Experientia

, Volume 30, Issue 8, pp 849–850 | Cite as

New zoanthoxanthins from the mediterranean zoanthidParazoanthus axinellae

  • L. Cariello
  • S. Crescenzi
  • G. Prota
  • L. Zanetti
Chimica, Biochimica

Riassunto

Ulteriori studi degli estratti etanolici diParazoanthus axinellae hanno condotto all'isolamento di altri quattro pigmenti fluorescenti, denominati parazo-antoxantina A, B, C e D, che differiscono dalla zoantoxantina (I) unicamente per il numero di gruppi metilici legati al cromoforo diamminotetrazaciclopentazulenico.

Literatur

  1. 2.
    L. Cariello, S. Crescenzi, G. Prota, F. Giordano andL. Mazzarella, Chem. Commun.1973, 99.Google Scholar
  2. 3.
    L. Cariello, S. Crescenzi, G. Prota, S. Capasso, F. Giordano andL. Mazzarella, Tetrahedron, in press.Google Scholar
  3. 4.
    Various colonies of animals, collected in different period of the year in the Bay of Naples, were analyzed and in all cases they were found to contain the same zoanthoxanthin pattern.Google Scholar
  4. 5.
    During the elution of the column with 1N ammonia solution, zoanthoxanthin (I) is also desorbed but, owing to its insolubility in water, it precipitates mostly on the resin as fine yellow needles.Google Scholar
  5. 6.
    Found: C, 58.95; H, 6.12; N, 34.21. C12H14N6 requires: C., 59.49; H, 5.82; N, 34.69%.Google Scholar
  6. 7.
    Fluorescence measurements were made with an Aminco-Bowman spectrofluorometer. IR-spectra are recorded with a Perkin-Elmer 457 instrument, UV-spectra with an Optica CF4R spectrophotometer, and PMR-spectra with a Varian HA-100 spectrometer; chemical shifts are expressed in ppm from TMS. Mass spectra and exact mass measurements were obtained by direct insertion technique with an A.E.I. MS-902 double-focus spectrometer (70 eV and 50 μA) at the lowest temperature which gave a definite spectrum (170–190°).Google Scholar
  7. 8.
    Determined by high resolution mass spectral analysis.Google Scholar
  8. 9.
    Notably, the hydrolysis of zoanthoxanthin afforded, also small amounts of the 2-desaminohydroxyderivative of (I), (II) and (III).Google Scholar

Copyright information

© Birkhäuser Verlag 1974

Authors and Affiliations

  • L. Cariello
    • 1
  • S. Crescenzi
    • 1
  • G. Prota
    • 1
  • L. Zanetti
    • 1
  1. 1.Stazione Zoologica, Napoli and Istituto di Chimica Organica dell' Universita di NapoliNapoliItaly

Personalised recommendations