Abstract
The fungus Phoma tropica was isolated from the inner tissue of the marine brown alga Fucus spiralis. After large-scale cultivation the fungus was investigated for its secondary metabolite content and found to contain the new natural product 5-hydroxyramulosin (1) together with 7-methoxycoumarin. Both structures were elucidated using spectroscopic methods, mainly 1D and 2D NMR, and in the case of 1, a single crystal X-ray diffraction analysis.
References
-
1 Höller U, König G M, Wright A D. A new tyrosine kinase inhibitor from a marine isolate of Ulocladium botrytis and new metabolites from the marine fungus Asteromyces cruciatus and Varicosporina ramulosa
. European Journal of Organic Chemistry 1999: 2949-55
-
2
Wegner C, Kaminsky R, König G M, Wright A D.
Ascosalipyrrolidinone A, an antimicrobial alkaloid, from the obligate marine fungus Ascochyta salicorniae
.
Journal of Organic Chemistry.
2000;
65
6412-17
-
3
König G M, Wright A D.
Marine natural products research: Current directions and future potential.
Planta Medica.
1996;
62
193-211
-
4
Soledade M, Pedras C, Taylor J L, Nakashima T T.
A novel chemical signal from the ”Blackleg” fungus: Beyond phytotoxins and phytoalexins.
Journal of Organic Chemistry.
1993;
58
4778-80
-
5
Capasso R, Evidente A, Vurro M.
Cytochalasins from Phoma exigua var. heteromorpha
.
Phytochemistry.
1991;
12
3945-50
-
6
Ichihara A, Oikawa H, Hashimoto M, Sakamura S, Haraguchi T, Nagano H.
A phytotoxin, betaenone C, and its related metabolites of Phoma betae Fr.
Agricultural and Biological Chemistry.
1983;
47
2965-7
-
7
Wegner C, Schwibbe M, König G M, Wright A D.
Differences between marine and terrestrial Phoma species as determined by HPLC-DAD and HPLC-MS.
Phytochemical Analysis..
2000;
11
288-94
-
8
Wright A D, König G M, Angerhofer C K, Greenidge P, Linden A, Desqueyroux-Faundéz R.
Antimalarial activity: The search for marine derived natural products which demonstrate selective antimalarial activity.
Journal of Natural Products.
1996;
59
710-6
-
9
Kirsch G, König G M, Wright A D, Kaminsky R.
A new bioactive sesterterpene and antiplasmodial alkaloids from the marine sponge Hyrtios cf. erecta
.
Journal of Natural Products.
2000;
63
825-9
-
10 Sheldrick G M. 1997. SHELXL-97. University of Göttingen Göttingen, Germany;
-
11
Zubía E, Luis F R, Massanet G M, Collado I G.
An efficient synthesis of furanocoumarins.
Tetrahedron.
1992;
20
4239-46
-
12
Devys M, Barbier M, Bousquet J -F, Kollmann A.
Isolation of the (-)-(3R)-5-hydroxymellein from the fungus Septoria nodorum
.
Phytochemistry.
1994;
3
825-6
-
13
Venkatasubbaiah P, Chilton W S.
Phytotoxins of Botryosphaeria obtusa
.
Journal of Natural Products.
1990;
6
1628-30
-
14
Osborne A G.
13C-NMR spectral studies of some methoxycoumarin derivatives. A re-assignment of citropten (limettin) and an examination of peri-proximity effects for the methyl-methoxy and methoxy-methyl couples.
Magnetic Resonance in Chemistry.
1989;
27
348-54
Dr. Anthony D. Wright
Institute for Pharmaceutical Biology
University of Bonn
Nußallee 6
53115 Bonn
Germany