Deb, Soumitra ; Bhattacharjee, Gopa ; Ghatak, Usha Ranjan (1990) Synthetic studies towards complex diterpenoids. Part 18. Total synthesis of (±)-isopisiferin and the related compounds Journal of the Chemical Society, Perkin Transactions 1 (5). pp. 1453-1458. ISSN 0300-922X
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Official URL: http://pubs.rsc.org/en/Content/ArticleLanding/1990...
Related URL: http://dx.doi.org/10.1039/P19900001453
Abstract
A simple convergent and general method has been developed for the synthesis of (±)-isopisiferin (1c), a rearranged abietane diterpene, having a hexahydrodibenzo [a,d] cycloheptene ring system, and the related model systems (1a) and (1b), through the respective enolisable tricyclic ketone mixtures (12c) and (13c), (12a) and (13a), and (12b) and (13b), obtained from the corresponding easily accessible 2-arylethyl-3,3-dimethylcyclohexanones (7c), (7a), and (7b). Demethylation of the styrenoid ethers (15b) and (15c) under acid conditions gave the tetracyclic dienones (17b) and (17c) through Ar1-5 cyclisation.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Royal Society of Chemistry. |
| ID Code: | 28096 |
| Deposited On: | 14 Dec 2010 08:23 |
| Last Modified: | 11 Feb 2011 05:30 |
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