Synthesis of some new condensed pyrimidines: Thienopteridine and purine derivatives
7-Hydroxypteridine (3) and its isomeric 6-hydroxypteridine (4) were prepared by condensation of 5,6-diaminouracil (1) with ethyl thienoylpyruvate (2) in pyridine and hydrochloric acid, respectively. Compounds 3 and 4 were converted into the corresponding thienopteridines 8 and 9 upon treatment with phosphorus pentasulphide. The synthesis of pteridines 12 and 13 was achieved from nitrosouracil (10). Also, the purine 15 and condensed purine 18 were prepared.
El-Farargy,Assy,Hassanien
p. 109 - 119
(2007/10/02)
Synthesis and structure of 6- and 7-(acylmethyl)pteridines
-
Abdel-Hady,Badawy,Mosselhi,Ibrahim
p. 801 - 803
(2007/10/02)
Application chromatography. XXXIV. Structure of the purple fluorescent substance produced by Eremothecium ashbyil.
-
MASUDA,KISHI,ASAI
p. 291 - 299
(2007/10/07)
More Articles about upstream products of 31053-46-0