Pinus roxburghii

Two species, chir (Pinus roxburghii Sargent.) size 7.5 x 2.75 x 1.25 cm3and mango (Mangifera indica Linn.) size 7.5 x 1.25 x 1.25 cm3 were studied to establish different reaction variables. Four replicates were taken for each treatment and experiments were carried out with oven-dried samples except in case of those where effect of moisture content was studied. Samples were placed in a reaction chamber and reaction was carried out under reflux conditions at 93+1 C, the boiling point of thioacetic acid. Experimental set-up for vapor phase acetylation is shown in Figure 1. 

Longifolene is primarily found in Indian turpentine oil, which is commercially extracted from Pinus roxburghii (chir pine) (Bornscheuer et al., 2014). In rabbits, longifolene is metabolized as follows attack on the exo-methylene group from the endo-face to form its epoxide followed by isomerization of the epoxide to a stable mrfo-aldehyde. Then rapid CYP-catalyzed hydroj lation of this enr/o-aldehyde occurs (Asakawa et al., 1986) (Figure 9.30). 

Beri R M 1970 Chemical constituents of the bark of Pinus roxburghii Sargent. Ind J Chem 8 469-470... 

Chatterjee A, Dhara K P, Rej R N, Ghosh P C 1977 Hexacosylferulate, a phenolic constituent of Pinus roxburghii. Phytochemistry 16 397-398... 

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