Hemisynthesis of lupeol and betulin derivatives and their in vitro antimalarial activity against Plasmodium falciparum FCR3. - Bafarawa ID; Abd Ghani MS; Ramadani AP; Fuadah S; Othman MBH; Ibrahim MN; Liew SY; Che Omar MT; A Wahab H; Azmi MN (Natural product research, 2025)