SEARCH Articles Figures Tables 3- thiophene, synthesis H Synthesis Klemm, L. H., Syntheses of Tetracyclic and Pentacyclic Condensed Thiophene Systems Of thiophene Pentacycles Pentacyclic condensed thiophenes, synthesis Synthesis of L-738,372 and Synthesis of Thiophenes Synthesis of tetracyclic and pentacyclic condensed Tetracycles Tetracyclic Tetracyclic condensed thiophenes, synthesis Tetracyclics Tetracyclization Thiophenes, synthesis