出典:Wikipedia
出典:『Wikipedia』 (2011/04/18 23:08 UTC 版)
Mitraphylline, an oxindole derivative, is an active alkaloid in the leaves of the trees Mitragyna Speciosa, commonly known as Kratom. As a non-narcotic constituent, it also occurs to a significant amount in the bark of Uncaria tomentosa, Cat’s Claw, along with a number of isomeric alkaloids. Due to its structural similarity to Mitragynine and 7-Hydroxymitragynine from Kratom, effects on mu and Delta opiate receptors as well as NMDA-antagonistic actions have been postulated.