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Novel polycyclic guanidine alkaloids from two marine sponges of the genus Monanchora
Braekman, J.C.; Daloze, D.; Tavares, R.; Hajdu, E.; Van Soest, R.W.M. (2000). Novel polycyclic guanidine alkaloids from two marine sponges of the genus Monanchora. J. Nat. Prod. 63(2): 193-196. dx.doi.org/10.1021/np990403g
In: Journal of Natural Products. American Chemical Society/American Society of Pharmacognosy: Washington DC. ISSN 0163-3864; e-ISSN 1520-6025, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Braekman, J.C.
  • Daloze, D.
  • Tavares, R.
  • Hajdu, E.
  • Van Soest, R.W.M., more

Abstract
    Two marine sponges of the genus Monanchora (Poecilosclerida, Crambeidae) have been found to contain new polycyclic guanidine alkaloids bearing the (5,6,8b)-triazaperhydroacenaphthylene skeleton. Their structures have been determined by detailed spectroscopic analysis. Dehydrobatzelladine C (1) has been isolated from M. arbuscula and crambescidins 359 (2) and 431 (3) from M. unguiculata. The chemotaxonomic implications of these findings are discussed.

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