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Ion Mobility Mass Spectrometry As an Efficient Tool for Identification of Streptorubin B in M145

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Journal J Nat Prod
Date 2020 Jan 7
PMID 31904955
Citations 3
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Abstract

Ion mobility spectrometry was utilized to corroborate the identity of streptorubin B () as the natural product produced by . Natural product was initially assigned as butylcycloheptylprodigiosin (), and only relatively recently was this assignment clarified. We present additional evidence of this assignment by comparing collisional cross sections (Ω) of synthetic standards of , , and metacycloprodigiosin () to the cyclic prodiginine produced by . Calculated theoretical Ω values demonstrate that cyclic prodiginines could be identified without standards. This work highlights ion mobility as an efficient tool for the dereplication of natural products.

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