3-O-t-butyldimethylsilyl-6-O-acetyl-4,5-O-(1-methylethylidene)-1,2,7,8,9-pentadeoxy-D-talo-nona-1,8-dienitol 在
Grubbs catalyst first generation 作用下,
以
二氯甲烷 为溶剂,
反应 0.67h,
以99%的产率得到(1R,2R,3S,4R)-1-O-acetyl-4-tert-butyldimethylsilyl-2,3-O-(1-methylethylidene)cyclohept-5-ene-1,2,3,4-tetrol