Synthesis of potassium pentagamavunonat-0 using potassium hydroxyde and solvent tertrahydrofuranethanol - Margono, Supardjan Amir; National Laboratory of Molecule Faculty of Pharmacy, Gadjah Mada University, Yogyakarta Indonesia (Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia, 2005)