Sutera foetida

Gousiadou, Chryssoula, Kokubun, Tetsuo, Albach, Dirk C., Gotfredsen, Charlotte H. & Jensen, Søren Rosendal, 2019, Iridoid glucosides in the genus Sutera (Scrophulariaceae) as chemotaxonomic markers in tribe Limoselleae, Phytochemistry 158, pp. 149-155 : 153

3.4. Sutera foetida

Fresh plants (81 g) were blended with EtOH (300 ml) and treated as above to give after concentration 2.23 g residue. Chromatography gave: sugars (1.1 g), a fraction with mainly cachineside I (9, 14 mg), secologanoside (14, 18 mg), sinapoyl glucoside (20, 24 mg), 5-deoxystansioside (8, 230 mg), 7-deoxyloganic acid (10, 35 mg), verbascoside (15, 65 mg) and a fraction (90 mg) which was further separated with repeated C 18 HPLC first with linear gradient of MeOH–H 2 O, 40:60–100:0 over 20 min, t R 17.3 min, then with MeCN-H 2 O, 35:65, isocratic, t R 12.3 min, to give pure suterolide (21, 2.3 mg).