A novel [3+2] annulation of 1,4-dithiane-2,5-diol and benzothiazolimines has been
developed for the efficient, one-step preparation of highly sterically demanding thiazolidines
in excellent yields (up to 99%) and moderate diastereoselectivities (1:1 to 2.4:1)
under mild conditions within a few minutes. A series of thiazolidines compounds were
obtained and a scaled-up experiment was conducted with excellent results. The absorption,
metabolism, and toxic (ADMET) properties of the compounds were evaluated with good
results, demonstrating the potential applications of this protocol.
Key words
[3+2] annulation - 1,4-dithiane-2,5-diol - benzothiazolimines - thiazolidines - ADMET