Chemical constituants of shringataka - Tectona grandis Linn. F.

shringataka :

shringataka  : Tectona grandis Linn. F.

Phytochemistry:

Wood contains a resin, a little essential oil, fatty oil, fatty acids (stearic, palmatic, oleic and linoleic acids) and a quinine-like substance, tectoquinine(2-methylanthra-quinone). It also contains anthraquinones, naphthaquinones, quinones, different fatty acids, squalene, betulic acid, a triterpene (C30H48O5) and other terpenoids, sugars, polyisoprene, caouthouc-like substances occur predominantly in the lumen. Bark contains tannins. The skin-irritant lapachomone and the antioxidant tectol are present in the heartwood, which also yields a yellowish brown oil and 2-methylanthraquinone. Leaves contain a number of quinones including a quinone having the formula, C19H14O6. Seeds contain a fixed oil containing chiefly stearic, palmitic, oleic and linoleic acids (Ghani, 2003). Root contain lapachol, tectol, dehydrotectol, tectoquinone, β-lapachone, dehydro-α-lapachone and β-sitosterol (Rastogi & Mehrotra, 1993)

PHARMACOLOGY:

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