Perifosine was synthesized via a two-step process. In the first step, phosphorus oxytrichloride (I) was reacted with 4-hydroxy-1-methylpiperidine hydrochloride (II) in dichloromethane at room temperature using pyridine as auxiliary base. The resulting intermediate, without isolation, was reacted with octadecanol (III) to yield desmethyl perifosine (IV). Desmethyl perifosine was purified by recrystallization prior to methylation. The second step consisted of the methylation of desmethyl perifosine (IV), which was carried out with p-toluenesulfonic acid methyl ester in boiling ethanol using potassium carbonate as base. The crude perifosine solution that was obtained after filtration of the cooled reaction mixture was treated with ion exchange resin in order to remove remaining salts and ionic by-products. Pure perifosine was obtained after evaporation and crystallization.

Perifosine was synthesized via a two-step process. In the first step, phosphorus oxytrichloride (I) was reacted with 4-hydroxy-1-methylpiperidine hydrochloride (II) in dichloromethane at room temperature using pyridine as auxiliary base. The resulting intermediate, without isolation, was reacted with octadecanol (III) to yield desmethyl perifosine (IV). Desmethyl perifosine was purified by recrystallization prior to methylation. The second step consisted of the methylation of desmethyl perifosine (IV), which was carried out with p-toluenesulfonic acid methyl ester in boiling ethanol using potassium carbonate as base. The crude perifosine solution that was obtained after filtration of the cooled reaction mixture was treated with ion exchange resin in order to remove remaining salts and ionic by-products. Pure perifosine was obtained after evaporation and crystallization.