143839-74-1

L 685818 is the C18-hydroxy, C21-ethyl analog of FK-506; binds to FKBP-12; antagonizes FK-506 and rapamycin.

L685818 is a specific immunophilin ligand. L685818 was neuroregenerative and non-neuroprotective in primary brain cultures. L685818 protects dopaminergic neurons from toxic inhibition of MPP+ and 6-OHDA, reduces tyrosine hydroxylase (TH) loss, and promotes neuronal process regeneration. L685818 is also an antifungal reagent for Cryptococcus neoformans[1][2].

[1] Guo X, et al. Neuroimmunophilin ligands exert neuroregeneration and neuroprotection in midbrain dopaminergic neurons. Eur J Neurosci. 2001 May;13(9):1683-93. DOI:10.1046/j.0953-816x.2001.01542.x
[2] Odom A, et al. The immunosuppressant FK506 and its nonimmunosuppressive analog L-685,818 are toxic to Cryptococcus neoformans by inhibition of a common target protein. Antimicrob Agents Chemother. 1997 Jan;41(1):156-61. DOI:10.1128/AAC.41.1.156