for the following products
Boc-Hyp(Bzl)-OH | Boc-Hyp(Bzl)-OH.DCHA | Boc-L-trans-Hyp(Bzl)-OH | Boc-o-Benzyl-L-hydroxyproline | Boc-O-Benzyl-trans-4-hydroxy-L-proline | N-alpha-tert-Butyloxycarbonyl-4-O-benzyl-trans-L-hydroxyproline and Boc-O-benzyl-4-L-hydroxyproline dicyclohexylammonium salt
