• Natural Product Sciences
• /
• v.2 no.2
• /
• pp.75-85
• /
• 1996

The naphthaquinones-isohexenylnaphthazarins-are mostly found in the ceratenchymatous cells of the roots of some boraginaceous taxa. A total of 34 naphthazarins and their derivatives have been isolated from these taxa till date.