Narcissus and Daffodil

HCO
3
O
O
6
O
H
N
R
OH
Lycoramine 3,
R=CH3
DemethyI-Iycoramine 4,
R=H
O
O
Haemanthamine 7
R1
3
O
N
1
2
OR2
H
NH
OH
Narciclasine 9, R 1=OH
R=H 2
Lycoricidine , R =R =H
10 1 2
Agronomic factors and galanthamine production 275
OCH3
OR2
OR2
Structural formulae of the Amaryllidaceae alkaloids
At the National Center for Natural Products Research, the potential of Narcissus
cultivars as sources of galanthamine and related alkaloids has been recognised, and
research has been initiated on the agronomic factors that affect galanthamine content
in them. Narcissus has two important advantages over Leucojum aestivum: firstly,
O
O
O
O
O
O
Caranine 5,
R=H
Lycorine 6,
R=OH
H
N
HO
H
O
H
H
O
R
Hippeastrine 8
OCH3
OH
O
Pretazettine 11
H
N
H
H
N
OH