| 摘要 |
This invention relates to a method for treating abnormal cell proliferation in the brain by administering a compound of formula (I) or a pharmaceutically acceptable salt or hydrate thereof: in which R represents a hydrogen atom or an acetyl, alkoxyacetyl or alkyl radical, R1 represents a benzoyl radical or a radical R2-O-CO- wherein R2 represents an alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, bicycloalkyl, phenyl or heterocyclylic radical, and Ar represents an aryl radical.
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