Abstract: Pyrrolizidine alkaloids(PAs) are widely distributed in plantae.Many PAs are hepatotoxic,Lung toxicity(carcinogenesis),neurotoxic and cytotoxic.
And the chemical constituents of Stachys geobombycis was primarily demonstrated according to precipitadon reaction or color reaction with various indicator.
Objective To study the analgesic effect and the physical dependence of verticinone, which is an isosteroidal alkaloids isolated from Fritillariae Bulbus.
Diester deoxyaconitine is very toxic.When deoxyaconitine was transformed into mono-ester aconitum alkaloids and lipo-alkaloids by human intestinal bacteria, the toxicity decreased.
Fresh soap its components, trace alkaloids, inulin and plant-rich alcohol, as well as chamber and dandelion friedelin diterpene resin acids and other acids have been.
The magnoflorine is considered an effective component of decompression, but it has been studied to have blocking ganglion effect.There are many other alkaloids to be studied.