Here is an article about CNB-001, a new med derived from curcumin. A new derivative was supposed to be made for curcumin to cross the blood-brain barrier.

http://www.bbc.co.uk/news/health-12409700

In pre-clinical testing some positive results were obtained using curcumin after stroke:

http://www.naturalproductsinsider.co...e-effects.aspx