Enantioselective Synthesis of a (+)-(2<i>R</i>, 3<i>R</i>)-1,4-Benzodioxane-7-carbaldehyde Derivative, a Key Intermediate in the Total Synthesis of Haedoxan Analogs
作者:Yuji NAKAMURA、Makoto HIRATA、Eiichi KUWANO、Eiji TANIGUCHI
DOI:10.1271/bbb.62.1550
日期:1998.1
(+)-(2R,3R)-7-Formyl-6-methoxy-2-methoxymethyl-3- (3,4-methylenedioxyphenyl)-2,3-dihydro-1,4-benzodioxin (2), a key building block for the total synthesis of haedoxan A, was synthesized from (4R)-4-(phenylmethyl)-2-oxazolidinone (3) in ten steps with a 12% overall yield.
(+)-(2R,3R)-7-甲酰基-6-甲氧基-2-甲氧基甲基-3-(3,4-亚甲基二氧苯基)-2,3-二氢-1,4-苯并二恶英(2),关键建筑由(4R)-4-(苯甲基)-2-恶唑烷酮(3)分十步合成haedoxan A的总合成嵌段,总收率为12%。