(1R,3R,8R,9R,10S)-(+)-9-(3,4-dimethoxy-phenyl)-12,12-dimethoxy-3-(1-methyl-1-trimethylsilanyloxyethyl)-10-triisopropylsilanyloxy-4-oxa-tricyclo[6.3.1.01.5]dodec-5-en-7-one 在
N-溴代丁二酰亚胺(NBS) 作用下,
以
四氯化碳 为溶剂,
反应 19.0h,
以65%的产率得到(1R,3R,8R,9R,10S)-(-)-6-bromo-9-(3,4-dimethoxyphenyl)-12,12-dimethoxy-3-(1-methyl-1-trimethylsilanyloxy-ethyl)-10-triisopropylsilanyloxy-4-oxa-tricyclo[6.3.1.0
1.5]dodec-5-en-7-one