abstract |
New dihydropteridine derivatives (I). Pteridine derivatives of formula (I) and their tautomers, stereoisomers and salts are new. R1-R4 = H or OH; R5 = H, CH3, CH2OH, 1-9C alkyl, (CH(OH))n-Y or (CH(OH))n-(CH2)m-W; Y = H or lower alkyl; W = H or OH; n, m = 1-20. |