Results 141 to 150 of about 1,275 (196)
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Two new phytoecdysteroids isolated from Tournefortia sibirica
Natural Product ResearchTwo new phytoecdysteroids, (24Z)-20,26-dihydroxy-24(28)-dehydro-28-methyl-ecdysone (1), (24Z)-22,25-epoxy-2,3,14,20-tetrahydroxyergosta-7,24(28)-dien-28-methyl-6-one (2), together with eleven known compounds (3 − 13) were isolated from the whole plant of
L. Jin +7 more
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Journal of Nepal Chemical Society
Cancer is a genetic disease that disrupts the normal functioning of cells. This is a disease wherein there is the survival of the old cells that should die while the growth of new and not-needed cells takes place.
Bishnu Adhikari +5 more
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Cancer is a genetic disease that disrupts the normal functioning of cells. This is a disease wherein there is the survival of the old cells that should die while the growth of new and not-needed cells takes place.
Bishnu Adhikari +5 more
semanticscholar +1 more source
Phytoecdysteroids ofDiploclisia glaucescensSeed
Planta Medica, 1985Five phytoecdysteroids were isolated from the seeds of DIPLOCLISIA GLAUCESCENS and identified by spectrometric methods ( (1)H-NMR, (13)C-NMR and CIMS). One of them, 24- EPI- makisterone A, has not been reported before. The other four - 20-hydroxyecdysone, makisterone A, 24(28)-dehydromakisterone A and pterosterone - were known previously. The (13)C-NMR
R W, Miller +8 more
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Phytoecdysteroids: biological aspects
Phytochemistry, 2001Phytoecdysteroids are a family of about 200 plant steroids related in structure to the invertebrate steroid hormone 20-hydroxyecdysone. Typically, they are C27, C28 or C29 compounds possessing a 14alpha-hydroxy-7-en-6-one chromophore and A/B-cis ring fusion (5beta-H).
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Phytoecdysteroids ofRhaponticum carthamoides
Chemistry of Natural Compounds, 1987From the roots with rhizomes of the plantRhaponticum carthamoides Willd) Iljin Compositae), in addition to integristerone A, ecdysterone, polypodin B, 2-deoxyecdysterone, and 24(28)-dehydromakisterone A, we have isolated the new compounds ecdysteron3–2,3-monoacetonide (I), ecdysterone 20,22-monoacetonide (II)) and rhapisterone (III): I — C30H48O7, mp ...
U. A. Bastaev, N. K. Abubakirov
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Phytochemical Analysis, 2020
INTRODUCTION Phytoecdysteroids are analogues of arthropod steroids occurring in plants. They contribute to invertebrate deterrence. A wide diversity of ecdysteroids occurs in phytoecdysteroid-containing plant species, sometimes in high amounts ...
L. Dinan +3 more
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INTRODUCTION Phytoecdysteroids are analogues of arthropod steroids occurring in plants. They contribute to invertebrate deterrence. A wide diversity of ecdysteroids occurs in phytoecdysteroid-containing plant species, sometimes in high amounts ...
L. Dinan +3 more
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Phytoecdysteroids of plants of the genusSilene
Chemistry of Natural Compounds, 1993Ecdysteroids produced by plants of the genusSilene are considered. The discussion covers 17 species of plants, from which 45 ecdysteroids have been isolated. It has been shown that ecdysterone is the most characteristic representative of the biosynthesis of ecdysteroids in theSilene series.
Z. Saatov +2 more
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International Journal of Medical Pharmaceutical and Health Sciences
The term "ecdysteroids" (ECs) comes from the ancient Greek word ecdysis, which means "stripping" or "the shedding of an exoskeleton in insects". The first EC, ecdysone, was isolated from silkworm pupae by Butenandt and Karlson.
Lokendra Singh Rathor +5 more
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The term "ecdysteroids" (ECs) comes from the ancient Greek word ecdysis, which means "stripping" or "the shedding of an exoskeleton in insects". The first EC, ecdysone, was isolated from silkworm pupae by Butenandt and Karlson.
Lokendra Singh Rathor +5 more
semanticscholar +1 more source
2009
Phytoecdysteroids, polyhydroxylated ketosteroids, are the plant analogues of insect growth hormones. Although their role in insect molting is well characterized, their function in plants is less clear. Lacking the properties of classic plant hormones, phytoecdysteroids may be involved in plant growth and defense.
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Phytoecdysteroids, polyhydroxylated ketosteroids, are the plant analogues of insect growth hormones. Although their role in insect molting is well characterized, their function in plants is less clear. Lacking the properties of classic plant hormones, phytoecdysteroids may be involved in plant growth and defense.
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Phytoecdysteroids of Silene viridiflora
Chemistry of Natural Compounds, 2003The known ecdysteroids polipodin B, 2-deoxyecdysterone, ecdysterone, 26-hydroxypolipodin B, integristerone A, and sileneosides A and D were observed in the aerial part of Silene viridiflora L. (Caryophyllaceae). 26-Hydroxypolipodin B was observed in this species for the first time.
N. Z. Mamadalieva +3 more
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