Peter, Martin G. ; Snatzke, Günther ; Snatzke, Feliksa ; Nagarajan, K. N. ; Schmid, Hans (1974) About the absolute configuration of cantharsäure and palasonins Helvetica Chimica Acta, 57 (1). pp. 32-64. ISSN 0018-019X
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/hlca.19...
Related URL: http://dx.doi.org/10.1002/hlca.19740570106
Abstract
The absolute configurations of (+)-cantharic acid, a chiral derivative of the achiral insect defensive substance cantharidin (1), and of palasonin, a lower homologue of 1 occurring in the plant Butea frondosa, were shown to be represented by formulas 2 and 3, respectively (scheme 1). These results were obtained by application of the Horeau method (table 1) on the (+)-cantharic acid derivatives (+)-5, (-)-7, and (-) 11 (scheme 2), and the palasonin derivatives (+)-29 and (+)-30 (scheme 4), as well as by comparison of the chiroptical properties (tables 2 and 3) of a number of derivatives, prepared from either cantharic acid or palasonin. - Attempts to incorporate various radioactively labelled precursors into palasonin (3), using young and adult plants, have been so far unsuccessful.
Item Type: | Article |
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Source: | Copyright of this article belongs to John Wiley and Sons. |
ID Code: | 90739 |
Deposited On: | 14 May 2012 04:31 |
Last Modified: | 14 May 2012 04:31 |
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