umbelliferone造句

• It is a precursor in the umbelliferone biosynthesis pathway.
• Umbelliferone has been reported to have antioxidant properties.
• In the example shown, umbelliferone itself is produced, albeit in low yield:
• It contains herniarin, a methoxy analog of umbelliferone
• Umbelliferone 7-apiosylglucoside can be isolated from the root of " Gmelina arborea ".
• Chemically, it can be considered a methoxy derivative of coumarin or a methyl derivative of umbelliferone.
• Anticoagulant effect  Coumarin compounds in chamomile such as herniarin and umbelliferone may have blood-thinning properties.
• Umbelliferone is a phenylpropanoid and as such is synthesized from L-phenylalanine, which in turn is produced via the shikimate pathway.
• It is structurally related to coumarin by the addition of a fused furan ring, and may be considered as a derivative of umbelliferone.
• Finally an intramolecular attack from the hydroxyl group of C2'to the carboxylic acid group closes the ring and forms the lactone umbelliferone.
• Other ingredients are aesculetin, aesculin, cichoriin, umbelliferone, scopoletin, 6, 7-dihydrocoumarin, and further sesquiterpene lactones and their glycosides.
• There have been problems reported with coumarin, which in most people is rapidly metabolized to umbelliferone and glycosylated, but there appears to be no toxicity associated with umbelliferone.
• There have been problems reported with coumarin, which in most people is rapidly metabolized to umbelliferone and glycosylated, but there appears to be no toxicity associated with umbelliferone.
• Cell cultures produce the coumarins umbelliferone, scopoletin, psoralen, xanthotoxin, isopimpinellin, rutamarin and rutacultin, and the alkaloids skimmianine, kokusaginine, 6-methoxydictamnine and edulinine.
• Has there been any followup to Dr . Walker's 8 / 7 / 05 short article on the use of umbelliferone ( 7-hydroxycoumarin ) as a sunscreen?
• Chemical compounds isolated from " E . alsinoides " include scopoletin, umbelliferone, scopolin and 2-methyl-1, 2, 3, 4-butanetetrol.
• Some naturally occurring coumarin derivatives include umbelliferone ( 7-hydroxycoumarin ), aesculetin ( 6, 7-dihydroxycoumarin ), herniarin ( 7-methoxycoumarin ), psoralen and imperatorin.
• In addition to 4-HPA, the enzyme has been reported to have activity on a number of other phenolic substrates . and hydroxylation of the pharmacologically interesting phenylpropanoids umbelliferone and resveratrol.
• Umbelliferone occurs in many familiar plants from the Apiaceae ( Umbelliferae ) family such as carrot, coriander and garden angelica, as well as in plants from other families, such as the mouse-ear hawkweed ( " Hieracium pilosella ", Asteraceae ) or the bigleaf hydrangea ( " Hydrangea macrophylla ", Hydrangeaceae, under the name hydrangine ).
• Other compounds found in passion flowers are coumarins ( e . g . scopoletin and umbelliferone ), maltol, phytosterols ( e . g . lutenin ) and cyanogenic glycosides ( e . g . gynocardin ) which render some species, i . e . " benzoflavone, homoorientin, 7-isoorientin, isoshaftoside, isovitexin ( or saponaretin ), kaempferol, lucenin, luteolin, n-orientin, passiflorine ( named after the genus ), quercetin, rutin, saponarin, shaftoside, vicenin and vitexin.