Two new fumarprotocetraric acid lactones identified and characterized by UHPLC-PDA/ESI/ORBITRAP/MS/MS from the Antarctic lichen Cladonia metacorallifera
- Author:
- Sepúlveda B., Cornejo A., Bárcenas‐Pérez D., Cheel J. & Areche C.
- Year:
- 2022
- Journal:
- Separations
- Pages:
- 9(2): 41 [11 p.]
- Url:
- https://doi.org/10.3390/separations9020041
Lichens are symbiotic organisms between algae and fungi, which are makers of secondary compounds named as lichen substances. Hyphenated techniques have significantly helped natural product chemistry, especially UHPLC/ESI/MS/MS in the identification, separation, and tentative characterization of secondary metabolites from natural sources. Twenty-five compounds were detected from the Antarctic lichen Cladonia metacorallifera for the first time using UHPLC-PDA/ESI/Orbitrap/MS/MS. Compounds 5 and 7 are reported as new compounds, based on their MS/MS fragmentation routes, and considered as fumarprotocetraric acid derivatives. Besides, ten known phenolic identified as orsellinic acid, ethyl 4-carboxyorsellinate, psoromic acid isomer, succinprotocetraric acid, siphulellic acid, connorstictic acid, cryptostictic acid, lecanoric acid, lobaric acid and gyrophoric acid are noticed for the first time in the Cladonia genus.
Keywords: Antarctica; Cladonia; depsides; depsidones; Fumarprotocetraric acid; lichens; UHPLC; ESI/MS/MS.
- Id:
- 34133
- Submitter:
- zdenek
- Post_time:
- Wednesday, 02 February 2022 17:27