Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Christopher O. Fakunle"'
Publikováno v:
Tetrahedron. 56:9647-9653
Anhydrobisfarnesol has been isolated from the latex of Euphorbia lateriflora and assigned structure 4 on the basis of its spectroscopic properties. Its structure has been confirmed by synthesis using a photochemical isomerisation procedure. A similar
Publikováno v:
ChemInform. 21
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :727
The residual uncertainty in the structure of euphorianin, an ingol diterpenoid from the latex of Euphorbia poisonii, has been resolved by nuclear Overhauser enhancement difference experiments which revealed the configuration at C-19 to be S. The 1H a
Publikováno v:
Journal of Natural Products. 52:279-283
The structure of enukokurin [1], a novel jatrophane ester from the latex of Euphorbia lateriflora, has been assigned on the basis of its 1H and 13C nmr spectroscopic properties. The positions of its ester linkages were determined using 2D δC/δH lon
Autor:
Gerhard G. Habermehl, D.E.U. Ekong, Hans Jörg Lindner, Christopher O. Fakunle, Joseph I. Okogun
Publikováno v:
Zeitschrift für Naturforschung B. 42:243-247
The conversion of euphorianin to deacetyldehydroeuphorianin which was used in an X-ray crystal structure analysis is described. A new pentacyclic structure related to ingol tetraacetate is described for euphorianin.
Autor:
Gerhard G. Habermehl, Hans Jörg Lindner, Christopher O. Fakunle, Joseph I. Okogun, D.E.U. Ekong
Publikováno v:
ChemInform. 18
Autor:
David S. Rycroft, Masao Toyota, Joseph D. Connolly, Christopher O. Fakunle, Yoshinori Asakawa
Publikováno v:
ChemInform. 18
Nuclear Overhauser effect (n.O.e.) difference spectroscopy has shown that the structure of the liverwort sesquiterpenoid pinguisanin is 2α,7α-epoxypinguisane (2). The 13C n.m.r. resonances have been assigned, mainly by two-dimensional (2D) direct
Publikováno v:
Chemischer Informationsdienst. 6
Autor:
Joseph D. Connolly, Lucas B. Sondengam, Christopher O. Fakunle, Thomas K. Njimi, Samuel F. Kimbu, Bonaventure T. Ngadjui
Publikováno v:
Journal of Natural Products. 50:230-231
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :1352
Evidence is presented for the structures of a new protomeliacin (melianin A) and the related melianin B, which co-occur with gedunin (or 7-deacetoxy-7-oxogedunin), nimbolin A, fraxinellone, and cycloeucalenone in the wood extracts of Melia azedarach.