(14- ,15- )-14,15Epoxyaspidofractinine (340)
Maireine A (341); R = OMe
Maireine B (342); R =H
N
N
H
O
O
O
O
O
O
O
(-)-Lochnericine (353)
N
O
N
H
O
O
(-)-Echitovenine (346)
N
N
H
O
O
O
O
(-)-Minovincinine (344); R = H
(-)-11-Methoxy minovincinine (345); R = OMe
N
N
H
O
O
OH
Echitovenaldine (347)
N
O
N
H
O
O
O
O
11-Methoxy echitovenidine (348)
N
N
H
O
O
O
O
Echitoveniline (349); R = H
11-Methoxy echitoveniline (350); R = OMe
N
N
H
O
O
O
O
O
O
O
Rhazimol (355)
N
N
O
O
O
Venalstonine (343)
O
O
N
N
H
(19S)-Mindolinine (352)
11-Methoxy echitoserpidine (351)
Deacetyl picraline 3,4,
5-trimethoxybenzoate (354)
N
N
O
O
O
O
O
O
O
O
H
N
N
H
H
O
N
N
H
O
O
O
O
O
O
O
N
N
H
O
O
H
R
R
O
R
O
Fig. 14.60 Chemical structures of various alkaloids from A. mairei (340–355)
Alstomairine A (356)
Alstomairine B (357); R = OMe
Alstomairine C (358); R = OH
O
O
N
H
N
H
O
H
H
O
O
N
H
N
H
O
O
H
H
O
R
Fig. 14.61 Chemical structures of alstomairine A–C (356–358)
520
A. T. Paul et al.