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- [1] C-13 NUCLEAR MAGNETIC-RESONANCE SPECTRA OF CEVERATRUM ALKALOIDS ORGANIC MAGNETIC RESONANCE, 1980, 14 (02): : 141 - 144
- [2] C-13 NUCLEAR MAGNETIC-RESONANCE SPECTRA OF AMARYLLIDACEAE ALKALOIDS JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2, 1973, (08): : 1180 - 1184
- [3] C-13 NUCLEAR MAGNETIC-RESONANCE SPECTRA OF MORPHINE ALKALOIDS JOURNAL OF ORGANIC CHEMISTRY, 1976, 41 (06): : 996 - 1001
- [4] C-13 NUCLEAR MAGNETIC-RESONANCE SPECTRA OF CINCHONA ALKALOIDS JOURNAL OF ORGANIC CHEMISTRY, 1974, 39 (16): : 2413 - 2416
- [6] C-13 MAGNETIC-RESONANCE SPECTRA OF SOME ISOQUINOLINE ALKALOIDS AND RELATED MODEL COMPOUNDS CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 1976, 54 (14): : 2252 - 2260