The principle constituents of Devdhar is the oil which contains sesquiterpene i.e., a- himachalene (12.5%) and ß-himachalene (43%) associated with them are sesquiterpene alcohols (himachalol, allohimachalol, himadarol, isocentdarol and centdarol. Through spectroscopic analysis (Figure 2), some compounds were isolated from the pine needles of cedrus deodara are identified as 9-hydroxy-dodecanoic acid , ethyl laurate , ethyl stearate , 3-beta-hydroxy-oleanolic acid methyl ester , beta-sitosterol , shikimic acid , methyl coniferin , ferulic acid, beta-glucoside. From dried heartwood powder of plant three compounds with potent antioxidant activity were isolated in significant yields and identified by spectroscopic methods (1H NMR, 13C NMR, IR, and LC-MS). They were identified as (-)-matairesinol, (-)-nortrachelogenin, and a dibenzylbutyrolactollignan (4, 4’, 9-trihydroxy-3, 3’-dimethoxy-9, 9’-epoxylignan). This is the first report of the occurrence of these compounds in plant. From lead acetate purified butanol soluble fraction of wood of cedrus deodara two lignans were isolated. From phytochemical screening of leaf part shows the presence o flavanoids, alkaloids, tannins and saponins. An isolated "CD lignan mixture" comprising lignans from stem wood of the plant consisted of (-)-wikstromal (7-79%), (-)-matairesinol (9-13%) and benzylbutyrolactol (7-11%). Further, cedeodarin (6-methyltaxifolin), dihydromyricetin, cedrin (6-methyldihydromyrecetin) & cedrinoside are also isolated from cedar wood. Isohimachalone, a compound from the essential oil of cedar wood was isolated.
From phytochemical screening Cedrus deodora woods gave positive result for the presence of glycosides, tannins, fixed oils, flavanoids, and triterpenoids (1).