15N NMR study of isoquinoline alkaloids
作者： Radek Marek , Otakar Humpa , Jiří Dostál , Jiří Slavík , Vladimír Sklenář
DOI: 10.1002/(SICI)1097-458X(199903)37:3<195::AID-MRC435>3.0.CO;2-D
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摘要: 15N NMR chemical shifts of 40 tertiary and quaternary isoquinoline alkaloids six constitutional types are reported. The selected compounds belong to the classes benzo[c]phenanthridine, protoberberine, benzylisoquinoline, aporphine, pavinane, β-carboline-proaporphine alkaloids. were measured by gradient-enhanced inverse-detected single-quantum (GSQMBC) multiple-quantum (GHMBC) multiple-bond correlation experiments. 1H–15N long-range coupling constants determined from phase-sensitive GSQMBC spectra also reported in order facilitate optimization Copyright © 1999 John Wiley & Sons, Ltd.
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