Terpenoids from Turraeanthus species.
Chemical investigation of the root bark of Turraeanthus mannii and the stem of T. longipes resulted in the isolation of two new diterpenes, 13-methyl-labda-8(17)-en-15-oic acid (1) and 13-(hydroxymethyl)-14-hydroxy-ent-labda-8(17)-en-15-oic acid (2), along with two known diterpenes, 19-hydroxy-ent-labda-8(17),13-dien-15,16-olide (3) and 19-acetoxy-ent-labda-8(17),13-dien-15,16-olide (4), and the phytosterol, stigmasterol. The structure elucidation of the new compounds has been achieved using spectroscopic techniques.
University of Douala, Faculty of Science, Department of Chemistry, P.O. Box 24157 Douala-Cameroon. jucathmas@yahoo.fr
Juliette Catherine
JC
Vardamides
Valerie Tedjon
VT
Sielinou
Sergi Herve
SH
Akone
Augustin Ephrem
AE
Nkengfack
Berhanu M
BM
Abegaz
D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D029582:Meliaceae / Q000737:chemistry*; D015394:Molecular Structure; D013265:Stigmasterol / Q000302:isolation & purification
D004224:Diterpenes; D013265:Stigmasterol