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Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

Natural pungent compounds. III. The paradols and associated compounds

DW Connell

Australian Journal of Chemistry 23(2) 369 - 376
Published: 1970

Abstract

A new series of pungent compounds, the 1-(4'-hydroxy-3'-methoxyphenyl). alkan-3-ones, has been isolated from grains of paradise (Amomum melegueta Roscoe) and detected in ginger (Zingiber officinale Roscoe). The name, paradol, which has been previously applied to a mixture of these compounds and the gingerols, is suggested as a group name prefixed with a number corresponding to that given to the gingerol with the same side-chain length to distinguish individual members. The structure of [6]-paradol, as suggested by spectroscopic techniques, was confirmed by synthesis from [6]-gingerol. It occurred in grains of paradise in quantities up to 1.5% and was accompanied by (+)-[6]- gingerol in almost equal amounts. Trace quantities of [8]-gingerol, [a]-paradol, and [6]-shogaol were also present.

https://doi.org/10.1071/CH9700369

© CSIRO 1970

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