Abstract

Tryptanthrin, an indoloquinazoline alkaloid, was first obtained by sublimation of natural indigo and later isolated from the culture of fungus Candida lipolytica and a variety of other natural sources. Tryptanthrin showed a variety of intriguing biological properties such as antibacterial, antifungal, antiprotozoal, and antiparasitic activities, inhibitory activities against COX-2, 5-LOX, NO synthase and PGE(2) expression, as well as cytotoxic and antitumor activities. Present review covers recent studies on the natural sources, biological activities and mechanisms of their actions, synthesis, structure-activity relationship, and metabolism of tryptanthrin.

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