刺凌德草碱

(1'S,2S,5R)-2-(t-butyl)-5-(1'hydroxyethyl)-5-isopropyl-1,3-dioxolan-4-one

倒千里光裂碱

((1R,7aR)-1-hydroxy-2,3,5,7a-tetrahydro-1H-pyrrolizin-7-yl)methyl (4R,5S)-4-isopropyl-2,2,5-trimethyl-1,3-dioxolane-4-carboxylate