| 摘要 |
The present invention concerns novel compounds having general formula (I), wherein R<1>, R<2>, R<3>, R<4>, R<5>, R<6> and R<7> are selected from the group consisting of hydrogen, hydroxy and methoxy. At most one of R<1>, R<2> and R<3> and at most one of R<4>, R<5>, R<6> and R<7> is selected from the group consisting of hydroxy and methoxy. M is selected from the group consisting of hydrogen and pharmaceutically acceptable inorganic or organic cations or tautomeric forms thereof. The compounds have immunomodulating activity. |
