Toluene-4-sulfonic acid (R)-4-((3R,3aS,5aR,5bR,7aS,11aR,11bR,13aR,13bS)-5a,5b,8,8,11a,13b-hexamethyl-2,3,3a,4,5,5a,5b,7a,8,9,10,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-3-yl)-pentyl ester 在
lithium aluminium tetrahydride 作用下,
以
乙醚 为溶剂,
反应 3.0h,
以9 mg的产率得到29-ethylhop-6-ene