A simple entry into enantiopure hydrindanes, hydroisoquinolones and diquinanes from 3,10-dioxygenated dicyclopentadienes: Application to the synthesis of (+)-coronafacic acid and a formal synthesis of (+)-coriolin
作者:Goverdhan Mehta、D. Srinivasa Reddy
DOI:10.1039/b009307f
日期:——
6]decane derivatives is reported. An efficient enzymatic kinetic resolution is employed through transesterification in the presence of lipase PS immobilized on Celite. Absolute configuration of the tricyclo[5.2.1.02,6]decan-10-one derivatives has been secured through correlation with (1R,2S)-1-aminoindan-2-ol. The promising utility of these enantiopure tricyclo[5.2.1.02,6]decane derivatives in synthesis
据报道,现可得到对映体纯的3,10-双加氧的三环[5.2.1.0 2,6 ]癸烷衍生物。在固定在硅藻土上的脂肪酶PS存在下,通过酯交换反应可实现有效的酶动力学拆分。通过与(1 R,2 S)-1-氨基茚满-2-醇相关联,可以确保三环[5.2.1.0 2,6 ] decan-10-one衍生物的绝对构型。这些对映体纯的三环[5.2.1.0 2,6 ]癸烷衍生物在合成中的应用前景广阔,已通过制备几种光学纯的顺式-氢化茚15-18进行了证明,采用Haller-Bauer反应作为解开三降冰片烯的关键步骤。系统。这顺式-茚满(-)- 16已被进一步精制为天然产物(+)-可乐果酸(+)- 24。以有趣的顺序,分别通过衍生的恶唑烷29和32的光重排,将顺式-氢化丹酮(+)- 18转化为顺式-氢异喹诺酮(+)- 30和(+)- 33。氢异喹啉酮(+)- 30和(+)- 33可以用作合成复杂的吲哚生物碱的有用