Synthesis of 11H-4b, 10b-dihydro [1] benzopyrano [4,3-c] isoquinoline-6,11 (5H)-diones and 13H-6c, 12b-dihydronaphtho [1′,2′:5,6]-pyrano [4-3c] isoquinoline-8,13 (7H)-dione from homophthalic anhydride and N-(2-hydroxyarylidene) alkylamines
作者:Angelina Georgieva、Elena Stanoeva、Katya Karamfilova、Stefan Spassov、Olyana Angelova、Marietta Haimova、Norbert De Kimpe、Mark Boelens
DOI:10.1016/s0040-4020(01)85515-0
日期:——
towards cyclodehydration to give isoquinolinederivatives with fused [1] benzopyrane (8) or naphthopyrane (12) ring system. The relative configurations of the novel fused heterocyclic compounds 5,8,12,13 and related compounds were determined by NMR studies, and in the case of 13 also by means of X-ray analysis. Some MM2 force field molecular mechanics calculations on some selected fused heterocycles were