Some new Lycopodium alkaloids

1989 ◽  
Vol 67 (6) ◽  
pp. 1077-1086 ◽  
Author(s):  
William A. Ayer ◽  
Gertrude C. Kasitu
Keyword(s):  
Lycopodium Alkaloid ◽  
Lycopodium Alkaloids ◽  
Northern Alberta

The alkaloids of the club moss Lycopodiumobscurum L., collected in Northern Alberta, have been investigated. The known alkaloids lycopodine, lycodine, clavolonine, dihydrolycopodine, O-acetyldehydrolycopodine, flabelliformine, β-lofoline, lycofoline, and des-N-methyl-α-obscurine were isolated and identified, as were the known compounds des-N-methyl-β-obscurine and acrifolinol. α-Obscurine and β-obscurine were not detected. The structures of the previously unreported alkaloids hydroxypropyllycodine (9a), lyconnotinol (11a), lobscurinol (19a), epilobscurinol (19b), and acetyllobscurinol (19c) are presented. Hydroxypropyllycodine (9a) is the first 19-carbon Lycopodium alkaloid reported to date. Its possible biogenetic significance is discussed. The isolation of obscurinine (14) and isoobscurinine (15) are reported and the preparation of obscurinine (15) by treatment of lobscurine (18) with ammonia is described. It is suggested that obscurinine and isoobscurinine are artefacts produced during the isolation process. Keywords: alkaloids, Lycopodium alkaloids, obscurinine, Lycopodiumobscurum, biogenesis.

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.

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

scholarly journals Rubella Immunity among Pregnant Women in a Canadian Provincial Screening Program

2009 ◽  
Vol 20 (3) ◽  
pp. 73-77 ◽  
Author(s):  
Mark J Kearns ◽  
Sabrina S Plitt ◽  
Bonita E Lee ◽  
Joan L Robinson
Keyword(s):  
Public Health ◽  
Screening Program ◽  
Study Data ◽  
Test Results ◽  
Childbearing Age ◽  
Younger Women ◽  
The Public ◽  
Health Significance ◽  
Health Database ◽  
Northern Alberta

BACKGROUND: There are limited recent data on rubella immunity in women of childbearing age in Canada. In the present paper, the proportion of rubella seroreactivity and redundant testing (testing of women previously seropositive when tested by the same physician) in the Alberta prenatal rubella screening program were studied.METHODS: In the present retrospective observational study, data on all specimens submitted for prenatal screening in Alberta between August 2002 and December 2005 were extracted from the Provincial Laboratory for Public Health database. The proportion of rubella screening and immunoglobulin G (IgG) seroreactivity were determined. Demographic variables were compared between rubella seroreactors and nonseroreactors. The proportion of redundant testing was determined.RESULTS: Of 159,046 prenatal specimens, 88.3% (n=140,473) were screened for rubella immunity. In total, 8.8% of specimens tested negative for rubella IgG. Younger women (23.2% of women younger than 20 years of age versus 4.7% of women between 35 and 39 years of age; P<0.001) and women from northern Alberta (11.9% versus 8.1% [overall]; P<0.001) were significantly more likely to have seronegative specimens. Of the 20,044 women who had multiple rubella immunity screenings, 88.1% (n=17,651) had multiple positive test results. In total, 20.7% of the 42,274 specimens submitted from women with multiple screenings were deemed redundant.DISCUSSION: Younger women were most likely to be seronegative for rubella. The public health significance of women entering their childbearing years with low or undetectable rubella IgG levels remains to be determined. A large number of women with documented rubella immunity were unnecessarily retested.

VARIATION AMONG BRITISH COLUMBIA AND NORTHERN ALBERTA POPULATIONS OF RASPBERRIES, RUBUS IDAEUS SUBSPP. STRIGOSUS MICHX.

1972 ◽  
Vol 52 (6) ◽  
pp. 1067-1072 ◽  
Author(s):  
M. C. J. VAN ADRICHEM
Keyword(s):  
British Columbia ◽  
Seed Weight ◽  
Fruit Weight ◽  
Winter Hardiness ◽  
Rubus Idaeus ◽  
Specific Character ◽  
Positive Correlation ◽  
Total Seed ◽  
Northern Alberta ◽  
Number Of Seeds

Several population samples of Rubus idaeus subspp. strigosus Michx. (raspberries) were collected in British Columbia and northern Alberta and a number of characters were studied and compared with the cultivar Trent. Significant differences between populations were found for cane length, number of buds per cane, percentage of buds growing, number of inflorescences and flowers per bud, fruit and seed weight. There was a positive correlation between the total seed weight and the number of seeds, and between the total seed and fruit weight. No distinct types could be established based on location or elevation. None of the populations showed significantly better winter hardiness than the cultivar Trent, and although some had a specific character that was superior, none was found to have overall superiority.

scholarly journals Telephone consultations with otolaryngology – head and neck surgery reduced emergency visits and specialty consultations in northern Alberta

2020 ◽  
Vol 49 (1) ◽  
Author(s):  
Peter George Jaminal Tian ◽  
Dean Eurich ◽  
Hadi Seikaly ◽  
Douglas Boisvert ◽  
John Montpetit ◽  
...  
Keyword(s):  
Head And Neck ◽  
Neck Surgery ◽  
Head And Neck Surgery ◽  
Emergency Visits ◽  
Northern Alberta

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
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