tert-butyl 8-ethynyl-1-formyl-5,6,7-trimethoxyisoquinoline-2(1H)-carboxylate

N-tert-butoxycarbonyl-1-cyano-8-ethynyl-5,6,7-trimethoxy-1,2-dihydroisoquinoline

N-tert-butoxycarbonyl-8-ethynyl-5,6,7-trimethoxy-1-(2,4-oxazolyl)-1,2-dihydro-isoquinoline

16-aza-10,11,12-trimethoxy-18-oxapentacyclo[7.7.1.12,6.02,8.013,17]octadeca-1(16),7,9(10),11,13(17),14-hexaen-4-one

4,5,6-trimethoxy-10H-azuleno[1,2,3-ij]isoquinolin-10-one