Hirosato Takikawa, Junko Koizumi, Yuko Kato and Kenji Mori
Hippospongic acid A (1), a triterpene metabolite of a marine sponge Hippospongia sp. with inhibitory activity against gastrulation of starfish embryos, was synthesized as its racemate by starting from (2E,6E
)-farnesol (2).