The present invention relates to novel compounds that can be employed in the treatment, alleviation or prevention of a group of diseases, disorders and or abnormality associated with misfolding of Tau protein and/or pathological aggregation of Tau (Tubulin associated unit) protein including, but not limited to, Neurofibrillary Tangles (NFTs), such as Alzheimer's disease (AD). The present invention also relates to processes for the preparation of said compounds, pharmaceutical compositions comprising said compounds, methods using said compounds, combinations comprising said compounds, medicaments containing them, and their uses in diseases, disorders and/or abnormalities associated with misfolding of Tau protein and/or pathological aggregation of Tau (Tubulin associated unit) protein.