Preparation of Sixteen 3-Hydroxy-4- and 7-Hydroxy-1-hydrindanones and 3-Hydroxy-4- and 8-Hydroxy-1-hydroazulenones
作者:Georgia G. Tsantali、John Dimtsas、Constantinos A. Tsoleridis、Ioannis M. Takakis
DOI:10.1002/ejoc.200600639
日期:2007.1
3-Hydroxyoctahydro-4H-inden-4-ones and 7-hydroxyoctahydro-1H-inden-1-ones (1, 2 and 3, 4, respectively), as well as the homologous 3-hydroxyoctahydro-4(1H)-azulenones (5, 6) and 8-hydroxyoctahydro-1(2H)-azulenones (7, 8), were prepared diastereoselectively either from the precursor α,β-enones 9, 10, 11, and 12 or by an isoxazoline method. Unmasking of the isoxazolines 13i, 14i, and 14j with O3 proved
3-Hydroxyoctahydro-4H-inden-4-ones 和 7-hydroxyoctahydro-1H-inden-1-ones(分别为 1, 2 和 3, 4),以及同源的 3-hydroxyoctahydro-4(1H)-azulenones (5, 6) 和 8-羟基八氢-1(2H)-azulenones (7, 8) 是从前体 α,β-烯酮 9、10、11 和 12 或通过异恶唑啉方法非对映选择性制备的。用 O3 暴露异恶唑啉 13i、14i 和 14j 证明比氢解更具立体选择性。在许多情况下,在将可差向异构的非对映异构体通过填充硅胶的柱子时观察到具有 100% 完整性的差向异构化,因此在大多数情况下,反式稠合的氢化茚酮提供顺式稠合的差向异构体,而顺式稠合的氢化茚酮形成反式。这些结果已被 AM1 理论计算证实,这表明这些氢化茚酮系统中的顺式融合差向异构体比转融合变体更