FTICR-MS and LC-UV/MS-SPE-NMR Applications for the Rapid Dereplication of a Crude Extract from the Sponge Ianthella flabelliformis

Journal of Natural Products
2009.0

Abstract

Dereplication of a methanolic extract of the marine sponge Ianthella flabelliformis using FTICR-MS accurate mass determination and MS(n) techniques enabled rapid and unambiguous detection of a new compound among a plethora of known compounds. Isolation of this compound and the known 19-deoxy analogue using the hyphenated technique LC-UV/MS-SPE-NMR was undertaken, and the structures were confirmed, from a single chromatographic run, as 19-hydroxyaraplysillin-I N(20)-sulfamate (1) and araplysillin-I N(20)-sulfamate (2).

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