... h 17 2. 2.1. 17 2. 2 .2. 18 2. 2 .2. 1. 18 2. 2 .2. 2. 19 2. 2.3. 19 2. 2.3.1. ... Hydroxydroserone [5] H H CH3 OH OGlc Droserone-5-glucoside [6] OH H CH3 OH OGlc Hydroxydroserone-5-gluside R6 R7 [7] CH3 H Rossoliside [8] H CH3 2- Methyl-hydrojuglone-4-glucoside ... 1 1 .2. 2 1.3. 2 1.4. 2 3 2. 1. Drosera burmanni Vahl 3 2. 1.1. 3 2. 1 .2. 3 2. 1.3. ...