| 摘要 |
A process for preparing fluticasone propionate as crystalline polymorphic Form 1 which comprises reacting a compound of formula (II) or a salt thereof with a compound of formula LCH<SUB>2</SUB>F wherein L represents leaving group optionally in the presence of a phase transfer catalyst, a water-immiscible non-solvating organic liquid solvent and water is described.
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