(1R,2aR,5R,7aR,7bR,8R)-4-(Bromomethyl)-4,7a-dimethyl-1a,2,5,7a-tetrahydro-2a,5-methano-2aH-oxireno<3,4>cyclopent<1,2-b>oxepin-7b(4H),8-dimethanol 8-acetate 在
Collins oxidation agent 作用下,
以
二氯甲烷 为溶剂,
反应 0.25h,
以90%的产率得到[(1R,3R,5S,6R,9R,12R)-10-(bromomethyl)-5-formyl-6,10-dimethyl-4,11-dioxatetracyclo[7.2.1.01,6.03,5]dodec-7-en-12-yl]methyl acetate