Three new diterpene esters with a tricyclic lathyraneor myrsinol-type skeleton have been isolated from Euphorbia decipiens Boiss & Buhse. The structures have been elucidated by different spectroscopic methods including 1D and 2D NMR spectroscopy techniques.
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Two new unusual monoterpene glycosides, (Z)-3,6-dimethyl-3-(β-D-O-glucosylmethylene)cyclohept-4-ene-1-one (1) and 3,6-dimethyl-3-(β-D-O-glucosylmethylene)cycloheptanone (2) have been isolated along with five known compounds, 3-hydroxy-4-methoxybenzoic acid, 6,7-dihydroxycoumarin, luteolin, apigenin 5-O-αl-L-rhamnoside, and pinocembrin-7-O-rutinoside from ethyl acetate extract of Euphorbia decipiens. The structures of the isolated compounds were elucidated by extensive 1D- and 2D-NMR, and mass spectroscopic analyses.
View Article and Find Full Text PDFThree tricyclic diterpenoids from Euphorbia decipiens.
Planta Med
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HEJ Research Institute of Chemistry, University of Karachi, Karachi, Pakistan.
Three new diterpene esters with a tricyclic lathyraneor myrsinol-type skeleton have been isolated from Euphorbia decipiens Boiss & Buhse. The structures have been elucidated by different spectroscopic methods including 1D and 2D NMR spectroscopy techniques.
View Article and Find Full Text PDFA new Bacillus pasteurii urease inhibitor from Euphorbia decipiens.
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Dr. Panjwani Center for Molecular Medicine and Drug Research, HEJ Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan.
Inhibition of Bacillus pasteurii urease enzyme by 3,7,15-tri-O-acetyl-5-O-nicotinoyl-13,14-dihydroxymyrsinol (1), a diterpene ester with a myrsinol-type skeleton, isolated from Euphorbia decipiens Boiss. and Buhse, was un-competitive consistent with the molecular docking results. The Ki value was 117.
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HEJ Research Institute of Chemistry, International Center for Chemical Sciences, University of Karachi, Karachi-75270, Pakistan.
One myrsinol-type diterpene ester (1) isolated from Euphorbia decipiens was evaluated for analgesic activity in the acetic acid induced writhing test in mice. Different dose (5-20 mg/kg i.p.
View Article and Find Full Text PDFTwo new diterpene polyesters from Euphorbia decipiens.
Nat Prod Res
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H.E.J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan.
Two new myrsinol-type diterpene polyesters 3,5,13,17-tetra-O-acetyl-7-O-benzoyl-15-hydroxymyrsinol (1) and 3,5,13,17-tetra-O-acetyl-7-O-butanoyl-13-hydroxymyrsinol (2), with a tricyclic carbon skeleton have been isolated from Euphorbia decipiens Boiss. & Buhse. The structure elucidation of the isolated compounds was based primarily on HREIMS, EIMS, IR, UV, ID-, and 2D-NMR analyses, including COSY, HMQC, HMBC, and NOESY correlations.
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