RESUMEN
Solamargine, solasonine, N-hydroxyrobustine and a new glycoalkaloid, N-hydroxysolamargine, has been isolated from the leaves of Solanum robustum, the structure of which has been elucidated as (25R)-3beta-{O-alpha-L-rhamnopyranosyl-(1-->2)-O-[alpha-L- rhamnopyranosyl- (1-->4)]-beta-D-glucopyranosyloxy}-22alphaN- spirosol-5-en-N-ol.
Asunto(s)
Alcaloides/química , Glicósidos/química , Plantas/química , Esteroides/química , Alcaloides/aislamiento & purificación , Conformación de Carbohidratos , Secuencia de Carbohidratos , Glicósidos/aislamiento & purificación , Conformación Molecular , Datos de Secuencia Molecular , Estructura Molecular , Hojas de la Planta , Esteroides/aislamiento & purificaciónRESUMEN
In addition to solamargine, anguivine and isoanguivine, two new steroidal alkaloid glycosides, (23S)-23-hydroxyanguivine and (23S)-23-hydroxyisoanguivine, have been isolated from roots of Solanum uporo, the structures of which have been assigned by comparison with literature data as (23S,25R)-3 beta-[O-alpha-L-rhamnopyranosyl-(1-->2)-O- [beta-D-xylopyranosyl-(1-->3)]-beta-D-glucopyranosyloxy]-22 alpha N-spirosol-5-en-23-ol and (23S,25R)-3 beta-[O-alpha-L-rhamnopyranosyl-(1-->2)-O-[beta-D- xylopyranosyl-(1-->3)]-beta-D-galactopyranosyloxy]-22 alpha N-spirosol-5-en-23-ol.
Asunto(s)
Glicósidos/química , Raíces de Plantas/química , Conformación de Carbohidratos , Secuencia de Carbohidratos , Glicósidos/aislamiento & purificación , Espectroscopía de Resonancia Magnética , Datos de Secuencia MolecularRESUMEN
In addition to solamargine, two new steroid alkaloid glycosides, anguivine and isoanguivine, have been isolated from the roots of Solanum anguivi, the structures of which have been elucidated as (25R)-3 beta-[O-alpha-L-rhamnopyranosyl-(1-->2)-O-[beta-D- xylopyranosyl-(1-->3)]-beta-D-glucopyranosyloxy]-22 alpha N-spirosol-5-ene and (25R)-3 beta-[O-alpha-L-rhamnopyranosyl-(1-->2)-O-[beta-D-xylopyranosyl- (1-->3)-beta-D-galactopyranosyloxy]-22 alpha N-spirosol-5-ene.
Asunto(s)
Fitosteroles/aislamiento & purificación , Plantas/química , Alcaloides Solanáceos/aislamiento & purificación , Secuencia de Carbohidratos , Espectroscopía de Resonancia Magnética , Espectrometría de Masas/métodos , Datos de Secuencia Molecular , Fitosteroles/química , Alcaloides Solanáceos/químicaRESUMEN
In addition to khasianine, solamargine, xylosylsolamargine and solasonine, three steroidal alkaloid glycosides, solasuaveoline, dihydrosolasuaveoline and isosolasuaveoline, have been isolated from aerial parts of Solanum suaveolens. The structures have been assigned by NMR investigations as (25R)-3 beta-{O-beta-D-glucopyranosyl-(1-->2)-O-beta-D- glucopyranosyl-(1-->4)-[O-alpha-L-rhamnopyranosyl-(1-->2)]-beta-D- galactopyranosyloxy}-22 alpha N-spirosol-5-ene, (25R)-3 beta-{O-beta-D-glucopyranosyl-(1-->2)-O- beta-D-glucopyranosyl-(1-->4)-[O-alpha-L-rhamnopyranosyl-(1-->2)]-beta-D - galactopyranosyloxy}-5 alpha, 22 alpha N-spirosolane and (25R)-3 beta-{O-beta-D-glucopyranosyl-(1-->6)-O- beta-D-glucopyranosyl-(1-->3)-[O-alpha-L-rhamnopyranosyl-(1-->2)]-beta-D - galactopyranosyloxy}-22 alpha N-spirosol-5-ene, respectively.
Asunto(s)
Glicósidos/química , Solanaceae/química , Alcaloides Solanáceos/química , Esteroides/química , Secuencia de Carbohidratos , Carbohidratos/análisis , Glicósidos/aislamiento & purificación , Datos de Secuencia Molecular , Estructura Molecular , Resonancia Magnética Nuclear Biomolecular , Alcaloides Solanáceos/aislamiento & purificación , Esteroides/aislamiento & purificaciónRESUMEN
In addition to solamargine, isoanguivine and solasonine, two new steroid alkaloid glycosides, xylosylsolamargine and xylosyl-beta-solamarine, have been isolated from the aerial parts of Solanum coccineum, the structures of which have been elucidated as (25R)-3 beta-[O-beta-D-xylopyranosyl-(1-->2)-O-alpha-L-rhamnopyranosyl- (1-->4)-O-[alpha-L-rhamnopyranosyl-(1-->2)]-beta-D-glucopyranosyloxy+ ++]-22 alpha N-spirosol-5-ene and (25S)-3 beta-[O-beta-D-xylopyranosyl-(1-->2)-O-alpha-L-rhamnopyranosyl- (1-->4)-O-[alpha-L-rhamnopyranosyl-(1-->2)]-beta-D-glucopyranosyloxy+ ++]-22 beta N-spirosol-5-ene.
Asunto(s)
Alcaloides/química , Glicósidos/química , Oligosacáridos/química , Plantas , Esteroides/química , Alcaloides/aislamiento & purificación , Conformación de Carbohidratos , Secuencia de Carbohidratos , Glicósidos/aislamiento & purificación , Espectroscopía de Resonancia Magnética , Espectrometría de Masas , Datos de Secuencia Molecular , Estructura Molecular , Oligosacáridos/aislamiento & purificación , Esteroides/aislamiento & purificaciónRESUMEN
The new biflavonoids 2'-methoxysocotrin-5'-ol, socotrin-4'-ol, and homoisosocotrin-4'-ol were isolated from dragon's blood of Dracaena cinnabari and their structures elucidated mainly by NMR spectroscopy.
RESUMEN
Besides a series of known sterols and triterpenoids, 2-methyl-5-(Z-nonadec-14-enyl)resorcinol and 5-(Z-nonadec-14-enyl)resorcinol have been isolated from leaves of Ardisia silvestris. The last mentioned diphenol has also been obtained from roots of Ardisia gigantifolia. The structures of these resorcinol derivatives were elucidated.
RESUMEN
Tomatidenol, 15alpha-hydroxytomatidenol, and yamogenin were isolated from the leaves, and etioline from the roots of SOLANUM SPIRALE.
RESUMEN
Se plantea en este estudio que la corydina está presente en las especies endémicas cubanas, Guatteria moralessi y G. cubensis, y la liriodenina también lo está en esta última(AU)