Stereochemical studies on the synthesis of 1,2,3,4-tetrahydroisoquinolin-4-ols
摘要:
The stereoselectivity of the acid catalyzed promoted cyclization of adequately substituted alpha-aminoaldehydes to afford a series of tetrahydroisoquinolin-4-ols is studied. The results illustrate the effect of the substituents at C-l and/or C-3 in the target heterocycle. The required precursors 5 and 10 were synthesized from the enantiomerically pure (-)-imines 1 by two different routes, and reacted with cone. HCl. (C) 1998 Elsevier Science Ltd. All rights reserved.
Stereochemical studies on the synthesis of 1,2,3,4-tetrahydroisoquinolin-4-ols
摘要:
The stereoselectivity of the acid catalyzed promoted cyclization of adequately substituted alpha-aminoaldehydes to afford a series of tetrahydroisoquinolin-4-ols is studied. The results illustrate the effect of the substituents at C-l and/or C-3 in the target heterocycle. The required precursors 5 and 10 were synthesized from the enantiomerically pure (-)-imines 1 by two different routes, and reacted with cone. HCl. (C) 1998 Elsevier Science Ltd. All rights reserved.