Method for preparing 15-keto-prostaglandin E derivative

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters

Reexamination Certificate

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C562S504000

Reexamination Certificate

active

11703098

ABSTRACT:
Disclosed is an improved method for preparing 15-keto-prostaglandin E derivative. According to the invention, the deprotection of protected hydroxy group required in manufacturing a 15-keto-prostaglandin derivative is conducted under the presence of a phosphoric acid compound.

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