Extracts from the fruits of Piper guineense schum. and thonn von Okogun, Joseph I., Ekong, Donald E. U.

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The meliacins (limonoids): minor constituents of Khaya anthotheca: reduction of the meliacins with zinc–copper couple von Ekong, Donald E. U., Okogun, Joseph I., Sondengam, B. Lucas

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Chemistry of the meliacins (limonoids). The structure of melianin A, a new protomeliacin from Melia azedarach von Okogun, Joseph I., Fakunle, Christopher O., Ekong, Donald E. U., Connolly, Joseph D.

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AFRICAN MEDICINAL PLANTS UNDER THE MICROSCOPE von Ekong, Donald E U

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X-Ray Crystal Structure Analysis of Deacetyldehydroeuphorianin: The Correct Structure of the Novel Pentacyclic Macrocyclic Diterpene, Euphorianin von Okogun, Joseph I., Fakunle, Christopher O., Ekong, Donald E. U., Lindner, Hans J., Habermehl, Gerhard G.

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New antisickling agent 3,4-dihydro-2,2-dimethyl-2H-1 benzopyran-6-butyric acid von EKONG, DONALD E. U., OKOGUN, JOSEPH I., ENYENIHI, VICTORIA U., BALOGH-NAIR, VALERIA, NAKANISHI, KOJI, NATTA, CLAYTON

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African medicinal plants under the microscope von Ekong, Donald E U

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Biosynthesis of nimbolide from [2- 14C,(4 R)4- 3H 1] mevalonic acid lactone in the leaves of Azadirachta indica von EKONG, D. E. U, IBIYEMI, S. A

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