2-[(4aR,6aR,6aS,6bR,8aR,10S,12aR,14bR)-10-hydroxy-2,2,6a,6b,9,9,12a-heptamethyl-1,3,4,5,6,6a,7,8,8a,10,11,12,13,14b-tetradecahydropicen-4a-yl]acetaldehyde 在
甲醇 、 sodium tetrahydroborate 作用下,
以
四氢呋喃 为溶剂,
反应 2.0h,
以100%的产率得到(3S,4aR,6aR,6bS,8aR,12aR,14aR,14bR)-8a-(2-hydroxyethyl)-4,4,6a,6b,11,11,14b-heptamethyl-1,2,3,4a,5,6,7,8,9,10,12,12a,14,14a-tetradecahydropicen-3-ol