The present invention is directed to a new class of triazine derivatives as described by formula I below in which A, X, R
1
, R
2
, R
3
, and R
4
are as defined herein and to the use of the compounds as PDE10 inhibitors.
In sharp contrast to hypervalent iodine(III) compounds, the isoelectronic bromine(III) counterparts have been little studied to date. This knowledge gap is mainly attributed to the difficult-to-control reactivity of λ3-bromanes as well as to their challenging preparation from the highly toxic and corrosive BrF3 precursor. In this context, we present a straightforward and scalable approach to chelation-stabilized
with several analogs were synthesized and evaluated for in vitro inhibition of dipeptidylpeptidaseIV. The experimental data indicated that most designed compounds exhibited significant dipeptidylpeptidaseIV inhibitory activity. Among them, compounds 35f displayed the greatest potency against dipeptidylpeptidaseIV in vitro with the IC50 value of 78 nm. In an oral glucose tolerance test in normal