Charton, Julie published the artcileOptimized synthesis of tetrahydroisoquinoline-hydantoins, HPLC of Formula: 142335-42-0, the publication is Tetrahedron Letters (2004), 45(38), 7081-7085, database is CAplus.
Several methods have been developed and compared for the solution synthesis of tetrahydroisoquinoline-hydantoin (Tic-hydantoin) derivatives Starting materials were Tic-OH and amines readily available from com. sources. The best yields were observed when the imidazolidine-2,4-dione ring was synthesized in two steps, i.e., reaction of Tic-OH with the appropriate amine and cyclization with 1,1′-carbonyldiimidazole.
Tetrahedron Letters published new progress about 142335-42-0. 142335-42-0 belongs to tetrahydroisoquinoline, auxiliary class Tetrahydroisoquinoline,Chiral,Carboxylic acid,Amide,Alcohol, name is (S)-2-(tert-Butoxycarbonyl)-7-hydroxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid, and the molecular formula is C15H19NO5, HPLC of Formula: 142335-42-0.
Referemce:
https://en.wikipedia.org/wiki/Tetrahydroisoquinoline,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem