THE ROLE OF DISTONIC IONS IN THE FORMATION OF CH3NH3+ AND (CH3)2NH2+ FROM THE MOLECULAR-IONS OF OCTOPAMINE AND SYNEPHRINE

被引：6

作者：

CARDOSO, AM

FERRERCORREIA, AJ

FOKKENS, RH

NIBBERING, NMM

机构：

[1] UNIV AMSTERDAM,INST MASS SPECTROMETRY,NIEUWE ACHTERGRACHT 129,1018 WS AMSTERDAM,NETHERLANDS

[2] UNIV AVEIRO,CTR QUIM MEIO AQUATICO,DEPT QUIM,AVEIRO,PORTUGAL

来源：

JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY | 1990年 / 1卷 / 01期

关键词：

D O I：

10.1016/1044-0305(90)80012-C

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

It is shown by mass-analyzed ion kinetic energy spectrometry that the metastably decomposing molecular ions of octopamine (p-HOC6H4CH(OH)CH2NH2) and synephrine (p-HOC6H4CH(OH)CH2NHCH3) yield only protonated methylamine and dimethylamine, respectively, as product ions. From deuterium labeling and variation of the internal energy of the molecular ions, experimental support has been obtained that these product ions are generated via the occurrence of a distonic ion-neutral complex. In the case of octopamine, this complex would consist of a nitrogen-protonated aminomethyl radical and p-hydroxylbenzaldehyde in which the former species abstracts the aldehydic or phenolic hydrogen atom from the latter to give protonated dimethylamine. © 1990 American Society for Mass Spectrometry.

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页码：104 / 106

页数：3

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