We evaluate the massless one-loop hexagon integral in six dimensions. The result is given in terms of standard polylogarithms of uniform transcendental weight three, its functional form resembling the one of the remainder function of the two-loop hexagon Wilson loop in four dimensions.
Del Duca, V., Duhr, C., & Smirnov, V. A. (2011). The massless hexagon integral D=6 dimensions. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 703(3), 363-365. https://doi.org/10.1016/j.physletb.2011.07.079 (Original work published 2011)