Extraordinary levels of cadmium and zinc in a marine sponge,Tedania charcoti Topsent: inorganic chemical defense agents

1993 ◽  
Vol 49 (3) ◽  
pp. 263-264 ◽  
Author(s):  
R. J. Capon ◽  
K. Elsbury ◽  
M. S. Butler ◽  
C. C. Lu ◽  
J. N. A. Hooper ◽  
...  
Keyword(s):  
Chemical Defense ◽  
Marine Sponge ◽  
Inorganic Chemical

scholarly journals Dibromotyrosine and Histamine Derivatives from the Tropical Marine Sponge Aplysina sp

2010 ◽  
Vol 5 (3) ◽  
pp. 1934578X1000500 ◽  
Author(s):  
Elena A. Santalova ◽  
Vladimir A. Denisenko ◽  
Valentin A. Stonik
Keyword(s):  
South China Sea ◽  
Chemical Defense ◽  
South China ◽  
Marine Sponge ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
New Compounds ◽  
C Nmr

Two new compounds, 3-amino-7,8-dihydroimidazo-[1,5-c]-pyrimidin-5(6H)-one (1) and ethyl 3-(2-amino-1H-imidazol-4-yl)propylcarbamate (2), along with the previously known 7,8-dihydroimidazo-[1,5-c]-pyrimidin-5(6H)-one (3), aeroplysinin-1 (4), dibromoverongiaquinol (5), bisoxazolidinone derivative (6), aerophobins-1 (7) and −2 (8), purealidins J (9) and L, have been isolated from Aplysina sp. from the South China Sea. The structures were elucidated on the basis of 1H, 13C NMR, MS and IR analyses. The histamine-derived alkaloids 1-3 may be unknown bioconversion products of purealidin J (9), aerophobin-2 (8) and aerophobin-1 (7), respectively, when 7-9 are cleaved at C-8–C-9 in reactions of activated chemical defense in Aplysina sponge.

Topsentins, new toxic bis-indole alkaloids from the marine sponge Topsentiagenitrix

1987 ◽  
Vol 65 (9) ◽  
pp. 2118-2121 ◽  
Author(s):  
Kristin Bartik ◽  
Jean-Claude Braekman ◽  
Désiré Daloze ◽  
Catherine Stoller ◽  
Joëlle Huysecom ◽  
...  
Keyword(s):  
Chemical Defense ◽  
Marine Sponge ◽  
Indole Alkaloids ◽  
Spectroscopic Methods ◽  
Freshwater Sponge ◽  
Dissociated Cells ◽  
The Mediterranean

Three new bis-indole alkaloids, topsentin-A (1), -B1 (2), and -B2 (3) have been isolated from the Mediterranean sponge Topsentiagenitrix and their structure determined by spectroscopic methods. These compounds are weakly toxic for fish and for dissociated cells of the freshwater sponge Ephydatiafluviatilis and thus might be partially responsible for the chemical defense of the sponge.

scholarly journals Insights into Phosphatase-activated Chemical Defense in a Marine Sponge Holobiont

2021 ◽  
Author(s):  
Takahiro Jomori ◽  
Kenichi Matsuda ◽  
Yoko Egami ◽  
Ikuro Abe ◽  
Akira Takai ◽  
...  
Keyword(s):  
Chemical Defense ◽  
Marine Sponge ◽  
Marine Sponges ◽  
Cytotoxic Compounds ◽  
Discodermia Calyx

Marine sponges often contain potent cytotoxic compounds, which in turn evokes the principle question of how marine sponges avoid self-toxicity. In a marine sponge Discodermia calyx, the highly toxic calyculin...

Scopularides A and B, two new cyclodepsipeptides from the marine sponge-derived fungus Scopulariopsis brevicaulis

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
I Kajahn ◽  
Z Yu ◽  
G Lang ◽  
R Schmaljohann ◽  
JF Imhoff
Keyword(s):  
Marine Sponge ◽  
Scopulariopsis Brevicaulis

New cystine knot peptides from a marine sponge Asteropus sp.

Planta Medica ◽  
2010 ◽  
Vol 76 (12) ◽  
Author(s):  
J Jung ◽  
H Li ◽  
J Li ◽  
C Lee ◽  
W Lee ◽  
...  
Keyword(s):  
Marine Sponge ◽  
Cystine Knot

Pentacyclic ingamine-type alkaloids, a new antiplasmodial pharmacophore from the marine sponge Petrosid Ng5 Sp5

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
I Muhammad ◽  
MA Ibrahim ◽  
S Khan ◽  
M Jacob ◽  
BL Tekwani ◽  
...  
Keyword(s):  
Marine Sponge
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