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Prenylated chalcones, flavone and other constituents of the twigs of Dorstenia angusticornis and Dorstenia barteri var. subtriangularis.
Phytochemistry. 2005 Mar; 66(6):687-92.P

Abstract

The twigs of Dorstenia angusticornis and Dorstenia barteri var. subtriangularis yielded 16 compounds. Two novel diprenylated chalcones: 3,5'-di-(2-hydroxy-3-methylbut-3-enyl)-4,2',4'-trihydroxychalcone, 3, 4-(2,2-dimethylpyrano)-3'-(2-hydroxy-3-methylbut-3-enyl)-2',4'-dihydroxychalcone and the known stipulin were isolated from both species. 3-(2-Hydroxy-3-methylbut-3-enyl)-5'-(3,3-dimethylallyl)-4,2',4'-trihydroxychalcone and the known compounds: 4-hydroxylonchocarpin, kanzonol B, bartericins A, B, C and 3'-(2-hydroxy -3-methylbut-3-enyl)-4,2',4'-trihydroxychalcone were isolated from D. barteri while the known compounds: gancaonin Q, paratocarpins C, F, and lupeol were obtained from Dorstenia angusticornis. beta-Sitosterol and its beta-d-glucopyranoside were isolated from both species. Structures of these secondary metabolites were established using spectroscopic analysis, especially, NMR spectra in conjunction with 2D experiments, COSY, HMQC and HMBC.

Authors+Show Affiliations

Ngadjui BT
Department of Organic Chemistry, Faculty of Science, University of Yaoundé 1, BP 812, Yaoundé, Cameroon. bngadjui@uyc.uninet.cm
Watchueng J
No affiliation info available
Keumedjio F
No affiliation info available
Ngameni B
No affiliation info available
Simo IK
No affiliation info available
Abegaz BM
No affiliation info available

MeSH

ChalconesFlavonesMolecular StructureMoraceae

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15771891

Citation

Ngadjui, Bonaventure T., et al. "Prenylated Chalcones, Flavone and Other Constituents of the Twigs of Dorstenia Angusticornis and Dorstenia Barteri Var. Subtriangularis." Phytochemistry, vol. 66, no. 6, 2005, pp. 687-92.
Ngadjui BT, Watchueng J, Keumedjio F, et al. Prenylated chalcones, flavone and other constituents of the twigs of Dorstenia angusticornis and Dorstenia barteri var. subtriangularis. Phytochemistry. 2005;66(6):687-92.
Ngadjui, B. T., Watchueng, J., Keumedjio, F., Ngameni, B., Simo, I. K., & Abegaz, B. M. (2005). Prenylated chalcones, flavone and other constituents of the twigs of Dorstenia angusticornis and Dorstenia barteri var. subtriangularis. Phytochemistry, 66(6), 687-92.
Ngadjui BT, et al. Prenylated Chalcones, Flavone and Other Constituents of the Twigs of Dorstenia Angusticornis and Dorstenia Barteri Var. Subtriangularis. Phytochemistry. 2005;66(6):687-92. PubMed PMID: 15771891.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Prenylated chalcones, flavone and other constituents of the twigs of Dorstenia angusticornis and Dorstenia barteri var. subtriangularis. AU - Ngadjui,Bonaventure T, AU - Watchueng,Jean, AU - Keumedjio,Felix, AU - Ngameni,Bathélémy, AU - Simo,Ingrid K, AU - Abegaz,Berhanu M, PY - 2004/05/06/received PY - 2004/10/15/revised PY - 2005/3/18/pubmed PY - 2005/6/21/medline PY - 2005/3/18/entrez SP - 687 EP - 92 JF - Phytochemistry JO - Phytochemistry VL - 66 IS - 6 N2 - The twigs of Dorstenia angusticornis and Dorstenia barteri var. subtriangularis yielded 16 compounds. Two novel diprenylated chalcones: 3,5'-di-(2-hydroxy-3-methylbut-3-enyl)-4,2',4'-trihydroxychalcone, 3, 4-(2,2-dimethylpyrano)-3'-(2-hydroxy-3-methylbut-3-enyl)-2',4'-dihydroxychalcone and the known stipulin were isolated from both species. 3-(2-Hydroxy-3-methylbut-3-enyl)-5'-(3,3-dimethylallyl)-4,2',4'-trihydroxychalcone and the known compounds: 4-hydroxylonchocarpin, kanzonol B, bartericins A, B, C and 3'-(2-hydroxy -3-methylbut-3-enyl)-4,2',4'-trihydroxychalcone were isolated from D. barteri while the known compounds: gancaonin Q, paratocarpins C, F, and lupeol were obtained from Dorstenia angusticornis. beta-Sitosterol and its beta-d-glucopyranoside were isolated from both species. Structures of these secondary metabolites were established using spectroscopic analysis, especially, NMR spectra in conjunction with 2D experiments, COSY, HMQC and HMBC. SN - 0031-9422 UR - https://www.unboundmedicine.com/medline/citation/15771891/Prenylated_chalcones_flavone_and_other_constituents_of_the_twigs_of_Dorstenia_angusticornis_and_Dorstenia_barteri_var__subtriangularis_ DB - PRIME DP - Unbound Medicine ER -