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. 2000 Feb;63(2):193-6.
doi: 10.1021/np990403g.

Novel polycyclic guanidine alkaloids from two marine sponges of the genus Monanchora

J C Braekman  1 , D Daloze, R Tavares, E Hajdu, R W Van Soest
Affiliations

Novel polycyclic guanidine alkaloids from two marine sponges of the genus Monanchora

J C Braekman et al. J Nat Prod. 2000 Feb.

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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