Phlegmadine A: A Lycopodium Alkaloid with a Unique Cyclobutane Ring from Phlegmariurus phlegmaria

2019 ◽  
Vol 84 (17) ◽  
pp. 11301-11305 ◽  
Author(s):  
Zhi-Jun Zhang ◽  
Chen Wang ◽  
Xing-De Wu ◽  
Yan Huang ◽  
Wen-Xia Zhou ◽  
...  
Keyword(s):  
Lycopodium Alkaloid ◽  
Cyclobutane Ring

Diphaladine A, a New Lycopodium Alkaloid from Diphasiastrum complanatum (Lycopodiaceae)

2010 ◽  
Vol 31 (1) ◽  
pp. 93-96 ◽  
Author(s):  
Xing-De WU ◽  
Juan HE ◽  
Gang XU ◽  
Li-Yan PENG ◽  
Liu-Dong SONG ◽  
...  
Keyword(s):  
Lycopodium Alkaloid

Isopalhinine A, a Unique Pentacyclic Lycopodium Alkaloid from Palhinhaea cernua

2013 ◽  
Vol 15 (14) ◽  
pp. 3570-3573 ◽  
Author(s):  
Liao-Bin Dong ◽  
Xiu Gao ◽  
Fei Liu ◽  
Juan He ◽  
Xing-De Wu ◽  
...  
Keyword(s):  
Lycopodium Alkaloid

Huperminone A, a novel C16N-type Lycopodium alkaloid from Huperzia phlegmaria

2013 ◽  
Vol 54 (12) ◽  
pp. 1593-1595 ◽  
Author(s):  
Yusuke Hirasawa ◽  
Yuri Kato ◽  
Chin Piow Wong ◽  
Nahoko Uchiyama ◽  
Yukihiro Goda ◽  
...  
Keyword(s):  
Lycopodium Alkaloid

LYCOPODIUM ALKALOIDS: XV. STRUCTURE AND MASS SPECTRA OF SOME MINOR ALKALOIDS OF L. FLABELLIFORME

1964 ◽  
Vol 42 (11) ◽  
pp. 2456-2466 ◽  
Author(s):  
S. N. Alam ◽  
K. A. H. Adams ◽  
D. B. MacLean
Keyword(s):  
Mass Spectra ◽  
Physical Evidence ◽  
Lycopodium Alkaloid ◽  
Lycopodium Alkaloids

Hydroxy-des-N-methyl-α-obscurine, C16H24O2N2, has been isolated from L. flabelliforme and a structure assigned to it on the basis of physical evidence. A structure is assigned to Lycopodium alkaloid L.5, which we have named flabellidine, on the basis of physical evidence and its chemical derivation from lycodine. The mass spectra of hydroxy-des-N-methyl-α-obscurine, flabellidine, and flabelline are discussed.

scholarly journals One-step synthesis of Lycopodium alkaloid (-)-huperzine W via Suzuki-Miyaura coupling

2012 ◽  
Vol 2 (6) ◽  
pp. 255-257 ◽  
Author(s):  
Tao Xu ◽  
Shi-Zhi Jiang ◽  
Huai-Rong Luo ◽  
Yu-Rong Yang
Keyword(s):  
Lycopodium Alkaloid ◽  
One Step

γ- and δ-epoxy sulfones. Formation of different ring-sized products upon reaction with CH3MgI or LiN[CH(CH3)2]2

1981 ◽  
Vol 59 (10) ◽  
pp. 1415-1424 ◽  
Author(s):  
John M. Decesare ◽  
Bernard Corbel ◽  
Tony Durst ◽  
John F. Blount
Keyword(s):  
Structure Determination ◽  
Grignard Reagent ◽  
Lithium Diisopropylamide ◽  
X Ray ◽  
Iodide Ion ◽  
Epoxide Opening ◽  
Cyclobutane Ring

γ-Epoxy sulfones in which the epoxide function is terminal yield cyclopropylmethanol derivatives on reaction with methyllithium or lithium diisopropylamide. In contrast, treatment of these epoxides with two equivalents of CH3MgI gives only cis-3-phenylsulfonylcyclobutanols. The cis-relationship between the OH and sulfonyl groups was proven in one instance by an X-ray structure determination. Internal γ-epoxy sulfones yield cyclopropylmethanols with all bases studied. All δ-epoxy sulfones studied furnished cis-3-phenylsulfonylcyclopentanols upon reaction with the Grignard reagent. These same epoxides gave either cyclopentanols or noncyclic products upon reaction with LDA; no cyclobutane ring containing products were obtained contrary to the expectations based on Stork's results with the corresponding epoxy nitriles (ref. 2). The mechanism of the Grignard-mediated reaction involves epoxide opening by iodide ion, α-sulfonyl Grignard formation, and, finally, cyclization. When LDA or CH3Li is used the products are formed by an intramolecular SN2 opening of the epoxide by an α-lithio sulfone.

Japonisine A, a fawcettimine-type Lycopodium alkaloid with an unusual skeleton from Lycopodium japonicum Thunb

Fitoterapia ◽  
2021 ◽  
pp. 105069
Author(s):  
Xi Wang ◽  
Fuqian Wang ◽  
Jun Wu ◽  
Shun-Qing Chen ◽  
Cheng-Shi Jiang ◽  
...  
Keyword(s):  
Lycopodium Alkaloid ◽  
Lycopodium Japonicum
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