ChemInform Abstract: Structure and Antibacterial Activity of Brominated Diterpenes from the Red Alga Sphaerococcus coronopifolius.

ChemInform ◽  
2010 ◽  
Vol 41 (23) ◽  
pp. no-no
Author(s):  
Vangelis Smyrniotopoulos ◽  
Constantinos Vagias ◽  
Mukhlesur M. Rahman ◽  
Simon Gibbons ◽  
Vassilios Roussis
Keyword(s):  
Antibacterial Activity ◽  
Red Alga ◽  
Abstract Structure

New Bioactive Secondary Metabolites from Bornean Red Alga, Laurencia similis (Ceramiales)

2013 ◽  
Vol 8 (3) ◽  
pp. 1934578X1300800 ◽  
Author(s):  
Takashi Kamada ◽  
Charles Santhanaraju Vairappan
Keyword(s):  
Antibacterial Activity ◽  
Secondary Metabolites ◽  
Secondary Metabolite ◽  
Red Alga ◽  
Algal Population ◽  
Cytotoxic Effects ◽  
Antibiotic Resistant ◽  
Good Antibacterial Activity ◽  
Bioactive Secondary Metabolites ◽  
Red Algal

A Bornean red algal population of Laurencia simlis Nam et Saito was analyzed for its secondary metabolite composition. Seven compounds were identified: ent -1(10)-aristolen-9β-ol (1), (+)-aristolone (2), axinysone B (3), 9-aristolen-1α-ol (4), 2,3,5,6-tetrabromoindole (5), 1-methyl-2,3,5,6-tetrabromoindole (6), and 1-methyl-2,3,5-tribromoindole (7). Compound 1 was identified as a new optical isomer of 1(10)-aristolen-9β-ol. Compounds 1, 4 and 5 exhibited good antibacterial activity against antibiotic resistant clinical bacteria and cytotoxic effects against selected cancer cell lines.

Screening of Phytochemicals and Antibacterial Activity of Marine Red Alga Portieria hornemannii (Lyngbye) P. C. Silva

2017 ◽  
Vol 9 (3) ◽  
pp. 131 ◽  
Author(s):  
Subbiah Murugesan ◽  
Sundaresan Bhuvaneswari ◽  
U.S. Mahadeva Rao ◽  
Vajiravelu Sivamurugan
Keyword(s):  
Antibacterial Activity ◽  
Red Alga ◽  
Portieria Hornemannii

scholarly journals Costatone C—A new halogenated monoterpene from the New Zealand red alga plocamium angustum

2020 ◽  
Author(s):  
Joe Bracegirdle ◽  
Z Sohail ◽  
Michael Fairhurst ◽  
Monica Gerth ◽  
Giuseppe Zuccarello ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
New Zealand ◽  
Natural Product ◽  
Absolute Configuration ◽  
Red Algae ◽  
Red Alga ◽  
Product Distributions ◽  
Halogenated Monoterpenes ◽  
The Absolute

© 2019 by the authors Red algae of the genus Plocamium have been a rich source of halogenated monoterpenes. Herein, a new cyclic monoterpene, costatone C (7), was isolated from the extract of P. angustum collected in New Zealand, along with the previously reported (1E,5Z)-1,6-dichloro-2-methylhepta-1,5-dien-3-ol (8). Elucidation of the planar structure of 7 was achieved through conventional NMR and (−)-HR-APCI-MS techniques, and the absolute configuration by comparison of experimental and DFT-calculated ECD spectra. The absolute configuration of 8 was determined using Mosher’s method. Compound 7 showed mild antibacterial activity against Staphylococcus aureus and S. epidermidis. The state of Plocamium taxonomy and its implications upon natural product distributions, especially across samples from specimens collected in different countries, is also discussed.

scholarly journals Antibacterial Bromophenol from the Marine Red Alga Pterosiphonia complanata

2007 ◽  
Vol 2 (7) ◽  
pp. 1934578X0700200
Author(s):  
Samira Etahiri ◽  
Abdel Kebir El Kouria ◽  
Valérie Bultel-Poncé ◽  
Michèle Guyot ◽  
Omar Assobhei
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Minimum Inhibitory Concentration ◽  
Inhibitory Concentration ◽  
Methanol Extract ◽  
Red Alga ◽  
C Nmr

The dichloromethane/methanol extract of the red alga Pterosiphonia complanata exhibited antibacterial activity against many potentially pathogenic Gram (+) and Gram (-) bacteria. The compound responsible for this activity was isolated and identified, mainly on the basis of 1H and 13C NMR experiments, as the known 3,4,6-tribromo-5-methoxymethyl-benzene-1,2-diol. Its minimum inhibitory concentration against Staphylococcus aureus was 2.8 μg/mL (7 nM).

scholarly journals Costatone C—A New Halogenated Monoterpene from the New Zealand Red Alga Plocamium angustum

Marine Drugs ◽  
2019 ◽  
Vol 17 (7) ◽  
pp. 418 ◽  
Author(s):  
Joe Bracegirdle ◽  
Zaineb Sohail ◽  
Michael J. Fairhurst ◽  
Monica L. Gerth ◽  
Giuseppe C. Zuccarello ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
New Zealand ◽  
Natural Product ◽  
Absolute Configuration ◽  
Red Algae ◽  
Red Alga ◽  
Product Distributions ◽  
Halogenated Monoterpenes ◽  
The Absolute

Red algae of the genus Plocamium have been a rich source of halogenated monoterpenes. Herein, a new cyclic monoterpene, costatone C (7), was isolated from the extract of P. angustum collected in New Zealand, along with the previously reported (1E,5Z)-1,6-dichloro-2-methylhepta-1,5-dien-3-ol (8). Elucidation of the planar structure of 7 was achieved through conventional NMR and (−)-HR-APCI-MS techniques, and the absolute configuration by comparison of experimental and DFT-calculated ECD spectra. The absolute configuration of 8 was determined using Mosher’s method. Compound 7 showed mild antibacterial activity against Staphylococcus aureus and S. epidermidis. The state of Plocamium taxonomy and its implications upon natural product distributions, especially across samples from specimens collected in different countries, is also discussed.

Antibacterial activity of Caulerpa racemosa against pathogenic bacteria promoting “ice-ice” disease in the red alga Gracilaria verrucosa

2019 ◽  
Vol 31 (5) ◽  
pp. 3201-3212 ◽  
Author(s):  
Elmi Nurhaidah Zainuddin ◽  
Hilal Anshary ◽  
Huyyirnah Huyyirnah ◽  
Ridha Hiola ◽  
Dolores V. Baxa
Keyword(s):  
Antibacterial Activity ◽  
Pathogenic Bacteria ◽  
Red Alga ◽  
Gracilaria Verrucosa ◽  
Caulerpa Racemosa

ChemInform Abstract: Structure-Based Classification of Antibacterial Activity.

ChemInform ◽  
2010 ◽  
Vol 33 (41) ◽  
pp. no-no
Author(s):  
Mark T. D. Cronin ◽  
et al. et al.
Keyword(s):  
Antibacterial Activity ◽  
Abstract Structure
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