b-D-Galactopyranoside, (3b,4a,16b)-16,23,28-trihydroxyolean-12-en-3-yl (9CI) 在
吡啶 、
盐酸 作用下,
以
甲醇 、
水 为溶剂,
生成 Acetic acid (4aS,5S,6aS,6bR,9R,10S,12aR)-10-acetoxy-4a,9-bis-acetoxymethyl-2,2,6a,6b,9,12a-hexamethyl-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,13,14b-icosahydro-picen-5-yl ester