TY - JOUR AU - Starke, I AU - Schuster, Ildikó AU - Fülöp, Ferenc AU - Kleinpeter, E TI - Mass spectra of tetrahydroisoquinoline-fused 1,3,2-O,N,P- and 1,2,3-O,S,N-heterocycles: influence of ring size and fusion, of present heteroatoms, substituent effects and of the stereochemistry on fragmentation JF - RAPID COMMUNICATIONS IN MASS SPECTROMETRY J2 - RAPID COMMUN MASS SPECTR VL - 22 PY - 2008 IS - 10 SP - 1519 EP - 1527 PG - 9 SN - 0951-4198 DO - 10.1002/rcm.3543 UR - https://m2.mtmt.hu/api/publication/1399684 ID - 1399684 N1 - Chemisches Institut, Universität Potsdam, Karl-Liebknechtstr. 24-25, 14476 Potsdam (Golm), Germany Institute of Pharmaceutical Chemistry, University of Szeged, RO. Box 121, H-6701 Szeged, Hungary Cited By :2 Export Date: 15 February 2023 CODEN: RCMSE Correspondence Address: Kleinpeter, E.; Chemisches Institut, Karl-Liebknechtstr. 24-25, 14476 Potsdam (Golm), Germany; email: kp@chem.uni-potsdam.de Chemicals/CAS: Isoquinolines AB - The electron ionization (EI) mass spectra of a variety of stereoisomeric tricyclic 1,3,2-oxazaphosphino-[4,3-a]isoquinolines (1-4), 1,2,3-oxathiazino[4,3-a]isoquinoline-4-oxides (5-7) and the -4,4-dioxides (8-10) of oxazaphospholo- and oxathiazolo[4,3-a]- (11, 12, 15 and 16) and -[3,4-b]isoquinolines (13, 14 and 17) were recorded. Ring size and fusion, the different heteroatoms (P and S) and substituents on the ring systems strongly influence the mass spectra. In addition, mass spectra of the stereoisomers of compounds 1, 2 and 13, 14 revealed stereochemically relevant differences which are not observed for the other pairs of isomers. Copyright (C) 2008 John Wiley & Sons, Ltd. LA - English DB - MTMT ER -