Results 61 to 70 of about 114,626,959 (164)

The determination of huperzine A in european Lycopodiaceae species by HPLC-UV-MS

open access: yes, 2006
A rapid qualitative HPLC-UV-MS method was developed for the detection of huperzine A in Lycopodiaceac species. HPLC coupled with mass spectrometry experiments allowed the identification of the alkaloid and enabled targeted analysis of complex matrices ...
Borloz, A.   +2 more
core   +1 more source

Synthesis of 7-desmethyl analogs of (+)- and (-)-huperzine A

open access: yes, 2015
The natural alkaloid (-)-huperzine A is an inhibitor of AChE and has been demonstrated to exert neuroprotection and to possess beneficial effects on other CNS related disorders. In this manuscript, we report the synthesis of the analogs of huperzine A in
PIERONI, Marco, Tipparaju, Suresh K.
core   +1 more source

Structural analogs of huperzine A improve survival in guinea pigs exposed to soman

open access: yes, 2013
Chemical warfare nerve agents such as soman exert their toxic effects through an irreversible inhibition of acetylcholinesterase (AChE) and subsequently glutamatergic function, leading to uncontrolled seizures.
Hendra Gunosewoyo (1648369)   +6 more
core   +2 more sources

Huperzine A for Alzheimer's disease: a systematic review and meta-analysis of randomized clinical trials.

open access: yes, 2013
BackgroundHuperzine A is a Chinese herb extract used for Alzheimer's disease. We conducted this review to evaluate the beneficial and harmful effect of Huperzine A for treatment of Alzheimer's disease.MethodsWe searched for randomized clinical trials ...
Yuyi Wang (462133)   +7 more
core   +1 more source

Huperzine A: A nootropic agent in the shade [Huperzin A: Gölgede Kalmış bir Nootropik Ajan]

open access: yes, 2019
Huperzine A is a sesquiterpene alkaloid found in the chemical composition of the medical plant Huperzia serrata. Huperzine A has attracted the attention of neuroscientists after the discovery of its strong and selective inhibitory activity on the ...
Turan, Yücel, N., Can, Özgür Devrim
core  

Huperzine A decreased mitochondrial accumulation of Aβ42.

open access: yes, 2015
A. The schematic diagram of the proportion of mitochondria-enriched fraction Aβ42 in total intracellular Aβ42. B. Effect of huperzine A on the level of Aβ42 in different subcellular fractions (N = 4).
Hai Yan Zhang (589189)   +7 more
core   +1 more source

A concise and convergent (formal) total synthesis of huperzine A

open access: yes, 2007
The first convergent synthesis of the tricyclic skeleton of huperzine A is described and includes, as the key step, an efficient regioselective intramolecular Heck reaction of 2-(tert-butyldimethylsillyoxymethyl)-6-(2-methoxy-5-bromopyridin-6-yl ...
Kelly, S., Lucey, C., Mann, John
core   +1 more source

A palladium-catalyzed synthetic approach to new huperzine analogues modified at the pyridone ring.

open access: yes, 2003
The synthesis of two new Huperzine A analogues is reported. Both products present an amino substituted benzo-fused system in place of the pyridone ring of the natural alkaloid.
BELLEBAUN K.   +8 more
core   +1 more source

Isolation and purification of Huperzine A

open access: yes浙江大学学报. 农业与生命科学版, 2002
Technique of isolation and purification of Huperzine A from Huperzia serrata (Thunb) Trev. was studied in this paper. To get rid of some pigments and other impurities, some of chemical techniques for separation such as extraction with organic acid, absorption with charcol and re-crystallization with chloroform were employed. The results suggested that:
SHEN Sheng-rong   +3 more
openaire   +1 more source

The Clinical Analysis of Combined Effects of Huperzine A and Memantine for Alzheimer’s Disease

open access: yes
The purpose of this study was to evaluate the clinical effects of a combination of Huperzine A and memantine for the treatment of Alzheimer’s disease (AD).
Maolong Gao, Shouzi Zhang, Qinyun Li
core   +1 more source

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