The Spurge family （Euphorbiaceae） is a large family of flowering plants. Two plant species of this family were collected from the Egyptian desert, extracted with methanol subjected to silica gel column chromatograph...The Spurge family （Euphorbiaceae） is a large family of flowering plants. Two plant species of this family were collected from the Egyptian desert, extracted with methanol subjected to silica gel column chromatography to give six compounds, three compounds from each plant. The compounds isolated from the methanol extract of Euphorbia retusa Forssk were identified as kaempferol-3-beta-D glucopyranosyl （1）, 3-O-alpha-L-xylopyranosyl （1→3）-alpha-L xylopyranosyl （1→2）, beta-D glucopyranosyllup 1,12-diene-3,21-diol （2） and 5,7,8,3＇,4＇-pentahydroxy-3-methoxyflavone （3） and the compounds isolated from Euphorbia paralais L. identified as 3,5,3＇-trihydroxy-6,7-d-methoxy-4＇ （7＂-hydroxygeranyl-1＂-ether） flavones （4）, 3-O-syringic acid （1→4）-alpha-L- xylopyranosyl （1→3）, beta-D-rahminopyranosyl hederagenin （5） and 3-O-syringic acid （1→4）, beta-D-rahminopyranosyl （1→3）,beta-D-rahminopyranosyl hederagenin （6）. The structure of the isolated compounds was elucidated by chemical and spectrometric analysis such as Infera red （IR）, proton and carbon nuclear magnetic resonance （1H-, 13C-NMR） and chemical ionization mass spectrometry （CI-MS）.展开更多
Based on the screening analysis for the first time in Montenegro, water samples for the presence of emergent wereanalyzed. Results from the locality Vukovci, the lower course of the river Morale, have shown the presen...Based on the screening analysis for the first time in Montenegro, water samples for the presence of emergent wereanalyzed. Results from the locality Vukovci, the lower course of the river Morale, have shown the presence of chemical components that indicate the presence of emergent in the water. Thus identification component is associated with the presence of fiziological groups of microorganisms at the site, which with its functional and significant role in many ways reduce environmental stress.展开更多
文摘The Spurge family （Euphorbiaceae） is a large family of flowering plants. Two plant species of this family were collected from the Egyptian desert, extracted with methanol subjected to silica gel column chromatography to give six compounds, three compounds from each plant. The compounds isolated from the methanol extract of Euphorbia retusa Forssk were identified as kaempferol-3-beta-D glucopyranosyl （1）, 3-O-alpha-L-xylopyranosyl （1→3）-alpha-L xylopyranosyl （1→2）, beta-D glucopyranosyllup 1,12-diene-3,21-diol （2） and 5,7,8,3＇,4＇-pentahydroxy-3-methoxyflavone （3） and the compounds isolated from Euphorbia paralais L. identified as 3,5,3＇-trihydroxy-6,7-d-methoxy-4＇ （7＂-hydroxygeranyl-1＂-ether） flavones （4）, 3-O-syringic acid （1→4）-alpha-L- xylopyranosyl （1→3）, beta-D-rahminopyranosyl hederagenin （5） and 3-O-syringic acid （1→4）, beta-D-rahminopyranosyl （1→3）,beta-D-rahminopyranosyl hederagenin （6）. The structure of the isolated compounds was elucidated by chemical and spectrometric analysis such as Infera red （IR）, proton and carbon nuclear magnetic resonance （1H-, 13C-NMR） and chemical ionization mass spectrometry （CI-MS）.
文摘Based on the screening analysis for the first time in Montenegro, water samples for the presence of emergent wereanalyzed. Results from the locality Vukovci, the lower course of the river Morale, have shown the presence of chemical components that indicate the presence of emergent in the water. Thus identification component is associated with the presence of fiziological groups of microorganisms at the site, which with its functional and significant role in many ways reduce environmental stress.
