Four new bioactive lobane diterpenes of the soft coral Lobophytum pauciflorum from Mindoro, Philippines

The marine soft coral Lobophytum pauciflorum collected from Mindoro Island, Philippines, yielded four new lobane diterpene derivatives: the acetate congeners of epoxylobatrienol and lobatrienediol (2 and 7, respectively), a methoxyl congener of lobatetraene (10), and an oxepin congener of lobatriene...

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Veröffentlicht in:Journal of natural products (Washington, D.C.) D.C.), 1998-03, Vol.61 (3), p.358-361
Hauptverfasser: Edrada, R.A, Proksch, P, Wray, V, Witte, L, Ofwegen, L. van
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container_issue 3
container_start_page 358
container_title Journal of natural products (Washington, D.C.)
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creator Edrada, R.A
Proksch, P
Wray, V
Witte, L
Ofwegen, L. van
description The marine soft coral Lobophytum pauciflorum collected from Mindoro Island, Philippines, yielded four new lobane diterpene derivatives: the acetate congeners of epoxylobatrienol and lobatrienediol (2 and 7, respectively), a methoxyl congener of lobatetraene (10), and an oxepin congener of lobatrienetriol (11), and six known derivatives (1, 3-6, and 8). The structures of the new compounds were unambiguously established on the basis of NMR spectroscopic (1H, 13C, COSY, 1H-detected direct, and long-range 13C-1H correlations) and mass spectrometric (EIMS) data. All of the compounds were active against the phytopathogenic fungus Cladosporium cucumerinum. Compound 1 was found to be active against the Gram-positive bacteria Bacillus subtilis and the yeast Saccharomyces cerevisiae. The isolated lobane diterpenes were also active in the brine shrimp lethality test. In the latter bioassay, compounds 8 and 10 were the most active congeners with LC50's of 0.64 and 4.18 micrograms/mL, respectively.
doi_str_mv 10.1021/np970276t
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The structures of the new compounds were unambiguously established on the basis of NMR spectroscopic (1H, 13C, COSY, 1H-detected direct, and long-range 13C-1H correlations) and mass spectrometric (EIMS) data. All of the compounds were active against the phytopathogenic fungus Cladosporium cucumerinum. Compound 1 was found to be active against the Gram-positive bacteria Bacillus subtilis and the yeast Saccharomyces cerevisiae. The isolated lobane diterpenes were also active in the brine shrimp lethality test. In the latter bioassay, compounds 8 and 10 were the most active congeners with LC50's of 0.64 and 4.18 micrograms/mL, respectively.</description><identifier>ISSN: 0163-3864</identifier><identifier>EISSN: 1520-6025</identifier><identifier>DOI: 10.1021/np970276t</identifier><identifier>PMID: 9548875</identifier><identifier>CODEN: JNPRDF</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>AGENT PATHOGENE ; Animals ; Anti-Bacterial Agents ; Anti-Infective Agents - isolation &amp; purification ; Anti-Infective Agents - pharmacology ; ANTIBACTERIAL PROPERTIES ; ANTIFUNGAL PROPERTIES ; ANTIMICROBIAL PROPERTIES ; Antineoplastic Agents - pharmacology ; Artemia ; BACILLUS SUBTILIS ; Bacteria - drug effects ; BIOASSAYS ; Biological and medical sciences ; CHEMICAL COMPOSITION ; CHEMICAL STRUCTURE ; CLADOSPORIUM CUCUMERINUM ; Cnidaria - chemistry ; COMPOSICION QUIMICA ; COMPOSITION CHIMIQUE ; CORAIL ; CORALES ; CORALS ; CREVETTE ; Diterpenes - isolation &amp; purification ; Diterpenes - pharmacology ; DITERPENOIDE ; DITERPENOIDS ; DITERPENOS ; Drug Screening Assays, Antitumor ; ENSAYO BIOLOGICO ; ESPECTROMETRIA ; ESTRUCTURA QUIMICA ; FILIPINAS ; Fungi - drug effects ; GAMBAS Y CAMARONES ; General pharmacology ; Magnetic Resonance Spectroscopy ; Medical sciences ; MICOSIS ; Microbial Sensitivity Tests ; MYCOSE ; MYCOSES ; ORGANISMOS PATOGENOS ; PATHOGENS ; Pharmacognosy. 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Nat. Prod</addtitle><description>The marine soft coral Lobophytum pauciflorum collected from Mindoro Island, Philippines, yielded four new lobane diterpene derivatives: the acetate congeners of epoxylobatrienol and lobatrienediol (2 and 7, respectively), a methoxyl congener of lobatetraene (10), and an oxepin congener of lobatrienetriol (11), and six known derivatives (1, 3-6, and 8). The structures of the new compounds were unambiguously established on the basis of NMR spectroscopic (1H, 13C, COSY, 1H-detected direct, and long-range 13C-1H correlations) and mass spectrometric (EIMS) data. All of the compounds were active against the phytopathogenic fungus Cladosporium cucumerinum. Compound 1 was found to be active against the Gram-positive bacteria Bacillus subtilis and the yeast Saccharomyces cerevisiae. The isolated lobane diterpenes were also active in the brine shrimp lethality test. 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Homeopathy. Health food</topic><topic>Pharmacology. Drug treatments</topic><topic>PHILIPPINES</topic><topic>PRAWNS AND SHRIMPS</topic><topic>PROPIEDADES ANTIMICOSICAS</topic><topic>PROPIEDADES ANTIMICROBIANAS</topic><topic>PROPRIETE ANTIFONGIQUE</topic><topic>PROPRIETE ANTIMICROBIENNE</topic><topic>SACCHAROMYCES CEREVISIAE</topic><topic>SPECTRAL ANALYSIS</topic><topic>SPECTROMETRIE</topic><topic>SPECTROMETRY</topic><topic>STRUCTURE CHIMIQUE</topic><topic>SUBSTANCE TOXIQUE</topic><topic>SUSTANCIAS TOXICAS</topic><topic>TEST BIOLOGIQUE</topic><topic>TOXIC SUBSTANCES</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Edrada, R.A</creatorcontrib><creatorcontrib>Proksch, P</creatorcontrib><creatorcontrib>Wray, V</creatorcontrib><creatorcontrib>Witte, L</creatorcontrib><creatorcontrib>Ofwegen, L. van</creatorcontrib><collection>AGRIS</collection><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of natural products (Washington, D.C.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Edrada, R.A</au><au>Proksch, P</au><au>Wray, V</au><au>Witte, L</au><au>Ofwegen, L. van</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Four new bioactive lobane diterpenes of the soft coral Lobophytum pauciflorum from Mindoro, Philippines</atitle><jtitle>Journal of natural products (Washington, D.C.)</jtitle><addtitle>J. Nat. Prod</addtitle><date>1998-03-01</date><risdate>1998</risdate><volume>61</volume><issue>3</issue><spage>358</spage><epage>361</epage><pages>358-361</pages><issn>0163-3864</issn><eissn>1520-6025</eissn><coden>JNPRDF</coden><abstract>The marine soft coral Lobophytum pauciflorum collected from Mindoro Island, Philippines, yielded four new lobane diterpene derivatives: the acetate congeners of epoxylobatrienol and lobatrienediol (2 and 7, respectively), a methoxyl congener of lobatetraene (10), and an oxepin congener of lobatrienetriol (11), and six known derivatives (1, 3-6, and 8). The structures of the new compounds were unambiguously established on the basis of NMR spectroscopic (1H, 13C, COSY, 1H-detected direct, and long-range 13C-1H correlations) and mass spectrometric (EIMS) data. All of the compounds were active against the phytopathogenic fungus Cladosporium cucumerinum. Compound 1 was found to be active against the Gram-positive bacteria Bacillus subtilis and the yeast Saccharomyces cerevisiae. The isolated lobane diterpenes were also active in the brine shrimp lethality test. In the latter bioassay, compounds 8 and 10 were the most active congeners with LC50's of 0.64 and 4.18 micrograms/mL, respectively.</abstract><cop>Washington, DC</cop><cop>Glendale, AZ</cop><pub>American Chemical Society</pub><pmid>9548875</pmid><doi>10.1021/np970276t</doi><tpages>4</tpages></addata></record>
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identifier ISSN: 0163-3864
ispartof Journal of natural products (Washington, D.C.), 1998-03, Vol.61 (3), p.358-361
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1520-6025
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subjects AGENT PATHOGENE
Animals
Anti-Bacterial Agents
Anti-Infective Agents - isolation & purification
Anti-Infective Agents - pharmacology
ANTIBACTERIAL PROPERTIES
ANTIFUNGAL PROPERTIES
ANTIMICROBIAL PROPERTIES
Antineoplastic Agents - pharmacology
Artemia
BACILLUS SUBTILIS
Bacteria - drug effects
BIOASSAYS
Biological and medical sciences
CHEMICAL COMPOSITION
CHEMICAL STRUCTURE
CLADOSPORIUM CUCUMERINUM
Cnidaria - chemistry
COMPOSICION QUIMICA
COMPOSITION CHIMIQUE
CORAIL
CORALES
CORALS
CREVETTE
Diterpenes - isolation & purification
Diterpenes - pharmacology
DITERPENOIDE
DITERPENOIDS
DITERPENOS
Drug Screening Assays, Antitumor
ENSAYO BIOLOGICO
ESPECTROMETRIA
ESTRUCTURA QUIMICA
FILIPINAS
Fungi - drug effects
GAMBAS Y CAMARONES
General pharmacology
Magnetic Resonance Spectroscopy
Medical sciences
MICOSIS
Microbial Sensitivity Tests
MYCOSE
MYCOSES
ORGANISMOS PATOGENOS
PATHOGENS
Pharmacognosy. Homeopathy. Health food
Pharmacology. Drug treatments
PHILIPPINES
PRAWNS AND SHRIMPS
PROPIEDADES ANTIMICOSICAS
PROPIEDADES ANTIMICROBIANAS
PROPRIETE ANTIFONGIQUE
PROPRIETE ANTIMICROBIENNE
SACCHAROMYCES CEREVISIAE
SPECTRAL ANALYSIS
SPECTROMETRIE
SPECTROMETRY
STRUCTURE CHIMIQUE
SUBSTANCE TOXIQUE
SUSTANCIAS TOXICAS
TEST BIOLOGIQUE
TOXIC SUBSTANCES
title Four new bioactive lobane diterpenes of the soft coral Lobophytum pauciflorum from Mindoro, Philippines
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