130475-74-0Relevant articles and documents
RING-FUSED THIENOPYRIMIDINEDIONE DERIVATIVES
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, (2008/06/13)
The synthesis of ring-fused thienopyrimidinedione derivatives is described. The novel ring-fused thienopyrimidinedione derivatives are generally vasodilating agents and antihypertensive agents and as such are useful as cardiovascular agents.
Thiophene Systems. 11. The Synthesis of Novel Thieno Tricyclic Ring Systems
Russell, Roland K.,Rampulla, Richard A.,Nievelt, Caroline E. van,Klaubert, Dieter H.
, p. 1761 - 1770 (2007/10/02)
The synthesis of thieno tricyclic compounds is described.The N-1 alkylation of I produced the alkanoic ester precursors.After hydrolysis, the corresponding carboxylic acids were cyclized to the title compounds II.This cyclization step was accomp