We report the synthesis of (+/-)-3,6-Di-O-valproil-1,2: 4,5-di-O-isopropyli
dene-myo-inositol (5) as well as (+/-)-3,6-Di-O- valproil-4,5-O-isopropylid
ene-myo-inositol (6) and (+/-)-3,6-Di-O-valproil-myo-inositol (7), which re
sults from acid hydrolysis of the formers. The anticonvulsant activity of t
he compound 7 (MES test) expressed as ED50 is four times higher than that r
eported for valproic acid.