Lee, JY Lee, YS Chung, BY Park, H 2024-01-21T18:39:05Z 2024-01-21T18:39:05Z 2021-09-05 1997-02 0040-4020 https://pubs.kist.re.kr/handle/201004/143946 An efficient synthesis of both enantiomers of tetracyclic isoquinoline derivative (-)-2 and (+)-2 was accomplished starting from L-malic acid and L-tartaric acid, respectively. The key step is the stereoselective introduction of quaternary carbon-center in ring juncture using a diastereoselective N-acyliminium ion cyclization of chiral enamides (1, 3). (C) 1997, Elsevier Science Ltd. English PERGAMON-ELSEVIER SCIENCE LTD Asymmetric synthesis of both enantiomers of novel tetracyclic heterocycle, furo[3',2':2,3]pyrrolo[2,1-alpha]isoquinoline derivative via a diastereoselective N-acyliminium ion cyclization Article 10.1016/S0040-4020(96)01179-9 1 TETRAHEDRON, v.53, no.7, pp.2449 - 2458 TETRAHEDRON 53 7 2449 2458 N scie scopus A1997WJ21100011 2-s2.0-0031575592 Chemistry, Organic Chemistry Article DIELS-ALDER REACTION CHIRAL SYNTHESIS ERYTHRINA ALKALOIDS KINETIC RESOLUTION HIGH-PRESSURE ROUTE PHENETHYLSUCCINIMIDES (+)-ERYSOTRINE DIASTEREOMERS ACYLATION asymmetric