Novel yellow pigment from Pterocarpus santalinus: Biogenetic hypothesis for santalin analogs

14-(4-Fluorophenyl)-14H-dibenzo[a,j]xanthene

“…In particular, benzoxanthenes have attracted much attention in recent years because of their wide range of biological and pharmacological applications, such as antiviral, antibacterial and anti-inflammatory properties (Lambert et al, 1997;Hideo, 1981;Poupelin et al, 1978). The well known Santalin pigments have been isolated from a number of plant species (Kinjo et al, 1995). Xanthenes are also available from natural sources.…”

Biomimetic Total Synthesis of Santalin Y

“…[6] The yellow pigment santalin Y, was isolated by Nohara and co-workers in 1995 as a minor component. [7] Apart from its lack of optical activity, this molecule has several structural features that makes it an attractive target for chemical synthesis. It exhibits a unique [6,6,6,5]-oxafenestrane framework that bears a catechol moiety as well as partially methylated pyrogallol and resorcinol substituents.…”

Zn[(L)Proline]2: an eligible candidate for the synthesis of xanthenediones in water

“…They have been used as sensitizers in photodynamic therapy and have several medicinal uses, such as antiviral, antibacterial and anti‐inflammatory agents, in antagonism of the paralyzing action of zoxazolamine, and can act as versatile synthons because of the inherent activity of the inbuilt pyran ring . Furthermore, because of their useful spectroscopic properties, they are used as dyes, in laser technologies and in fluorescent material for visualization of biomolecules…”