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1

Biflavonoids from Ochna afzelii

Dieudonné Emmanuel Pegnyemb, Raphael Ghogomu Tih, Beibam Lucas Sondengam, Alain Blond, Bernard Bodo

Journal:

Year:

2001

Language:

english

File:

PDF, 125 KB

english, 2001

2

Two Biflavonoids from Ouratea flava Stem Bark

Josephine Ngo Mbing, Dieudonne Emmanuel Pegnyemb, Raphael Ghogomu Tih, Beibam Lucas Sondengam, Alain Blond, Bernard Bodo

Journal:

Year:

2003

File:

PDF, 64 KB

2003

3

Flavonoids of Ochna afzelii.

Dieudonne Emmanuel Pegnyemb, Raphael Ghogomu Tih, Beibam Lucas Sondengam, Alain Blond, Bernard Bodo

Journal:

Year:

2004

File:

PDF, 81 KB

2004

4

Veprisilone, a prenylated 2-quinolone, and limonin from Vepris louisii

J.Foyere Ayafor, B.Lucas Sondengam, B.Tchaleu Ngadjui

Journal:

Year:

1982

Language:

english

File:

PDF, 206 KB

english, 1982

5

Myrianthinic acid: A new triterpenoid from Myrianthus arboreus

F. Ngninzeko Ngounou, David Lontsi, B.Lucas Sondengam

Journal:

Year:

1988

Language:

english

File:

PDF, 267 KB

english, 1988

6

Pachypophyllin and pachypostaudins A and B: three bisnorlignans from pachypodanthium staudtii

Bonaventure T. Ngadjui, David Lontsi, Johnson Foyere Ayafor, B.Lucas Sondengam

Journal:

Year:

1989

Language:

english

File:

PDF, 432 KB

english, 1989

7

Tetraflavonoids of Lophira alata

Anastasie Tih, Raphael Ghogomu Tih, Beibam-Lucas Sondengam, Marie-Thérèse Martin, Bernard Bodo

Journal:

Year:

1992

Language:

english

File:

PDF, 388 KB

english, 1992

8

Pentacyclic triterpenes from Myrianthus liberecus

Azefack Leon Tapondjou, Ngninzeko Fernande Ngounou, David Lontsi, Beibam Lucas Sondengam, Marie-Therese Martin, Bernard Bodo

Journal:

Year:

1995

Language:

english

File:

PDF, 325 KB

english, 1995

9

Antimicrobial biflavonoids from the aerial parts of Ouratea sulcata

Dieudonné Emmanuel Pegnyemb, Josephine Ngo Mbing, Alex de Théodore Atchadé, Raphael Ghogomu Tih, Beiban Lucas Sondengam, Alain Blond, Bernard Bodo

Journal:

Year:

2005

Language:

english

File:

PDF, 126 KB

english, 2005

10

Biflavonoids from Ochna calodendron

Blaise Messanga, Raphael Ghogomu Tih, Beibam-Lucas Sondengam, Marie-Thérèse Martin, Bernard Bodo

Journal:

Year:

1994

Language:

english

File:

PDF, 372 KB

english, 1994

11

Two biflavonoids from Ouratea flava stem bark

Joséphine Ngo Mbing, Dieudonné Emmanuel Pegnyemb, Raphael Ghogomu Tih, Beibam Lucas Sondengam, Alain Blond, Bernard Bodo

Journal:

Year:

2003

Language:

english

File:

PDF, 220 KB

english, 2003

12

Flavonoids of Ochna afzelii

Dieudonné Emmanuel Pegnyemb, Raphael Ghogomu Tih, Beibam Lucas Sondengam, Alain Blond, Bernard Bodo

Journal:

Year:

2003

Language:

english

File:

PDF, 183 KB

english, 2003

13

Limonoids from Carapa grandiflora (meliaceae)

J. Foyere Ayafor, Samuel F. Kimbu, Bonaventure T. Ngadjui, Thomas M. Akam, Etienne Dongo, B.Lucas Sondengam, Joseph D. Connolly, David S. Rycroft

Journal:

Year:

1994

Language:

english

File:

PDF, 707 KB

english, 1994

14

The structures of vepridimerines A-D, four new dimeric prenylated quinolone alkaloids from Vepris lousii and Oricia renieri (Rutaceae)

T. Bonaventure Ngadjui, J. Foyere Ayafor, B. Lucas Sondengam, Joseph D. Connolly, David S. Rycroft, Sami A. Khalid, Peter G. Waterman, Norman M.D. Brown, Michael F. Grundon, V.N. Ramachandran

Journal:

Tetrahedron Letters

Year:

1982

Language:

english

File:

PDF, 216 KB

english, 1982

15

Biogenetic-type synthesis of vepridimerines A–D

J.Foyere Ayafor, B.Lucas Sondengam, Joseph D. Connolly, David S. Rycroft

Journal:

Tetrahedron Letters

Year:

1985

Language:

english

File:

PDF, 225 KB

english, 1985

16

Cecropiacic acid, a new pentacyclic A-ring seco triterpenoid from Musanga cecropioides

David Lontsi, B.Lucas Sondengam, J.Foyere Ayafor, Joseph D. Connolly

Journal:

Tetrahedron Letters

Year:

1987

Language:

english

File:

PDF, 217 KB

english, 1987

17

Entilins A and B, two novel heptanortriterpenoid derivatives from entandrophragma utile (meliaceae): Structural elucidation using 2d nmr long-range δC/δH correlation experiments

Jean C. Tchouankeu, Etienne Tsamo, B.Lucas Sondengam, Joseph D. Connolly, David S. Rycroft

Journal:

Tetrahedron Letters

Year:

1990

Language:

english

File:

PDF, 267 KB

english, 1990

18

Quinoline and indolopyridoquinazoline alkaloids from Vepris louisii

J.Foyere Ayafor, B.Lucas Sondengam, B.Tchaleu Ngadjui

Journal:

Year:

1982

Language:

english

File:

PDF, 473 KB

english, 1982

19

Arboreic acid: a pentacyclic triterpenoid from Myrianthus arboreus

F.Ngninzeko Ngounou, David Lontsi, J.Foyere Ayafor, B.Lucas Sondengam

Journal:

Year:

1987

Language:

english

File:

PDF, 266 KB

english, 1987

20

Synthesis of Veprisine Dimers and the Formation of a Novel Cyclic Tetramer from Precocene I

Bonaventure T. Ngadjui, Johnson F. Ayafor, A.E.Ngo Bilon, B.Lucas Sondengam, Joseph D. Connolly, David S. Rycroft

Journal:

Year:

1992

Language:

english

File:

PDF, 761 KB

english, 1992

21

Veprisine and N-methylpreskimmianine: Novel 2-quinolones from Vepris louisii

J.Foyere Ayafor, B.Lucas Sondengam, Bonaventure Ngadjui

Journal:

Tetrahedron Letters

Year:

1980

Language:

english

File:

PDF, 135 KB

english, 1980

22

A convenient reduction of activated olefins by zinc?copper couple

Sondengam, B. Lucas, Fomum, Z. Tanee, Charles, Georges, Akam, T. Mac

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

1983

Language:

english

File:

PDF, 349 KB

english, 1983

23

Limonoids of Teclea ouabanguiensis

Ayafor, Johnson Foyere, Sondengam, Beibam Lucas, Bilon, Anastasie Ngo, Connolly, Joseph Donald

Journal:

Journal of Natural Products

Year:

1986

Language:

english

File:

PDF, 275 KB

english, 1986

24

Limonoids from Clausena anisata

Ngadjui, Bonaventure Tchaleu, Ayafor, Johnson Foyere, Sondengam, Beibam Lucas, Connolly, Joseph Donald

Journal:

Journal of Natural Products

Year:

1989

Language:

english

File:

PDF, 283 KB

english, 1989

25

Complete Structural Assignments of an Ergosterol Derivative from Entandrophragma utile

Garcia, Julian, Morin, Christophe, Nyasse, Barthélémy, Sondengam, Beibam-Lucas, Tchouankeu, Jean-Claude, Tsamo, Etienne

Journal:

Journal of Natural Products

Year:

1991

Language:

english

File:

PDF, 389 KB

english, 1991

26

A New Labdane Diterpenoid from the Seeds of Aframomum daniellii

Kimbu, Samuel F., Ngadjui, Bonaventure, Sondengam, Lucas B., Njimi, Thomas K., Connolly, Joseph D., Fakunle, Christopher O.

Journal:

Journal of Natural Products

Year:

1987

Language:

english

File:

PDF, 132 KB

english, 1987

27

Minor Biflavonoids from Lophira a lata Leaves

Tih, Anastasie Ewola, Ghogomu, Raphael Tih, Sondengam, Beibam Lucas, Caux, Christelle, Bodo, Bernard

Journal:

Journal of Natural Products

Year:

2006

Language:

english

File:

PDF, 69 KB

english, 2006

28

Furoquinoline Alkaloids of Teclea ouabanguiensis

Ayafor, J. Foyere, Sondengam, B. Lucas, Bilon, A. Ngo, Tsamo, E., Kimbu, Samuel F., Okogun, Joseph I.

Journal:

Journal of Natural Products

Year:

1982

Language:

english

File:

PDF, 306 KB

english, 1982

29

A New Peptide Alkaloid from Canthium anorldianum

Dongo, Etienne, Ayafor, Johnson Foyere, Sondengam, Beibam Lucas, Connolly, Joseph Donald

Journal:

Journal of Natural Products

Year:

1989

Language:

english

File:

PDF, 196 KB

english, 1989

30

Tetranortriterpenoids and related compounds. Part 25. Two 3,4-secotirucallane derivatives and 2′-hydroxyrohitukin from the bark of Guarea cedrata (Meliaceae)

Akinniyi, John A., Connolly, Joseph D., Rycroft, David S., Sondengam, B. Lucas, Ifeadike, N. Patience

Journal:

Canadian Journal of Chemistry

Year:

1980

Language:

english

File:

PDF, 221 KB

english, 1980

31

ChemInform Abstract: MELIACINS(LIMONOIDS). MINOR CONSTITUENTS OF KHAYA ANTHOTHECA. REDUCTION OF THE MELIACINS WITH ZINC-COPPER COUPLE

EKONG, DONALD E. U., OKOGUN, JOSEPH I., SONDENGAM, B. LUCAS

Journal:

Chemischer Informationsdienst

Year:

1976

File:

PDF, 225 KB

1976

32

Oriciopsin, a new ring-D cleaved tetranortriterpenoid, and flindersiamine from Oriciopsis glaberrima

J.Foyere Ayafor, B.Lucas Sondengam, Samuel F. Kimbu, Etienne Tsamo, Joseph D. Connolly

Journal:

Year:

1982

Language:

english

File:

PDF, 210 KB

english, 1982

33

Two dinorditerpenoids from Ricinodendron heudelotii

Samuel F. Kimbu, Felix Keumedjio, Lucas B. Sondengam, Joseph D. Connolly

Journal:

Year:

1991

Language:

english

File:

PDF, 256 KB

english, 1991

34

Musangicic acid, a triterpenoid constituent of Musanga cecropioides

David Lontsi, Beibam-Lucas Sondengam, Marie-Therese Martin, Bernard Bodo

Journal:

Year:

1992

Language:

english

File:

PDF, 350 KB

english, 1992

35

Lophiroflavans B and C, tetraflavonoids of Lophira alata

Anastasie Tih, Marie-Thérèse Martin, Raphael Ghogomu Tih, Isabelle Vuidepot, Beibam-Lucas Sondengam, Bernard Bodo

Journal:

Year:

1992

Language:

english

File:

PDF, 489 KB

english, 1992

36

Five labdane diterpenoids from the seeds of Aframomum zambesiacum

Marguerite Kenmogne, Elise Prost, Dominique Harakat, Marie-José Jacquier, Michel Frédérich, Lucas B. Sondengam, Monique Zèches, Pierre Waffo-Téguo

Journal:

Year:

2006

Language:

english

File:

PDF, 138 KB

english, 2006

37

An E-ring γ-lactone pentacyclic triterpene from Myrianthus serratus

David Lontsi, Ngninzeko Fernande Ngounou, Azefack Leon Tapondjou, Beibam Lucas Sondengam, Bernard Bodo, Marie-Therese Martin

Journal:

Year:

1998

Language:

english

File:

PDF, 191 KB

english, 1998

38

Partially-acetylated dodecanyl tri- and tetra-rhamnoside derivatives from Cleistopholis glauca (annonaceae)

Pierre Tané, Johnson F. Ayafor, B.Lucas Sondengam, Catherine Lavaud, Georges Massiot, Joseph D. Connolly, David S. Rycroft, Neill Woods

Journal:

Tetrahedron Letters

Year:

1988

Language:

english

File:

PDF, 233 KB

english, 1988

39

The use of two-dimensional long-range δC/δH correlation in conjunction with the one-dimensional proton-coupled 13C NMR spectrum in the structural elucidation of ekeberginine, a new carbazole alkaloid from ekebergia senegalensis (meliaceae)

David Lontsi, J.Foyere Ayafor, B.Lucas Sondengam, Joseph D. Connolly, David S. Rycroft

Journal:

Tetrahedron Letters

Year:

1985

Language:

english

File:

PDF, 234 KB

english, 1985

40

Carapolides d, e and f, novel tetranortriterpenoids from the seeds of carapa grandiflora (meliaceae)

S.Fon Kimbu, J.Foyere Ayafor, B.Lucas Sondengam, E. Tsamo, Joseph D. Connolly, David S. Rycroft

Journal:

Tetrahedron Letters

Year:

1984

Language:

english

File:

PDF, 170 KB

english, 1984

41

Carapolide A, A novel hexanortriterpenoid and carapolides b and c, novel tetranortriterpenoids from the seeds of carapa procera (meliaceae)

S.Fon Kimbu, J.Foyere Ayafor, B.Lucas Sondengam, Joseph D. Connolly, David S. Rycroft

Journal:

Tetrahedron Letters

Year:

1984

Language:

english

File:

PDF, 204 KB

english, 1984

42

New amides from the extracts of Piper guineense

Joseph I. Okogun, B.Lucas Sondengam, Samuel F. Kimbu

Journal:

Year:

1977

Language:

english

File:

PDF, 120 KB

english, 1977

43

Steroidal Saponins from Two Species of Dracaena

Kougan, Guy Beddos, Miyamoto, Tomofumi, Tanaka, Chiaki, Paululat, Thomas, Mirjolet, Jean-François, Duchamp, Olivier, Sondengam, Beibam Lucas, Lacaille-Dubois, Marie-Aleth

Journal:

Journal of Natural Products

Year:

2010

Language:

english

File:

PDF, 137 KB

english, 2010

44

Prenylated Coumarins from the Leaves of Clausena anisata

Ngadjui, Bonaventure Tchaleu, Ayafor, Johnson Foyere, Sondengam, Beibam Lucas, Connolly, Joseph Donald

Journal:

Journal of Natural Products

Year:

1989

Language:

english

File:

PDF, 297 KB

english, 1989

45

The meliacins (limonoids): minor constituents of Khaya anthotheca: reduction of the meliacins with zinc?copper couple

Ekong, Donald E. U., Okogun, Joseph I., Sondengam, B. Lucas

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

1975

Language:

english

File:

PDF, 680 KB

english, 1975

46

The structure of a labdane dialdehyde from Afromomum daniellii(Zingiberaceae)

Kimbu, Samuel F., Njimi, Thomas K., Sondengam, B. Lucas, Akinniyi, John A., Connolly, Joseph D.

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

1979

Language:

english

File:

PDF, 221 KB

english, 1979

47

Tetranortriterpenoids and related compounds. Part 26. Tecleanin, a possible precursor of limonin, and other new tetranortriterpenoids from Teclea grandifolia Engl. (Rutaceae)

Ayafor, J. Foyere, Sondengam, B. Lucas, Connolly, Joseph D., Rycroft, David S., Okogun, Joseph I.

Journal:

Journal of the Chemical Society Perkin Transactions 1

Year:

1981

Language:

english

File:

PDF, 466 KB

english, 1981

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