5 结果
The contents of four alkaloids in different processed products of Strychnos nux-vomica hamely, vomicine, icajine, strychnine N-oxide and brucine N-oxide, were determined by TLC-densitometry. The relationship between alkaloid contents and processing methods was studied.
Thirteen alkaloids were isolated from the seeds of Strychnos nux-vomica. They were identified as strychnine, beta-colubrine, pseudostrychnine, strychnine N-oxide, brucime, brucine N-oxide, novacine, icajine, vomicine, isostrychnine, isobrucine, isobrucine N-oxide and isostrychnine N-oxide by
To isolate and identify the chemical constituents from the seeds of Strychnos nux-vomica.
Chromatographic separation techniques such as silica gel chromatography,ODS chromatography and Sephadex LH-20 chromatography were used for the isolation and purification. The structures of the chemical
BACKGROUND
Strychnos nux-vomica, commonly known as kuchla, contains strychnine and brucine as main constituents. Minor alkaloids present in the seeds are protostrychnine, vomicine, n-oxystrychnine, pseudostrychnine, isostrychnine, chlorogenic acid, and a glycoside. Seeds are used traditionally to
Results of experiments showed that the contents of strychnine and brucine were about the same in decoction of Strychnos nux-vomica and S. pierriana, but the contents of vomicine, strychnine N-oxide and brucine N-oxide were greater in the former than in the latter. The contents of strychnine and