منابع مشابه
Separation Methods for Phytoecdysteroids
Introduction The effectiveness of natural health preparations is based on the amount/ratio of their active ingredients. This can differ in plants depending on the species variant, the part of the plant used, the season or the micro-climate. Moreover, the method of harvest, the drying and extraction techniques used, and any further processing also influence the final composition of medicinal hea...
متن کاملPhytoecdysteroids: Isolation and Biological Applications
Phytoecdysteroids are analogues of arthropod steroid hormones found in plants, where they deter predation by non-adapted predators. Their discovery in several plant species displayed a wide array of rather beneficial agricultural impact. An overview is given on both well-known and recently discovered phytoecdyteroids including a sophisticated isolation scheme and notable physiological and pharm...
متن کاملPhytoecdysteroids from the roots of Achyranthes bidentata Blume.
Two new phytoecdysteroids, (25S)-20,22-O-(R-ethylidene)inokosterone and 20,22-O-(R-3-methoxycarbonyl)propylidene-20-hydroxyecdysone, together with six known phytoecdysteroids 3-8 were isolated from the roots of Achyranthes bidentata Blume. The new structures were established on the basis of spectroscopic studies and chemical evidences. The absolute configuration at C-25 in the structure of know...
متن کاملPhytoecdysteroids from the juice of Serratula coronata L. (Asteraceae).
Seven phytoecdysteroids have been isolated from Serratula coronata L. One of them is a new phytoecdysteroid, 3-epi-20-hydroxyecdysone. Two further ecdysteroids, 20-hydroxyecdysone 22-acetate and taxisterone, are isolated from this species for the first time in addition to the typical S. coronata ecdysteroids, 20-hydroxyecdysone, ecdysone, ajugasterone C and polypodine B. The juice squeezed from...
متن کاملThe biosystematics of Arnica fulgens and A. sororia (Asteraceae)
DOWNIE, S. R., and K. E. DENFORD. 1987. The biosystematics of Amicafilgens and A. sororia (Asteraceae). Can. J . Bot. 65: 559 -570. Amicafilgens Pursh and A. sororia Greene are sympatric throughout most of their ranges in northwestern United States and adjacent southwestern Canada. These taxa were previously recognized as two morphologically overlapping varieties or not very well separated spec...
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ژورنال
عنوان ژورنال: Chemistry of Natural Compounds
سال: 1986
ISSN: 0009-3130,1573-8388
DOI: 10.1007/bf00598381