Abstract

A short and convenient synthesis of exomethylidenecyclopentenone core of cyclopentenone prostaglandins (+)−3 from (−) Corey lactone diol is described. The chiral 5-phenylthio and 5-phenylsulfonyl derivatives of exomethylidenecyclopentenone were obtained and their cytotoxic properties were studied in comparison with the synthesized earlier ethylthio and ethylsulfonyl derivatives of (±)−3, announced as its more stable bioisosteres.

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