List of Figures
1.1 Structure of hederagonic acid (1), hederagenin (2) and the
oleanae scaffold. . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Structure of hederagonic acid saponins. . . . . . . . . . . . . 2
1.3 Selected plants containing hederagonic acid (1). . . . . . . . . 3
2.1 Crystal structure of chlorolactone ketone 27a . . . . . . . . 20
2.2 Commercial prices of oleanolic acid (5) and hederagonic acid
(1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38