An easy route to 11-hydroxy-eudesmanolides. Synthesis of (±) decipienin A
作者:F. Javier Moreno-Dorado、Francisco M. Guerra、F. Javier Aladro、Jesús M. Bustamante、Zacarías D. Jorge、Guillermo M. Massanet
DOI:10.1016/s0040-4020(99)00328-2
日期:1999.5
The preparation of 11-hydroxy-eudesmanolides with the stereochemistry found in the Umbelliferae family of plants is described. The decalin system of the eudesmane skeleton is produced by the addition of 5-methyl-2-furyllithium to 3-ethoxycyclohex-2-enone and acidic treatment of the resulting adduct. The stereochemistry of the decalones obtained by this method has been corrected. The α-hydroxy-γ-lactone
描述了在伞形科植物家族中发现的具有立体化学的11-羟基-大戟甘露醇的制备。通过将5-甲基-2-呋喃基锂加到3-乙氧基环己-2-烯酮中并对所得的加合物进行酸性处理,可以制得常春藤骨架的十氢化萘体系。通过这种方法获得的十萘烷的立体化学已得到纠正。α-羟基-γ-内酯部分是通过适当的十萘醌与丙酮酸甲酯缩合,然后在卢氏条件下还原而获得的。该方法的有用性已在合成脱蛋白A中得到了证明。