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Biological Activities and 3D QSAR Studies of a Series of Delisea pulchra (cf. fimbriata) Derived Natural Products

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Biological Activities and 3D QSAR Studies of a Series of Delisea pulchra (cf. fimbriata) Derived Natural Products

Auteurs : Anthony D. Wright [Allemagne] ; Rocky De Nys [Allemagne] ; Cindy K. Angerhofer [Allemagne] ; John M. Pezzuto [Allemagne] ; Marion Gurrath [Allemagne]

Source :

Journal of Natural Products [ 0163-3864 ] ; 2006.

RBID : ISTEX:016209EB9D676A0284DB34149560801B13BCD483

Abstract

Twenty-five natural products, mainly halogenated furanones, isolated from the temperate red algae Delisea pulchra were investigated for their cytotoxic, antimicrobial, and antiplasmodial effects, their inhibition of the activity of the enzymes HIV-1-RT (HIV-1-reverse transcriptase), PKC (protein kinase C), and TK (tyrosine kinase), and their inhibition of the biosynthesis of IL-1 (interleukin-1). All were found to mediate a positive response in one or more of these test systems. In particular, compounds 9, 11, 12, 14, 16, 17, 19, and 20 demonstrated cytotoxic activity in all of the assays they were tested in; compounds 11, 12, 17, 19, and 20 were also active in the majority of the anti-infective screens. In the antimalarial and tyrosine kinase assays, compounds 17, 19, and 20 were all active. Molecular modeling studies employing 3D QSAR with receptor modeling methodologies performed with 16 halogenated furanones generated a pharmacophore hypothesis consistent with the experimentally derived cytotoxicity data. This hypothesis is developed around an active molecule having a framework based on compound 11 with an OH function or OAc (assay dependent) at C-7 and bulky electron-rich groups at C-6, such as Cl and Br but not I.

Url:

https://api.istex.fr/ark:/67375/TPS-2B0RKWK7-C/fulltext.pdf

DOI: 10.1021/np050510c

Affiliations:

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Le document en format XML

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<front><div type="abstract">Twenty-five natural products, mainly halogenated furanones, isolated from the temperate red algae Delisea pulchra were investigated for their cytotoxic, antimicrobial, and antiplasmodial effects, their inhibition of the activity of the enzymes HIV-1-RT (HIV-1-reverse transcriptase), PKC (protein kinase C), and TK (tyrosine kinase), and their inhibition of the biosynthesis of IL-1 (interleukin-1). All were found to mediate a positive response in one or more of these test systems. In particular, compounds 9, 11, 12, 14, 16, 17, 19, and 20 demonstrated cytotoxic activity in all of the assays they were tested in; compounds 11, 12, 17, 19, and 20 were also active in the majority of the anti-infective screens. In the antimalarial and tyrosine kinase assays, compounds 17, 19, and 20 were all active. Molecular modeling studies employing 3D QSAR with receptor modeling methodologies performed with 16 halogenated furanones generated a pharmacophore hypothesis consistent with the experimentally derived cytotoxicity data. This hypothesis is developed around an active molecule having a framework based on compound 11 with an OH function or OAc (assay dependent) at C-7 and bulky electron-rich groups at C-6, such as Cl and Br but not I.</div>
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Biological Activities and 3D QSAR Studies of a Series of Delisea pulchra (cf. fimbriata) Derived Natural Products

Biological Activities and 3D QSAR Studies of a Series of Delisea pulchra (cf. fimbriata) Derived Natural Products

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Abstract

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