6533b82cfe1ef96bd128ed54

RESEARCH PRODUCT

New 2-Methoxy Acetylenic Acids and Pyrazole Alkaloids from the Marine Sponge Cinachyrella sp.

Amin MokhlesiAmin MokhlesiPeter ProkschGeorgios DaletosWenhan LinRudolf HartmannTibor KurtánHorst WeberChaidir ChaidirWerner E.g. Müller

subject

food.ingredientLymphomaStereochemistrynatural productsCinachyrella sp.Pharmaceutical ScienceAntineoplastic AgentsPyrazole010402 general chemistry01 natural sciencesArticlepyrazole alkaloidMicechemistry.chemical_compoundAlkaloidsfoodTermészettudományokCell Line TumorDrug DiscoveryAnimalsOrganic chemistryKémiai tudományokCytotoxicitynatural products; marine sponge; Cinachyrella sp.; 2-methoxy acetylenic acid; pyrazole alkaloidPharmacology Toxicology and Pharmaceutics (miscellaneous)lcsh:QH301-705.5biology010405 organic chemistryChemistryAcetylenic acidAbsolute configurationNuclear magnetic resonance spectroscopybiology.organism_classificationMass spectrometricBiosynthetic PathwaysPorifera0104 chemical sciencesSpongelcsh:Biology (General)IndonesiaAlkynesddc:540Fatty Acids UnsaturatedPyrazolesDrug Screening Assays AntitumorCinachyrella2-methoxy acetylenic acidmarine sponge

description

Three new 2-methoxy acetylenic acids (1–3) and a known derivative (4), in addition to three new natural pyrazole alkaloids (5–7) were isolated from an Indonesian marine sponge of the genus Cinachyrella. Compounds 5 and 6 have previously been reported as synthetic compounds. The structures of the new compounds were established on the basis of one- and two-dimensional NMR spectroscopy as well as by mass spectrometric data. The absolute configuration of the new acetylenic acid derivatives (1–3) was established by ECD spectroscopy. All isolated compounds were evaluated for their cytotoxicity against L5178Y mouse lymphoma cells. Compounds 1–4 exhibited strong activity with an IC50 value of 0.3 µM. A plausible biosynthetic pathway for the pyrazole metabolites 5–7 is proposed.

10.3390/md15110356https://www.mdpi.com/1660-3397/15/11/356