title: Biosynthesis of the isoquinuclidine moiety of dioscorine. Incorporation of [5,6-13C2]nicotinic acid established by means of 13C nuclear magnetic resonance.
mesh_terms: D000470:Alkaloids / Q000096:biosynthesis*; D009682:Magnetic Resonance Spectroscopy; D009539:Nicotinic Acids / Q000378:metabolism*; D010945:Plants, Edible / Q000378:metabolism; D011812:Quinuclidines / Q000096:biosynthesis*
chemical_list: D000470:Alkaloids; D009539:Nicotinic Acids; D011812:Quinuclidines