Mehta, Goverdhan ; Srinivasa Reddy, D. (2001) 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 Journal of the Chemical Society, Perkin Transactions 1 (10). pp. 1153-1161. ISSN 0300-922X
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Official URL: http://pubs.rsc.org/en/Content/ArticleLanding/2001...
Related URL: http://dx.doi.org/10.1039/B009307F
Abstract
A ready access to enantiopure 3,10-dioxygenated tricyclo[5.2.1.02,6]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 has been demonstrated through the preparation of several optically pure cis-hydrindanes 15-18, employing the Haller-Bauer reaction as the key step for unbridging the trinorbornyl system. The cis-hydrindane (-)-16 has been further elaborated to the natural product (+)-coronafacic acid (+)-24. In an interesting sequence, cis-hydrindanone (+)-18 has been transformed into cis-hydroisoquinolones (+)-30 and (+)-33 via photorearrangement of the derived oxaziridines 29 and 32, respectively. The hydroisoquinolones (+)-30 and (+)-33 can serve as useful enantiopure building blocks for the synthesis of complex indole alkaloids. Oxidative cleavage of the trinorbornene double bond in the tricyclo[5.2.1.02,6]decan-10-one derivative (-)-37 and functional-group adjustments leads to the optically pure diquinane (+)-38, an advanced intermediate in the total synthesis of (+)-coriolin (+)-34.
Item Type: | Article |
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Source: | Copyright of this article belongs to Royal Society of Chemistry. |
ID Code: | 29061 |
Deposited On: | 18 Dec 2010 05:39 |
Last Modified: | 17 May 2016 12:02 |
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