967-42-0Relevant articles and documents
Exploration of polystyrene-supported 2-isobutoxy-1-isobutoxycarbonyl-1,2- dihydroquinoline (PS-IIDQ) as new coupling agent for the synthesis of 8-substituted xanthine derivatives
Bandyopadhyay, Prabal,Sathe, Manisha,Sharma, Pratibha,Kaushik
, p. 4631 - 4635 (2012/09/05)
Polystyrene-supported 2-isobutoxy-1-isobutoxycarbonyl-1,2-dihydroquinoline (PS-IIDQ), a polymer supported covalent coupling reagent, was successfully employed for the first time in the synthesis of 8-substituted xanthine derivatives. PS-IIDQ was observed
Synthesis, DNA binding and antiviral activity of new uracil, xanthine, and pteridine derivatives
El-Sabbagh, Osama I.,El-Sadek, Mohamed E.,El-Kalyoubi, Samar,Ismail, Ibrahim
, p. 26 - 31 (2008/01/27)
Some new 6-amino-1,3-dimethyl-5-(substituted methylidene)aminouracils were synthesized. Most of them were cyclized with triethyl orthoformate as a one-carbon source to afford 1,3-dimethyl-6-substituted pteridine derivatives. Certain uracils gave xanthine
Synthesis and in vitro bronchospasmolytic activity of 8-aryl, heteroaryl or arylalkyl theophyllines
Baziard-Mouysset, G.,Rached, A.,Younes, S.,Tournaire, C.,Stigliani, J. L.,et al.
, p. 253 - 260 (2007/10/02)
Twenty-four 8-aryl- or 8-heteroaryl-substituted theophyllines have been synthesized.The substituents are aromatic rings and heterocycles likely to induce an antiallergic effect or a spasmolytic activity.In vitro evaluation of the bronchospasm caused by ac
REACTIONS OF 5,6-DIAMINO-1,3-DIMETYLURACIL WITH HALOGEN DERIVATIVES OF CHALCONES
Orlov, V. D.,Kolos, N. N.,Tueni, M.,Yur'eva, E. Yu.,Ivkov, S. M.
, p. 788 - 794 (2007/10/02)
The reaction of 5,6-diamino-1,3-dimethyluracil with 1,3-diaryl-2,3-dibromopropan-1-ones gave β-(5-amino-6-imino-1,3-dimethyluracil)chalcones, and conditions for their cyclocondensation to pyrimidinodiazepines were found.For substantiation of the reaction mechanism, the reaction of the diamine with other halogen derivatives of chalcones was studied.The IR, UV, and mass spectra of the synthesized compounds and their condensation products are discussed.
Reaction of 6-Arylidenehydrazino-1,3-dimethyluracils with Thionyl Chloride Leading to Purine, Thiazolopyrimidine, Pyrimidothiadiazine, Pyrazolopyrimidine, and Thiadiazolopyrimidine Derivatives
Ichiba, Misuzu,Senga, Keitaro
, p. 381 - 384 (2007/10/02)
The reaction of 6-arylidenehydrazino-1,3-dimethyluracils with thionyl chloride in benzene afforded purine, thiazolopyrimidine, pyrimidothiadiazine, pyrazolopyrimidine, and thiadiazolopyrimidine derivatives, while
A NEW CONTRACTION OF PTERIDINE 5-OXIDES TO PURINES AND A 7-DEAZAPURINE BY THE 1,3-DIPOLAR CYCLOADDITION REACTION
Ichiba, Misuzu,Kanazawa, Hashime,Tamura, Zenzo,Senga, Keitaro
, p. 2317 - 2319 (2007/10/02)
The 1,3-dipolar cycloaddition reaction of pteridine 5-oxides with dimethyl acetylenedicarboxylate resulted in a new ring contraction of the pyrazine moiety to give purines and a 7-deazapurine.
Pyrimidine Derivatives and Related Compounds. Part 47. A New Synthesis of Xanthines and Pyrrolopyrimidines by Intramolecular Cyclisation of 6-Substituted 5-Nitrouracil Derivatives
Hirota, Kosaku,Sugiyama, Tadashi,Kitade, Yukio,Senda, Shigeo,Maki, Yoshifumi
, p. 583 - 588 (2007/10/02)
6-Arylalkylamino-1,3-dimethyl-5-nitrouracils (2a-f) were prepared by reaction of 6-chloro-1,3-dimethyl-5-nitrouracil (1) with arylalkylamines in the presence of triethylamine.Among them, the 6-arylalkylaminouracils (2a-d), possessing no substituent at the