Occurrence of loline alkaloids in Argyreia mollis (Convolvulaceae)*1
1999; Elsevier BV; Volume: 51; Issue: 8 Linguagem: Inglês
10.1016/s0031-9422(99)00121-1
ISSN1873-3700
AutoresBritta Tofern, M. Kaloga, Ludger Witte, Tobias Hartmann, E. Eich,
Tópico(s)Chemical synthesis and alkaloids
ResumoN-Formylloline was isolated from roots of Argyreia mollis. This is the first identification of a 1-aminopyrrolizidine alkaloid (loline alkaloid) in a species of the Convolvulaceae. Lolines are only known from the genus Adenocarpus (Fabaceae) and certain grasses (e. g. Festuca) infected with endophytic fungi. A GC–MS analysis revealed N-formylloline to be present in roots and aerial vegetative plant parts. It is accompanied by three congeners (i. e. loline, N-methylloline and N-propionylnorloline) and simple pyrrolidine alkaloids such as hygrine and its derivatives as well as tropan-3β-ol. Lolines could not be detected in Argyreia capitata, A. hookeri, A. nervosa and numerous species of 14 other convolvulaceous genera.
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