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Mass spectroscopy of natural products. 20—Quinazoline carboxylic acids 4—Comparative positive and negative ion mass spectroscopic studies of 3,4‐dihydroquinazolin‐4‐on‐3‐ylalkanoic acids and 3,4‐dihydro‐1,2,3‐benzotriazin‐4‐on‐3‐ylalkanoic acids
Author(s) -
Schmidt Jürgen,
Süsse Manfred,
Johne Siegfried
Publication year - 1985
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210200303
Subject(s) - fragmentation (computing) , chemistry , mass spectrometry , ion , ionization , chemical ionization , mass spectrum , spectroscopy , quinazoline , medicinal chemistry , organic chemistry , chromatography , physics , quantum mechanics , computer science , operating system
Abstract The mass spectroscopic behaviour of 3,4‐dihydroquinazolin‐4‐on‐3‐ylalkanoic acids and 3,4‐dihydro‐1,2,3‐benzotriazin‐4‐on‐3‐ylalkanoic acids was studied under positive and negative ionization. The differences in fragmentation both between the ionization modes and between the two heterocyclic systems are discussed by using some 15 N‐labelled derivatives.