Acetylgitoxin-α and gitoxin from Digitalis ciliata
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Phenylethanoid Glycosides from Digitalis viridiflora
From the MeOH extract of the leaves of Digitalis viridiflora five phenylethanoid glycosides (1-5) including a new one were isolated. The structure of the new compound was established as 3,4-dihydroxy-βphenylethoxy-O-β-quinovopyranosyl-(16)-4-O-caffeoyl-β-glucopyranoside (viridifloroside, 1) based on extensive 1Dand 2D-NMR spectroscopy as well as MS. Compound 1 is the first example of a phenyle...
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Three new norlimonoids, toonaciliatins A (1), F (6), and G (7), four new limonoids, toonaciliatins B-E (2-5), and five known compounds, 5alpha,6beta,8alpha-trihydroxy-28-norisotoonafolin (8), toonaciliatins H (9) and I (10), febrifugin (11), and khayasin T (12), were isolated from the leaves and stems of Toona ciliata. Compounds 1-3 have an unusual 1-en-3-one system with a 1,11-oxygen bridge, l...
متن کاملDigitalis.
Cardiac glycosides have played a prominent role in the therapy of congestive heart failure since William Withering codified their use in his late 18th century monograph on the efficacy of the leaves of the common foxglove plant (Digitalis purpurea). Despite their widespread acceptance into medical practice in the ensuing 200 years, both the efficacy and the safety of this class of drugs continu...
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متن کاملFlavonoids from Salvia chloroleuca with α-Amylsae and α-Glucosidase Inhibitory Effect
It is believed that the inhibition of carbohydrate hydrolyzing enzymes including α-amylase and α-glucosidase is one of the therapeutic approaches to decrease the postprandial glucose level after a meal, especially in the people with type 2 diabetes. Medicinal plants and their extracts are one of the main sources to find new inhibitors to the enzymes. In our study four flavonoids, namely luteoli...
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ژورنال
عنوان ژورنال: Chemistry of Natural Compounds
سال: 1971
ISSN: 0009-3130,1573-8388
DOI: 10.1007/bf00568441