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phlegmariurus nummulariifolius/alkaloid
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Pagina 1 a partire dal 21 risultati
Lycosquarrines A-R, Lycopodium Alkaloids from Phlegmariurus squarrosus
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Eighteen new Lycopodium alkaloids, lycosquarrines A-R (1-18), and eight known alkaloids were isolated from the aerial parts of Phlegmariurus squarrosus. Compounds 1-5 and 19, identified from natural sources for the first time, are uncommon
12α-hydroxy-N-demethyl-sauroxine, a lycodane type alkaloid from Phlegmariurus saururus.
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12α-hydroxy-N-demethyl-sauroxine (1), another new Lycopodium alkaloid from the Lycodane group, was isolated from Phlegmariurus saururus (Lam.) B. Øllg. (Lycopodiaceae). Elucidation of the chemical structure and relative stereochemistry were stated by spectroscopic data and chemical correlation. In
An alkaloid extract obtained from Phlegmariurus Saururus induces neuroprotection after status epilepticus.
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BACKGROUND
The brain is exposed to many excitotoxic insults that can lead to neuronal damage. Among these, Epilepsy is a neurological disease that affects a large percentage of world population and is commonly associated with cognitive disorders and excitotoxic neuronal death. Most experimental
Four new fawcettimine-related alkaloids from Phlegmariurus squarrosus.
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Four new fawcettimine-related alkaloids (1-4), together with 17 known ones, were isolated from club moss Phlegmariurus squarrosus. Notably, compound 1 was the derivative of lycoflexine with an unprecedented additional methyl group at C-17. Their structures were determined by extensive spectroscopic
New Lycopodium alkaloids from Phlegmariurus squarrosus.
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Four new Lycopodium alkaloids (1-4), together with 15 known ones, were isolated from club moss Phlegmariurus squarrosus. Notably, 8α-hydroxylycojapodine A (1) was the first derivative of lycojapodine A (5) which was a novel C16N-type Lycopodium alkaloid with an unprecedented 6/6/6/7 tetracyclic ring
Two new Lycopodium alkaloids from Phlegmariurus phlegmaria (L.) Holub.
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Two new Lycopodium alkaloids, 4β-hydroxynankakurine B (1) and Δ(13,N),N(α)-methylphlegmarine-N(β)-oxide (2), together with three known analogues, lycoposerramine E (3), nankakurine B (4) and lobscurinol (5), were isolated from Phlegmariurus phlegmaria. Their structures were established by mass
Phleghenrines A-D and Neophleghenrine A, Bioactive and Structurally Rigid Lycopodium Alkaloids from Phlegmariurus henryi.
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Five new Lycopodium alkaloids, phleghenrines A-D (1-4) and neophleghenrine A (5), were isolated from Phlegmariurus henryi (Baker) Ching. The structures and absolute configurations of 1-5 were determined using extensive spectroscopic data coupled with computational calculations and revealed 1-4
Five new Lycopodium alkaloids from the aerial parts of Phlegmariurus henryi.
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A series of new Lycopodium alkaloids, namely 1-epi-malycorin A (1), 1-epi-17S-hydroxymalycorin A (2), 6α-hydroxyphlegmariurine A (3), 2S,4R-dihydroxyfawcettimine (4), and 16-hydroxylycodine (5), together with 24 known ones, have been isolated from the club moss Phlegmariurus henryi. The structures
[The structure determination of a new alkaloid phlegmariuine-N by long-range two-dimensional and NOE difference NMR spectroscopy].
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A new alkaloid, phlegmariuine-N, was isolated from Phlegmariurus fordii (Baker) Ching. In the present work, a technique of long-range 1H-1H and 13C-1H COSY in combination with NOE difference spectroscopy has been successfully used to connect the spin systems separated by quatermary carbons and
A new Lycopodium alkaloid from Phlegmariurus fargesii.
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OBJECTIVE
To investigate the chemical constituents from the whole plants of Phlegmariurus fargesii.
METHODS
Compounds were isolated by repeated silica gel column chromatography. Their structures were elucidated by spectroscopic methods and chemical correlation. The acetylcholinesterase (AChE)
Identification of Lycopodium Alkaloids Produced by an Ultraviolet-Irradiated Strain of Paraboeremia, an Endophytic Fungus from Lycopodium serratum var. longipetiolatum.
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12- epi-Lycopodine (1), a Lycopodium alkaloid, along with lycopodine (2) and huperzine A (3), were discovered in the mycelium of Paraboeremia sp. Lsl3KI076, a UV-irradiated strain of Paraboeremia sp. Lsl3, an endophytic fungus from Lycopodium serratum Thunb. var. longipetiolatum Spring.
Phlegmadine A: A Lycopodium Alkaloid with a Unique Cyclobutane Ring from Phlegmariurus phlegmaria.
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Phlegmadine A (1), a Lycopodium alkaloid with a unique cyclobutane ring and featuring a complex tetracyclo[4.2.2.03,8.03,10]decane-bridged system, together with three biogenetically related known compounds, was isolated from the Phlegmariurus phlegmaria.
Comparison of 454-ESTs from Huperzia serrata and Phlegmariurus carinatus reveals putative genes involved in lycopodium alkaloid biosynthesis and developmental regulation.
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BACKGROUND
Plants of the Huperziaceae family, which comprise the two genera Huperzia and Phlegmariurus, produce various types of lycopodium alkaloids that are used to treat a number of human ailments, such as contusions, swellings and strains. Huperzine A, which belongs to the lycodine type of
Carinatines A and B, Lycopodium Alkaloids from Phlegmariurus carinatus.
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Carinatine A (1), a C16N2-type Lycopodium alkaloid possessing a 5/6/6/6 ring system formed by a new C-4/C-12 bond, and carinatine B (2), the first derivative of lycojaponicumin C, along 16 known compounds, were isolated from the whole plant of Phlegmariurus carinatus. Their structures were
[Studies on alkaloids of Phlegmariurus fordii (Baker) Ching].
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