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A new dihydroflavonol named dcodarin has been isolated from the stem-bark of Cedrus deod4rcr. From a detailed study of its reactions and spectra, it has been tentatively assigned the constitution 3',4',5,&tctrahydroxy-a-methyl dihydroflavonol. THE famiIy Pinuceae of the order coniferales, has yielded a variety of natural products comprising alkaloids, phenol glycosides, flavonoid compounds, lignans, tannins, resins, mono and sesquiterpenes and diterpene acids. It is divided into three subfamilies, Abietoike, Luricoidae and Pinoiriae. The Cedrus genus belonging to the subfamily Luricoidae has not been subjected to a systematic study of their polyphenols, the only work so far carried out being a qualitative chromatographic study of the distribution of taxifolin-3'-glucoside in Cedrus atlantica (probably, var. gIauca).l We have now examined the stem-bark of C. deoahra in detail. The waxy material in the bark was removed with petroleum ether and the subsequent benzene extraction yielded a terpenoid. Further extraction with ether afforded a new dihydroflavonol, deodarin, in 0.15% yield. Deodarin 'has a molecular formula CldH1,07, melts with decomposition at 248-251", is dextro rotatory

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Author

D. Adinarayana; T.R. Seshadri

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0040-4020)

Published

1965

Language

EN

Field

Chemistry (Physical Sciences)