Xerocomorubin
 | |
| Identifiers | |
|---|---|
| Properties | |
| C18H10O8 | |
| Molar mass | 354.2672 |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Xerocomorubin is a pigment from the fungus group, the Boletales. It is the oxidized form of isoxerocomic acid [1]. Air oxidation is responsible its formation, and oxidizes faster to a similar pulvinic acid type pigment oxidized variant, variegatorubin. [2].[3]. The long wavelength has an absorption at 497 nm, 106 nm higher than its precusor isoxerocomic acid. Synthesis experiments have shown tetra-acetylation by acetic anhydride and sulphuric acid. Although xerocomorubin and variegatorubin give off the same deep red color and could simulataneously occur in a mushroom, extracts from the deep red colored mushroom Boletus rubellus Krombh. identified only variegatorubin by t.l.c, leading to the question the natural abundance of xerocomorubin.
Xerocomorubin
References
- ↑ Gill, M., and Steglich, W. (1987) Pigments of fungi (Macromycetes). Prog Chem Org Nat Prod 51: 1–317.
- ↑ Gill, M., and Steglich, W. (1987) Pigments of fungi (Macromycetes). Prog Chem Org Nat Prod 51: 1–317.
- ↑ Edwards and Gill (1973) Constituents of the Higher Fungi. Part X1l.l Identification of lnvolutin as ( -)-cis-5- (3,4-Di hydroxyphenyl) -3,4-di hyd roxy-2-(4- hydroxyphenyl) - cyclopent-2-enone and Synthesis of (+cis-lnvolutin Trimethyl Ether from lsoxerocomic Acid Derivatives
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