327049-66-1Relevant articles and documents
Derivatives of condensed thieno[2,3-d]-pyrimidines. 20. Synthesis of 2-substituted 5,6-dihydro-8H-pyrano[4′,3′:4,5]thieno[2,3-d] pyrimidin-4(3H)-ones and 5,6,7,8-tetrahydrobenzo-[b]thieno[2,3-d]pyrimidin-4- ones
Mkrtchyan,Noravyan
, p. 392 - 395 (2008/02/04)
We have developed a method for obtaining 2-substituted 3-amino-6,6- dimethyl-5,6-dihydro-8H-pyrano[4′,3′:4,5]-and 5,6,7,8- tetrahydrobenzo[b]thieno[2,3-d]pyrimidin-4(3H)-ones, converted by deamination to the corresponding dihydropyranothieno-3H-pyrimidino