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Comparative Study
. 2013 May:89:114-24.
doi: 10.1016/j.phytochem.2013.02.002. Epub 2013 Mar 13.

Comparative metabolite profiling and chemical study of Ramalina siliquosa complex using LC-ESI-MS/MS approach

Delphine Parrot  1 , Saleem Jan, Nicolas Baert, Sylvain Guyot, Sophie Tomasi
Affiliations
Comparative Study

Comparative metabolite profiling and chemical study of Ramalina siliquosa complex using LC-ESI-MS/MS approach

Delphine Parrot et al. Phytochemistry. 2013 May.

Abstract

A chemical study of the lichen Ramalina siliquosa complex found in Brittany was conducted. Eight chemotypes were considered and their chemical composition was elucidated for the first time by LC-MS analysis. Ten main compounds were identified: conhypoprotocetraric acid (1), salazinic acid (2), peristictic acid (3), cryptostictic acid (4), protocetraric acid (5), stictic acid (6), norstictic acid (7), hypoprotocetraric acid (8), 4-O-demethylbarbatic acid (9), (+)-usnic acid (10) and 22 minor compounds were reported. The MS/MS fragmentation patterns of each compound of R. siliquosa complex were determined and proposed.

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