Sh. Wang et al., First stereoselective synthesis of an optically pure beta-substituted histidine: (2S,3S)-beta-methylhistidine, TETRAHEDR L, 41(9), 2000, pp. 1307-1310
We report the first example of the asymmetric synthesis of the beta-substit
uted histidine, (2S,3S)-beta-methylhistidine. A key in the synthesis is the
use of the protecting group, 2-mesitylenesulfonyl (Mts-), for the imidazol
e ring to minimize epimerization during synthesis. (C) 2000 Elsevier Scienc
e Ltd. All rights reserved.