New Chloro Depsides from the Lichen Lecanora lividocinerea

Abstract

The new depsides 3,5-dichloro-2′-O-methylnorstenosporic acid (4), 5-chloro-2′-O-methylanziaic acid (5) and 3,5-dichloro-2′-O-methylnorhyperlatolic acid (6) have been detected in the lichenLecanora lividocinerea and the structures of these metabolites have been established by unambiguous synthesis. In addition, the synthesis of the depside 3,5-dichloro-4-O-demethylplanaic acid (7) is described.

A molecular phylogeny of the Lecanora varia group, including a new species from western North America

“…Nomenclature of non-soluble pigments follows Meyer and Printzen (2000). Thin layer chromatography was carried out according to Culberson (1972) and Culberson and Johnson (1982), and high performance liquid chromatography according to Elix et al (2003).…”

Two new lichens from Mount Canobolas, New South Wales

“…Asci were also observed in Lugol's Iodine (I), with and without pretreatment in K. Chemical constituents were identified by thin-layer chromatography (Elix and Ernst-Russell 1993), high-performance liquid chromatography (Elix et al 2003) 40-70 µm thick, usually prominent and persistent, with the remnants of the juvenile exciple resembling a pale discontinuous halo against the darker tissues of the margin; in section the proper exciple initially with a continuous, external, hyaline, more or less paraplectenchymatous layer c. 10-15(-25) µm thick, which becomes radially fissured, and later discontinuous and redundant; this is not cortical in origin, the thallus lacking such a structure. Mature exciple dominated by a dark olive-brown, 15-25 µm thick layer of tightly packed, radiating, thick-walled cells 2-4(-5) µm wide, this subtended by and an extension of a loose radiating network of hyaline anastomosing hyphae 20-30 µm thick, all embedded in a gelatinous matrix; in section the dark outer layer of the exciple along with or completely replaced by the paler internal exciple layer are continuous beneath the hypothecium as a well-defined, cellular 15-20 µm thick layer.…”

A review of the genus Bulbothrix Hale: the species with medullary norstictic or protocetraric acids

“…Chemical constituents of the additional specimens examined were identified by thin-layer chromatography (TLC) using solvent C (Bungartz 2001), and compared with the data on labels left with the specimens. The types had their chemical constituents examined by high performance liquid chromatography (HPLC), following the methods described in Elix et al (2003).…”