THE SYNTHESIS OF NOVEL POLYCYCLIC HETEROCYCLIC RING SYSTEMS VIA PHOTOCYCLIZATION .17. THIENO[3',2'4,5]THIENO[2,3-C]NAPHTHO-[2,1-F]QUINOLINE AND THIENO[3',2'4,5]THIENO[2,3-C]NAPHTHO[1,2-G]QUINOLINE

摘要

The synthesis of two previously unknown novel polycyclic heterocyclic ring systems via photocyclization is described. The structural assignment of the isomeric ring systems, 4 and 5, was achieved by the total assignment of their H-1 and C-13 nmr spectra by the concerted usage of two-dimensional nmr methods. [References: 28]