Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Albert N. Tackie"'
Publikováno v:
Magnetic Resonance in Chemistry. 37:529-537
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59be2a4b4b910450ff07784cd5adb2e1
https://doi.org/10.1002/(sici)1097-458x(199908)37:8<529::aid-mrc486>3.0.co
https://doi.org/10.1002/(sici)1097-458x(199908)37:8<529::aid-mrc486>3.0.co
Autor:
Maged H. M. Sharaf, Albert N. Tackie, James R. Blinn, Gary E. Martin, Paul L. Schiff, Chad E. Hadden
Publikováno v:
Magnetic Resonance in Chemistry. 37:1-6
Direct and long-range 1H–15N correlations for cryptolepinone and its N5-oxide as a mixture in DMSO-d6 were determined using a combination of 1H–15N GHSQC and GHMBC experiments. The 15N chemical shifts of cryptolepinone in the mixture were compara
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a8fd284cc432bed1dca7590e2d56922
https://doi.org/10.1002/(sici)1097-458x(199901)37:1<1::aid-mrc391>3.0.co
https://doi.org/10.1002/(sici)1097-458x(199901)37:1<1::aid-mrc391>3.0.co
Publikováno v:
Journal of Heterocyclic Chemistry. 35:1365-1369
An indolo[3,2-b]quinoline alkaloid bearing an N-methyl substituent at N5, and an oxygen moiety at the 11-position has been variously described as both cryptolepinone and 11-hydroxycryptolepine by independent research groups. The structure of this alk
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d09ae34c87ca514c9fc51c153e0fbf45
https://doi.org/10.1002/jhet.5570350624
https://doi.org/10.1002/jhet.5570350624
Autor:
Ronald C. Crouch, Gary E. Martin, Charles H. Phoebe, Doug Minick, Paul L. Schiff, Maged H. M. Sharaf, Robert L. Johnson, Albert N. Tackie, C. Webster Andrews
Publikováno v:
Journal of Heterocyclic Chemistry. 33:789-797
The isolation and structure determination of cryptomisrine, a novel indolo[3,2-b]quinoline dimeric alkaloid obtained from extracts of the roots of the Ghanaian medicinal plant Cryptolepis sanguinolenta is reported. The structure determination was mad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41fb1ac07b89b8ca933510497a3de584
https://doi.org/10.1002/jhet.5570330343
https://doi.org/10.1002/jhet.5570330343
Publikováno v:
Journal of Heterocyclic Chemistry. 33:239-243
The roots of the indigenous West African shrub Cryptolepis sanguinolenta have proved to be a rich source of indoloquinoline alkaloids. To date, all of the alkaloids isolated have been analogs of indolo[3, 2-b]quinoline. We now wish to report examples
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b108bf9856ef0e2c71a9ec21da440b2d
https://doi.org/10.1002/jhet.5570330204
https://doi.org/10.1002/jhet.5570330204
Autor:
John P. Shockcor, Layne Howard, Carol Meyers, Albert N. Tackie, Chad E. Hadden, Robert L. Johnson, Charles H. Phoebe, C. Webster Andrews, Maged H. M. Sharaf, Ronald C. Crouch, Susan K. Wrenn, Ann O. Davis, Gary E. Martin, Doug Minick, Paul L. Schiff
Publikováno v:
Magnetic Resonance in Chemistry. 33:767-778
Cryptolepis sanguinolenta (Lindl.) Schlechter (Asclepiadaceae), a shrub indigenous to West Africa, has been employed by traditional healers in the treatment of various fevers, including malaria. Column chromatography of the alkaloid fraction obtained
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c4e3a652ee8f25bf4e08b7c798b1b97
https://doi.org/10.1002/mrc.1260331003
https://doi.org/10.1002/mrc.1260331003
Autor:
Ann O. Davis, Ronald C. Crouch, Gary E. Martin, Paul L. Schiff, Albert N. Tackie, Charles H. Phoebe, C. Webster Andrews, Maged H. M. Sharaf
Publikováno v:
Journal of Heterocyclic Chemistry. 32:1631-1636
The structure of a new indolobenzazepine alkaloid, homocryptolepinone, isolated from extracts of the roots of the indigenous Ghanaian medicinal plant Cryptolepis sanguinolenta, is reported. The structure was determined using mass spectrometric, one-d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffb61f2603f913d3d5c24542b3a40204
https://doi.org/10.1002/jhet.5570320537
https://doi.org/10.1002/jhet.5570320537
Autor:
Paul L. Schiff, Albert N. Tackie, Timothy D. Spitzer, Gary E. Martin, Gilbert L. Boye, Maged H. M. Sharaf, Ronald C. Crouch
Publikováno v:
Journal of Heterocyclic Chemistry. 28:2065-2070
The reisolation of the indoloquinoline alkaloid quindoline (also known as norcryptolepine) from Cryptolepis sanguinolenta is reported. The structure was unequivocally confirmed by two-dimensional nmr methods; the proton and carbon spectra were assign
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34044ca2687f26f404684677c8736865
https://doi.org/10.1002/jhet.5570280850
https://doi.org/10.1002/jhet.5570280850
Autor:
Albert N. Tackie, Russell H. Robins, Paul L. Schiff, Maged H. M. Sharaf, Jane E. Guido, Gary E. Martin
Publikováno v:
Journal of natural products. 61(5)
Quantities of material required for structural analysis were reduced substantially following the introduction of 3 mm microinverse and microdual NMR probes in 1992. We now report the first very low-level results obtainable with a new 1.7 mm submicro-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::186969c474dbefe5595aea878b1a308a
https://pubmed.ncbi.nlm.nih.gov/9599248
https://pubmed.ncbi.nlm.nih.gov/9599248
Autor:
Kirill Blinov, Mikhail Elyashberg, Eduard R. Martirosian, Sergey G. Molodtsov, Antony J. Williams, Albert N. Tackie, Maged M. H. Sharaf, Paul L. Schiff, Ronald C. Crouch, Gary E. Martin, Chad E. Hadden, Jane E. Guido, Kent A. Mills
Publikováno v:
Magnetic Resonance in Chemistry; Aug2003, Vol. 41 Issue 8, p577, 8p