| 摘要 |
NEW MATERIAL:An amide compound expressed by the formula. USE:An anesthetic agent, capable of exhibiting rapid and prolonged paralytic and anesthetic effects and useful for relieving pains, anesthetization in operation, etc. PREPARATION:An optional part, preferably pericarp part of a plant (e.9., Zanthoxylum bungeanum Maxim. or Zanthoxylum periperitum De Candolle) belonging to the genus Zanthoxylum of the family Rutaceae is dried or used in the state and directly extracted. The extraction is carried out by using water or an organic solvent (e.g., chloroform) at <=40 deg.C for 20-40 hr by stirring, shaking, etc. The resultant extract, as necessary, is concentrated at a low temperature under reduced pressure or freeze-dried and subsequently purified by chromatography to afford the aimed substance. |
