Terengganensines A and B, dihydroeburnane alkaloids from Kopsia terengganensis

Tetrahedron Letters

Volumn 38, Issue 9, 1997, Pages 1571-1574

  Uzir, Shasya ^a   Mustapha, Ali M ^a   Hadi, A Hamid A ^a   Awang, Khalijah ^a   Wiart, Christophe ^b   Gallard, Jean François ^b   Païs, Mary ^b  

^a UNIVERSITY OF MALAYA   (Malaysia)

^b CNRS   (France)

Author keywords

[No Author keywords available]

Indexed keywords

INDOLE ALKALOID; QUEBRACHAMINE; VINBURNINE;

ARTICLE; CONFORMATION; DRUG IDENTIFICATION; DRUG ISOLATION; DRUG STRUCTURE; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; PLANT;

EID: 0031550843     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(97)00152-4     Document Type: Article

References (10)

1. 1. Awang, K; Païs, M.; Sévenet, T.; Schaller H.; Nasir A.M.; Hamid A.H.A., Phytochemistry, 1991, 30, 3164-3167.
2. 2. Awang, K; Sévenet, T.; Hamid A.H.A.; David, D; Païs, M. Tetrahedron Lett., 1992, 33, 2493-2396.
3. 3. Awang, K.; Sévenet, T; Hamid A.H.A.; Païs, M., J. Nat. Prod., 1993, 55, 1134-1139.
4. 4. Awang, K.; Thoison, O.; Hamid A.H.A.; Païs, M.; Sévenet, T., Nat. Prod. Lett., 1993, 3, 283-287.
5. 5. This work has been done in the framework of a collaborative program on Malaysian plants between CNRS (France) and the University of Malaya (Malaysia).
6. 6. Bark of K. terengganensis L. Allorge & C. Wiart was collected in Dungun, Terengganu, Malaysia. Voucher specimens (KL 4432) identified by L. Allorge were deposited at the Muséum d'Histoire Naturelle in Paris and at the Herbarium of Department of Chemistry, University of Malaya.
7. 7. Kam, T.S.; Tan, P.S.; Wei, C., Phytochemistry, 1993, 33, 921-924.
8. 10, while H-17 resonated at somewhat lower field (δ 4.27 in eburnamenine). This may be explained by the resonance effect due to electron donation by the nitrogene lone pair, which is not trapped in the indolic aromatic system.
9. 9. Kam, T.S.; Tan, P.S.; Chuah, C.H., Phytochemistry, 1992, 31, 2936-2938.
10. 10. Takeno, S.; Yonaga, M.; Morimoto, M.; Ogasawara, K., J. Chem. Soc., Perkin I, 1985, 305-309.