l-Stephanine is a potent and highly selective alpha 1 adrenoceptor blocker, inhibits anococcygeus muscle contraction induced by phenylephrine with pA2 values of 6.76.
Stephanine and crebanine have high inhibitory activity against gram-positive animal pathogenic bacteria, with MIC values of 0.078-0.312g/l, but low inhibitory activity against gram-negative animal pathogenic bacteria, they also inhibit hyphal growth of the plant pathogens Cercospora kaki.
3. Stephanine, pseudopalmatine , tetrahydropalmatine , and xylopinine show significant antiplasmodial activities with IC(50) ranged from 2 uM to 53 uM.
Stephanine ((-)-Stephanine) is an isoquinoline aporphine-type alkaloid. Stephanine induce apoptosis through the reverse of mitotic exit. Stephanine exhibits Antiplasmodial activity. Stephanine can be used for the research of stomach pain, abdominal pain, arthritis and cancer[1][2].
[1] Cui L, et, al. The anti-inflammatory and analgesic activities of 2Br-Crebanine and Stephanine from Stephania yunnanenses H. S.Lo. Front Pharmacol. 2023 Jan 4;13:1092583. DOI:
10.3389/fphar.2022.1092583[2] Le PM, et, al. Stephanine from Stephania venosa (Blume) Spreng Showed Effective Antiplasmodial and Anticancer Activities, the Latter by Inducing Apoptosis through the Reverse of Mitotic Exit. Phytother Res. 2017 Sep;31(9):1357-1368. DOI:
10.1002/ptr.5861
