Retigericsaeure B 在
lithium aluminium tetrahydride 作用下,
以
乙醚 为溶剂,
生成 (3R,3aR,5aR,5bR,7aS,8R,9R,10R,11aR,13aS,13bR)-9,10-Dihydroxy-8-hydroxymethyl-3-isopropyl-3a,5a,8,13a-tetramethyl-2,3,3a,4,5,5b,6,7,7a,8,9,10,11,13,13a,13b-hexadecahydro-1H,5aH-cyclopenta[a]chrysene-11a-carboxylic acid methyl ester