The First Spiroconjugated TTF- and TCNQ-Type Molecules: A New Class of Electroactive Systems?
摘要:
Spiroconjugated TTF-type electron donors (13a-c) and TCNQ-type electron acceptors (10, 11) have been prepared from spiroquinone 9. Cyclic voltammetry reveals a relatively weak accepting ability for 10 and 11, and a strong electron-donor character for 13a-c. Whereas the spiroconjugation introduces a destabilization of the LUMO for compounds 9-11, the opposite is observed for compound 13. thus justifying the redox potential values.
The First Spiroconjugated TTF- and TCNQ-Type Molecules: A New Class of Electroactive Systems?
摘要:
Spiroconjugated TTF-type electron donors (13a-c) and TCNQ-type electron acceptors (10, 11) have been prepared from spiroquinone 9. Cyclic voltammetry reveals a relatively weak accepting ability for 10 and 11, and a strong electron-donor character for 13a-c. Whereas the spiroconjugation introduces a destabilization of the LUMO for compounds 9-11, the opposite is observed for compound 13. thus justifying the redox potential values.
The enantiomerically pure 3,9-disubstitutedspiro[5.5]undecane derivatives 1 to 8 have been prepared by resolution and their absolute configuration determined by chemical correlation with the known (aS)-(−)-spiro[5.5]undecane-3,9-diol (9).
3,9-disubstituted-spiro[5.5]undecanes and ##STR1## wherein, R, Y, A, B and n are defined in the specification, pharmaceutical compositions containing same for the treatment of cardiovascular disorders, such as heart failure and hypertension, are disclosed.