A Facile Synthesis of 1,2,3,4-Tetrahydro-7-hydroxyisoquinoline-3-carboxylic Acid, a Conformationally Constrained Tyrosine Analogue - Verschueren, Kris; Toth, Géza; Tourwé, Dirk; Lebl, Michal; Van Binst, Georges; Hruby, Victor (Synthesis, 1992)