Results 171 to 180 of about 2,076 (205)

Huperzine A from Huperzia species—An ethnopharmacolgical review

Journal of Ethnopharmacology, 2007
Huperzine A (HupA), isolated originally from a traditional Chinese medicine Qiang Ceng Ta, whole plant of Huperzia serrata (Thunb. ex Murray) Trev., a member of the Huperziaceae family, has attracted intense attention since its marked anticholinesterase activity was discovered by Chinese scientists.
Xiaoqiang, Ma, Changheng, Tan, Dayuan, Zhu, David R, Gang, Peigen, Xiao   +4 more
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A novel alkaloid from Huperzia crispate

Journal of Asian Natural Products Research, 2008
A novel alkaloid, hupcrispatine (1), has been isolated from the unique Chinese species Huperzia crispate Ching. The structure of hupcrispatine has been elucidated as 9-amino-6-methyl-3-quinolone on the basis of spectral evidence.
Gang, Pei, Gui-Xia, He, Fang-Lu, Du, Dao-Song, Jiang   +3 more
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Lycopodium Alkaloids from Huperzia serrata

Helvetica Chimica Acta, 2007
AbstractThree new Lycopodium alkaloids, 2‐chlorohuperzine E (1), huperzines E′ (2), and F′ (3), along with two known compounds, huperzines E and F, were isolated from Huperzia serrata (Thunb.) Trev. Their structures were elucidated by spectroscopic methods.
Heng‐Bin Wang, Chang‐Heng Tan, Jun‐Jie Tan, Ming‐Yao Gao, Yi‐Ming Li, Shan‐Hao Jiang, Da‐Yuan Zhu   +6 more
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Anticholinesterase activity in an alkaloid extract of Huperzia saururus

Phytomedicine, 2004
Huperzia saururus (Lam.) Trevis. (Lycopodiaceae) is used widely in Argentinian traditional medicine as an aphrodisiac and for memory improvement. An aqueous extract from the aerial parts was obtained by decoction, revealing the presence of alkaloids, among other constituents. By partition with organic solvent in alkaline media, alkaloids were extracted
M G, Ortega, A M, Agnese, J L, Cabrera
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New Epoxyserratanes from Huperzia serrata

Planta Medica, 2003
Three new serratane-type epoxytriterpenoids were isolated from the whole plant of Huperzia serrata. The structures of these new compounds were characterized as 14 beta,15 beta-epoxy-3 beta-hydroxyserratan-21 beta-ol (1), 14 beta,15 beta-epoxy-3 beta-hydroxyserratan-21alpha-ol (2), and 14 beta,15 beta-epoxy-3 beta-hydroxyserratan-21alpha-ol-3 beta-O ...
Hui, Zhou, Shan-Hao, Jiang, Chang-Heng, Tan, Bao-De, Wang, Da-Yuan, Zhu   +4 more
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Huperzia saururus, activity on synaptic transmission in the hippocampus

Journal of Ethnopharmacology, 2006
Huperzia saururus (Lam.) Trevis. (Lycopodiaceae) known as cola de quirquincho is used in folk medicine to improve memory. The cholinergic neurons of the basal forebrain, including those in the medial septum, and in the vertical limbs of the diagonal band of Broca and the nucleus basalis of Meynert, provide a major source of cholinergic enervation of ...
M G, Ortega, M G, Vallejo, J L, Cabrera, M F, Pérez, R S, Almirón, O A, Ramírez, A M, Agnese   +6 more
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Lycopodiumalkaloids fromHuperzia serrata

Journal of Asian Natural Products Research, 2010
A new lycopodane-type Lycopodium alkaloid, 6α-hydroxy-5,15-oxide-lycopodane (1), and seven known alkaloids were isolated from the whole plants of Huperzia serrata. Their structures were elucidated by means of spectroscopic methods. 12-Deoxyhuperzine O (2) was reported as a naturally occurring alkaloid for the first time, and showed an antagonist effect
Yan-Fang, Yang, Shi-Jin, Qu, Kai, Xiao, Shan-Hao, Jiang, Jun-Jie, Tan, Chang-Heng, Tan, Da-Yuan, Zhu   +6 more
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Selagoline, A new Alkaloid fromHuperzia Selago

Natural Product Research, 2004
A new natural product, named selagoline, and two known alkaloids, huperzine A and serratidine, were isolated from Huperzia selago (Lycopodiaceae) collected in Iceland. Their structures were determined using 600 and 800MHz one- and two-dimensional NMR methods supported by Fourier-transform mass spectrometry. Possible role of selagoline as a precursor of
Stærk, Dan, Larsen, Jesper, Larsen, Line A., Olafsdottir, Elin S., Witt, Matthias, Jaroszewski, Jerzy W.   +5 more
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Serratane-type Triterpenoids fromHuperzia Serrata

Natural Product Research, 2004
Sixteen serratane-type triterpenoids including three new compounds, 14beta,15beta-epoxyserratan-3beta,21beta,29-triol (1), serrat-14-en-3beta,21beta,29-triol (2) and serrat-14-en-3alpha,21beta,24,29-tetraol (3), were isolated from the whole plant of Huperzia serrata (Thunb) Trev.
Hui, Zhou, Yun-Sen, Li, Xiao-Tian, Tong, Hui-Qing, Liu, Shan-Hao, Jiang, Da-Yuan, Zhu   +5 more
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Sauroine—a novel Lycopodium alkaloid from Huperzia saururus

Tetrahedron Letters, 2004
A novel Lycopodium alkaloid, sauroine (7,8-dihydroxylycopodine, 1) was isolated from the aerial parts of the medicinal species Huperzia saururus. The structure and relative stereochemistry of 1 were elucidated on the basis of its spectral data.
Maria Gabriela Ortega, Alicia Mariel Agnese, Jose Luis Cabrera   +2 more
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