ATTEMPTED SYNTHESIS OF BIS-SPIROEPOXIDE DITHIANEDIOXIDE - Ritmaleni, Ritmaleni; Dep. Pharmacy Chemistry Faculty of Pharmacy , Universitas Gadjah Mada, Sekip Utara, Yogjakarta, 55281, Indonesia (Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia, 2012)