Carquinostatin B, a New Neuronal Cell-protecting Substance Produced byStreptomyces exfoliatus
摘要:
Brain ischemia injury is elicited by the excitotoxicity of l-glutamate. Carquinostatin B was isolated from Streptomyces exfoliatus 2419-SVT2 as a potent neuroprotective substance which protests neuronal hybridoma N18-RE-105 cells from l-glutamate toxicity. The structure of carquinostatin B was established principally by NMR studies to be a carbazole derivative with an ortho quinone function.