As part of our search for sedative substances derived from natural sources, two novel nitrogen compounds, kwansonine C (1) and oxypinnatanine A (2), and two novel salts of quinic acids (4) and (5) were isolated along with four known compounds, fulvanine A (3), icariside D2 (6), sallidroside (7), and (3S,4S)-3,4-dihydroxy-3-methyldihydrofuran-2-one (8), from Hemerocallis fulva L. var. sempervirens. These structures were elucidated by spectroscopic evidence and chemical methods.
Hemerocallis fulva var. sempervirenskwansonine C oxypinnatanine A
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The authors thank Ms. Kayoko Oda, Kyoto Pharmaceutical University, and Professor Naoki Noda, Faculty of Pharmaceutical Sciences, Setsunan University, for measurements of FAB-MS. This work was supported by a Grant-in Aid for Scientific Research (C) (No. 22590025) from the Japan Society for the Promotion of Science.