New Amaryllidaceae Alkaloids from Narcissus papyraceus Ker-Gawler

Chapter 3 Chemical and Biological Aspects of Narcissus Alkaloids

“…Thus, the alkaloid content of N. papyraceus is five times higher in the aerial part than in the bulbs, being toxic for herbivorous mammals (137). The bulbs of N. poeticus, for example, are more dangerous than those of N. pseudonarcissus.…”

Anti-TMV Effects of Amaryllidaceae Alkaloids Isolated from the Bulbs of Lycoris radiata and Lycoricidine Derivatives

“…Structures of the compounds were identified by comparison of their MS and NMR data with those reported in the literature. They were respectively sanguinine ( 1 ) [15], 11-hydroxyvittatine ( 2 ) [16], lycoramine ( 3 ) [17], pancratinine C ( 4 ) [18], homolycorine ( 5 ) [19], hippeastrine ( 6 ) [20], O -demethylhomolycorine N-oxide ( 7 ) [21], zephyranthine ( 8 ) [22], O -methyllycorenine N-oxide ( 9 ) [23], lycoranine C ( 10 ) [24], tazettine ( 11 ) [25], lycorine ( 12 ) [26], 9- O -demethylhomolycorine ( 13 ) [27], homolycorine N-oxide ( 14 ) [23], galanthamine ( 15 ) [28].

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Four New Amaryllidaceae Alkaloids from Lycoris radiata and Their Cytotoxicity

“…With the aid of 1 H-1 H COSY, HSQC, HMBC, and ROESY experiments, all the 1 H and 13 C NMR signals were assigned as shown in l "Table 1. Comparison of the NMR data of 3 with the known compound 9-O-demethylhomolycorine N-oxide suggested that their NMR signals were similar but not identical[16]. The main difference was a hydroxyl group instead…”