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- [12] C-13 NUCLEAR MAGNETIC-RESONANCE SPECTRA OF OPHIBOLINS TETRAHEDRON LETTERS, 1975, (49) : 4415 - 4418
- [14] C-13 NUCLEAR MAGNETIC-RESONANCE SPECTRA OF SPIROBENZYLISOQUINOLINE ALKALOIDS AND RELATED MODEL COMPOUNDS CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 1977, 55 (18): : 3304 - 3311
- [15] C-13 NUCLEAR MAGNETIC-RESONANCE OF PYRROLIZIDINE ALKALOIDS - A REASSIGNMENT JOURNAL OF CHEMICAL RESEARCH-S, 1980, (09): : 330 - 331
- [16] C-13 NUCLEAR MAGNETIC-RESONANCE SPECTROSCOPY OF CEPHALOTAXUS ALKALOIDS ORGANIC MAGNETIC RESONANCE, 1980, 13 (02): : 114 - 115