Comparative study of fourteen alkaloids from Uncaria rhynchophylla hooks and leaves using HPLC-diode array detection-atmospheric pressure chemical ionization/MS method.
The purpose of the study is to compare alkaloid profile of Uncaria rhynchophylla hooks and leaves. Ten oxindole alkaloids and four glycosidic indole alkaloids were identified using HPLC-diode array detection (DAD) or LC-atmospheric pressure chemical ionization (APCI)-MS method, and a HPLC-UV method for simultaneous quantification of major alkaloids was validated. The hooks are characterized by high levels of four oxindole alkaloids rhynchophylline (R), isorhynchophylline (IR), corynoxeine (C) and isocorynoxeine (IC), while the leaves contained high level of two glycosidic indole alkaloids vincoside lactam (VL) and strictosidine (S). The presented methods have proven its usefulness in chemical characterization of U. rhynchophylla hooks and leaves.
School of Traditional Chinese Medicine, Shenyang Pharmaceutical University, 103 Wenhua Rd., Shenyang 110016, China.
Jialin
J
Qu
Tianxing
T
Gong
Bin
B
Ma
Lin
L
Zhang
Yoshihiro
Y
Kano
Dan
D
Yuan
D000470:Alkaloids / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D007211:Indoles / Q000737:chemistry; D010087:Oxides / Q000737:chemistry; D000078183:Oxindoles; D018515:Plant Leaves / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization; D032070:Uncaria / Q000737:chemistry*
D000470:Alkaloids; D007211:Indoles; D010087:Oxides; D000078183:Oxindoles; C022960:2-oxindole