Constituents of the roots of Melochia chamaedrys.
The cyclic peptide alkaloid, chamaedrine, was isolated from the roots of Melochia chamaedris (Sterculiaceae), along with four known cyclic peptide alkaloids (adouetine X, frangulaline, scutianine B and scutianine C), and waltherione A, parasorbic acid, propacine, and (-)-epicatequine. Their structures were elucidated on the basis of spectroscopic analysis, especially by 2D NMR ((1)H-(1)H-COSY, NOESY, HMQC, HMBC).
Dias
G C D
GC
Departamento de Química, NPPN, Universidade Federal de Santa Maria, 97045-100 Santa Maria, RS, Brazil.
Gressler
V
V
Hoenzel
S C S M
SC
Silva
U F
UF
Dalcol
I I
II
Morel
A F
AF
D000470:Alkaloids / Q000737:chemistry* / Q000302:isolation & purification; D000596:Amino Acids / Q000032:analysis; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D019660:Malvaceae / Q000737:chemistry*; D008968:Molecular Conformation; D010456:Peptides, Cyclic / Q000737:chemistry* / Q000302:isolation & purification; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D018517:Plant Roots / Q000737:chemistry*
D000470:Alkaloids; D000596:Amino Acids; D010456:Peptides, Cyclic; D010936:Plant Extracts