Tropane alkaloids from the leaves and stem bark of Erythroxylon alaternifolium and Erythroxylon rotundifolium.
A novel 3alpha,6beta,7beta-triol tropane alkaloid esterified by two benzoyl residues was isolated from the leaves of the endemic cuban species, Erythroxylon alaternifolium. Another novel 3alpha,6alpha,7beta-triol tropane alkaloid esterified by trimethoxycinnamoyl and trimethoxybenzoyl residues was isolated from the leaves and stem bark of a second endemic cuban species, Erythroxylon rotundifolium. Their structures were elucidated as 3alpha,7beta-dibenzoyloxy-6beta-hydroxy-tropane and 3alpha-(3,4,5-trimethoxycinnamoyloxy)-7beta-(3,4,5- trimethoxybenzoyloxy)-6alpha-hydroxy-tropane by spectroscopic methods including 2D-NMR techniques.
Payo-Hill
A L
AL
Instituto de Ecologia y Sistematica, CITMA, Boyeros, Habana, Cuba.
Dominguez
R S
RS
Suarez
M O
MO
Batista-Baez
M
M
Castro
H T
HT
Rastrelli
L
L
Aquino
R
R
D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D018515:Plant Leaves / Q000737:chemistry; D019685:Rosales / Q000737:chemistry*; D014326:Tropanes / Q000737:chemistry
D000470:Alkaloids; D014326:Tropanes