementary system exists in the tautomerism equilibrium of 4[1H]-pyrimidinone dimer and pyrimidin-4-ol dimer, making generated supramolecular assembly systems essentially complicated. In this contribution, a rational but simple design concept is described for preorganizing the self-complementary quadruple hydrogen bonding of UPy via supramolecular strategy into a single-quadruple DDAA-AADD dimeric array. With this concept, the designed UPy derivatives form only 4[1H]-pyrimidinone dimer with a ketone configuration via intermolecular hydrogen-bonding interactions, both in the solid state as well as in solution, as is evident from single-crystal X-ray diffraction and 1H NMR spectroscopy. The single DDAA-AADD dimeric array provides defined noncovalent driving forces that can be used to generate constitutionally clear supramolecular structures that are vitally important in the fields of supramolecular chemistry and materials.
CHEMICAL COMPOUNDS
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Page/Page column 123, (2010/11/04)
The invention is directed to to substituted indazole derivatives. Specifically, the invention is directed to compounds according to Formula I: wherein R1 - R6 and X are defined herein. The compounds of the invention are inhibitors of PDK1 and can be useful in the treatment of disorders characterized by constitutively activated ACG kinases such as cancer and more specifically leukemia and cancers of the breast, colon, and lung. Accordingly, the invention is further directed to pharmaceutical compositions comprising a compound of the invention. The invention is still further directed to methods of inhibiting PDK1 activity and treatment of disorders associated therewith using a compound of the invention or a pharmaceutical composition comprising a compound of the invention.
2 -AMINO-PYRIMIDINE DERIVATIVES AS HISTAMINE H4 ANTAGONISTS
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Page/Page column 58, (2009/07/03)
2-Aminopyrimidine derivatives of formula (I), wherein the meaning of the different substituents are those indicated in the description. These compounds are useful as histamine H4 receptor antagonists.
