Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound
Sekikaic acid is an organic compound in the structural class of chemicals known as depsides. It is found in some lichens. First isolated from Ramalina sekika, it is a fairly common lichen product in Ramalina and Cladonia, both genera of lichen-forming fungi.[1] The species epithet of the powdery lichen Lepraria sekikaica refers to the presence of this substance—a rarity in genus Lepraria.[2]
^Cite error: The named reference Culberson 1970 was invoked but never defined (see the help page).
^Cite error: The named reference Lumbsch et al. 2011 was invoked but never defined (see the help page).
Sekikaicacid is an organic compound in the structural class of chemicals known as depsides. It is found in some lichens. First isolated from Ramalina...
The molecular formula C22H26O8 may refer to: Sekikaicacid Syringaresinol This set index page lists chemical structure articles associated with the same...
Its secondary chemistry comprises trace amounts of usnic acid (in the cortex) and sekikaicacid with traces of related substances (in the medulla). Ramalina...
R. peruviana uniquely produces sekikaicacid, while R. dendriscoides is characterised by the presence of salazinic acid in its composition. Ramalina hossei...
containing sekikaicacid instead of divaricatic acid; both species contain triterpenoids as accessory substances; Fuscidea maccarthyl contains sekikaicacid (UV−)...
which differs by having the lichen substance of divaricatic acid, instead of sekikaicacid. Niebla lobulata was first recognized as distinct from other...
lichen substance sekikaicacid, with triterepenes Similar species are Niebla turgida that has divaricatic acid instead of sekikaicacid, and Niebla fimbriata...
occasionally with short rounded lobes, especially near apex, and by containing sekikaicacid, with triterepenes. The cortex is relatively thin, 35–75 (-100) μm thick...
as much as 180°. Lichen substances are sekikaicacid, with accessory triterpenes, in contrast to divaricatic acid in Niebla testudinaria. Determination...
include atranorin, homosekikaic acid, 4'-O-demethylsekikaic acid, and fragilin as minor products, and sekikaicacid as a major metabolite. The specific...
species names have been suggested, one for the salazinic acid species, the other for the sekikaicacid species. Although the same species of Niebla can vary...
with submarginal apothecia; all contain divaricatic acid and less inflated branches. A sekikaicacid-containing species, Niebla siphonoloba, often recognized...
cornea is further characterized by the presence of the lichen substance sekikaicacid, along with triterpenes and pigments concentrated near base. The firm...
atranorin in the upper cortex, with sekikaicacid as the major compound, along with minor amounts of ramalinolic acid, and a few terpenes present in low...
taper upward to a point, while chemically, it contains homosekikaic and sekikaicacids. Its reduced capacity to bioaccumulate toxic heavy metals from its surroundings...
similar species distinguished by the absence of pycnidia and presence of sekikaicacid. Bowler PA, Riefner RE Jr, Rundel PW, Marsh J, Nash III TH (1994). "New...
assumption that differences in the secondary metabolites, sekikaicacid and divaricatic acid, represent different “races” of one species, derived from...
containing homosekikaic acid, sekikaicacid, and fumarprotocetraric acid, and the second one containing only fumarprotocetraric acid. Cladonia vescula is...
lichen substance of divaricatic acid, with accessory triterpenes—in contrast also to Niebla disrupta, which has sekikaicacid and to species in the genus...
dimensions in the range 7–8.5 by 3.5–4.5 μm. Fuscidea multispora contains sekikaicacid, which is a lichen product that can be detected using thin-layer chromatography...
flattened segments, to 8 cm high and 16 cm across, and by containing sekikaicacid, with triterepenes. Niebla palmeri was described by Richard Spjut as...
margins, and Niebla disrupta that differs by the lichen substance, sekikaicacid. Both N. eburnea and N. testudinaria frequently have irregularly dilated...
containing divaricatic acid, with triterepenes. Similar species are Niebla siphonoloba, distinguished by the lichen substance sekikaicacid and by transverse...
salazinic acid, sekikaicacid, and divaricatic acids is a distinctive chemical characteristic of the species, along with the presence of usnic acid in the...
dissecta. The latter two (N. disrupta, N. dissecta) differ in having sekikaicacid. Niebla homalea is often difficult to distinguish from N. testudinaria...
from San Nicolas Island; it differs in having the lichen substance, sekikaicacid. The cortical ridging and branching of N. halei are also similar to...
Ramalina dilacerata contains usnic acid in the cortex, while the medulla is characterized by the presence of sekikaicacid, without any detectable amounts...
dot-like pycnidia positioned centrally on areolae, and by containing sekikaicacid, with triterpenes. The species (N. tesselata) is unique in the genus...
protocetraric acid, a rare chemotype for the genus not found south of Bahía de San Quintín. Another terricolous species, containing sekikaicacid, occurred...
Apothecia are born on the narrow branchlets. Lichen substances are sekikaicacid, with triterpenes. Niebla fimbriata is relatively infrequent and widely...
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