Stereoselective Total Syntheses of Solifenacin and N-Acetyl-1-(4-chlorophenyl)-6,7-dimethoxytetrahydroisoquinoline
作者:B. Reddy、R. Babu、N. Reddy、B. Reddy
DOI:10.1055/s-0034-1378515
日期:——
A highly stereoselective synthesis of 1-aryl-1,2,3,4-tetrahydroisoquinoline drugs such as solefinacin (muscarinic acetylcholine receptor antagonist) and N-acetyl-1-(4-chlorophenyl)-6,7-dimethoxytetrahydroisoquinoline (AMPA receptor antagonist) has been accomplished using (R)-tert-butanesulfinamide as a chiral source. Chiral tetrahydroisoquinolines have been prepared through the aryl Grignard addition to chiral N-sulfinylimines followed by haloamide cyclization.
A convergent and stereoselective total synthesis of (−)-crispine A, (−)-benzo[a]quinolizidine and (−)-salsolidine
A novel strategy has been developed for the syntheses of (−)-crispine, (−)-benzo[a]quinolizidine, and (−)-salsolidine using (R)-tert-butanesulfinamide as a source of chirality. The approach involves the stereoselective addition of Grignard reagent to chiral N-sulfinyl imine followed by cyclization of the secondary amide with a tethered halide as key steps.
使用(R)-叔丁亚磺酰胺作为手性来源,已经开发了一种用于合成(-)-crispine,(-)-苯并[ a ]喹啉嗪和(-)-salsolidine的新策略。该方法涉及将格氏试剂立体选择性地加入手性N-亚磺酰基亚胺中,然后将关键酰胺与束缚的卤化物环化成第二酰胺。