СПОСОБ ЛЕЧЕНИЯ ПОЗДНЕЙ СТАДИИ НЕЭКССУДАТИВНОЙ ФОРМЫ ВОЗРАСТНОЙ МАКУЛЯРНОЙ ДЕГЕНЕРАЦИИMETHOD FOR TREATMENT OF LATE STAGE OF NON-EXUDATIVE
FORM OF AGE-OF-AGED MACULAR DEGENERATION
+)
formed a mixture of the 4-O-methyl- and 4-oxo-9-O-methyl ethers (1:1, overall yield 90%) that were