REVIEW OF LITERATURE

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CH 3 9 OH CH 3 H H CH3 CH 3 Himachalol (I) Bisarya and Sukh (1968b) described the structure of Allohimachalol that is sesquiterpene alcohol, constituent of the essential oil of Cedrus deodara. CH 3 H CH3 CH 3 Allohimachalol (I) Beri and Sharma (1971) reported chemical examination of the bark of Cedrus deodara. C. deodara bark (15.5 % materials) extracted with solvents and water gave 9.8 % carbohytrates, 47.5 % lignins, 2.2 % tannins, and 2.6 % ash. Alkaloids could not be demonstrated by qualitative chemical tests. Saponification of a wax-like substance extracted with petroleum ether yielded liquid acids (61.9 %), solids (12.7 %) and wax (25.4 %). A higher alcohol and β-sitosterol were present OH CH 3
10 in the un-saponifiable matter. Deodara is the principal timber tree of the Himalaya and its bark may have medicinal properties. Norin and Winell (1971) described ether extracts from the cones of C. atlantica and C. libani which yielded resin acids of the abietane and pimarane types and related diterpeniods. The extracted compounds showed characteristic relation to wood extraction of other species in the Pinaceae but differed from that of the wood for both species. Pande et al. (1971) described their studies on sesquiterpenes that is cis and trans atlantone isolated from Cedrus deodara Loud. Isolation and characterization of pure atlantone is reported for the first time and was found to have trans-geometry. A minor constituent (Atlantone) of the essential oil from Cedrus deodara is shown to be its cis-isomer. Interconversion of isomers is reported. Raghunathan et al. (1971) identified Deodarin as 8-C-methyl- 3,4,5,7-tetrahydroxydihydroflavanol which previously isolated from ether extract of stem bark. Alexander et al. (1972) described their studies on terpenoids. In the essential oil of Cedrus deodara a sesquiterpeniods is present. They first time reported the synthesis of an isotumerone having following reactions. Decarboxylation of β,p-dimethyl-α-cyanocinnamic acid using pyridine gives a nitrite mixture (α,β- and β,γ-unsaturated). Grignard
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REVIEW OF LITERATURE

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