longicaudoside-A 在
吡啶 作用下,
以
1,4-二氧六环 为溶剂,
反应 4.0h,
以5 mg的产率得到(2S,3R,4S,5R)-2-[(3R,5R,6R,8R,9S,10R,12R,13S,14S,17R)-3,6-Dihydroxy-17-((R)-1-hydroxymethyl-5-methyl-hexyl)-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-12-yloxy]-tetrahydro-pyran-3,4,5-triol