| abstract |
The present invention relates to the use of pteridine derivatives of the formula Iin which X is O or NH and R<4>, for example, is hydrogen, phenyl or the radical R<4a>-CH2- and R<4a>, for example, is hydrogen, (C1-C4)-alkylmercapto, the radical -NR<11>R<12 >or the radical -OR<13>, and in which R<1>, R<2>, R<3>, R<5>, R<6>, R<7>, R<11>, R<12 >and R<13 >have the meanings given in claim 1, which are nitric oxide synthase inhibitors, for the treatment of diseases which are caused by an increased nitric oxide level. |