作者:Yanping Xu、Carl R. Johnson
DOI:10.1016/s0040-4039(97)00086-5
日期:1997.2
6S)-4-Acetoxy-6-triisopropylsilyloxy-2-cyclohepten-1-ol, prepared from cycloheptatriene utilizing an asymmetrization of the precursor diol with Candida antarctica lipase B/isopropenyl acetate, was converted to (1S,3R,4S,5S,6R,7R)-4,6,7-triacetoxy-5-benzyloxymethyl-4-acetoxymethyl-2,8-dioxabicyclo[3.2.1]octane representing the core of zaragozic acid by a strategy involving Rubottom oxidations and ozonolysis
使用前体二醇与南极假丝酵母脂肪酶B /乙酸异丙烯酯的不对称反应,由环庚三烯制得的(1 R,4 S,6 S)-4-乙酰氧基-6-三异丙基甲硅烷氧基-2-环庚烯-1-醇被转化为( 1 S,3 R,4 S,5 S,6 R,7 R)-4,6,7-三乙酰氧基-5-苄氧基甲基-4-乙酰氧基甲基-2,8-二氧杂双环[3.2.1]辛烷代表沙巴果酸的策略涉及Rubottom氧化和臭氧分解。