Four cyclopeptide alkaloids from Discaria longispina.
The isolation of the cyclopeptide alkaloids, adoutine-Y', discarine-B, discarine-E, and discarine-X, a new 14-membered cyclopeptide alkaloid from D. longispina, are reported. The structure of the new alkaloid was elucidated by spectroscopic methods and by chemical degradation.
Machado
E C
EC
Departamento de Quimica, Universidade Federal de Santa Maria, RS, Brazil.
Alvarez Filho
A
A
Morel
A F
AF
Monache
F D
FD
D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D001118:Argentina; D001938:Brazil; D009682:Magnetic Resonance Spectroscopy; D010456:Peptides, Cyclic / Q000737:chemistry / Q000302:isolation & purification*; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
D000470:Alkaloids; D010456:Peptides, Cyclic