The conjugated polyenes 10, 11, 21, 22, and 26 with 9-anthryl and 2-tetraphenylporphyrinyl (TPP) terminal groups and an androstane unit incorporated into the polyene chain were synthesized by Wittig or Wittig-type olefinations. In most but not all cases the desired all-(E) isomers could be obtained from the (E)/(Z)-isomeric mixtures by chromatographic purification.From the UV/Vis spectra it is concluded that in all cases the TPP group and the polyene chain are electronically separated, whereas the 9-anthryl residue and the connected dienyl moiety in 10 and 11 are electronically amalgamated. In 21, 22, and 26 a selective excitation of the anthryl group, the TPP moiety, and the polyene is possible. a) die Verbindungen 10 und 11, bei denen der Spacer in das konjugierte Polyen eingebaut ist und b) die Verbindungen 21 und 22, bei denen der Spacer an einem Ende direkt rnit dem Donor, dem 9-Anthryl-Rest, und am anderen Ende rnit der Polyenkette verknupft ist.
Darstellung der Polyene 10 und 11TPP-Polyene 10 und 11 ist in Schema 1 zusammengefaat.Die Darstellung der Steroid-verbruckten Anthracen-