%0 Journal Article %T Isolation and Spasmolytic Evaluation of New Alkaloids from <i>Dichrostachys cinerea</i> (L.) Wight et Arn. (Fabaceae) %A Amenan Genevi¨¨ve N¡¯guessan-Iri¨¦ %A Jo£¿l Dade %A Pierre Champy %A N¡¯doua Gis¨¨le Siransy-Kouakou %A V¨¦ronique Leblais %J Pharmacology & Pharmacy %P 684-688 %@ 2157-9431 %D 2013 %I Scientific Research Publishing %R 10.4236/pp.2013.49095 %X
Dichrostachys cinerea (L.) Wight et Arn. (Fabaceae) root bark is used in Ivorian Traditional Medicine to treat asthma, which is a respiratory disorder characterized by inflammation and the restriction of tracheal muscles obstructing the air circulation. The tracheal relaxant effect of a crude aqueous-alcoholic extract of the plant root bark was previously shown. For the present study, alkaloids were isolated from the same extract and investigated ex vivo in C57Bl/6j mice isolated trachea contracted with carbachol 1 ¦ÌM, in comparison with a reference bronchodilatator, i.e. salbutamol. Two extraction procedures allowed isolating 2 Alkaloids that monodimensional and bi-dimensional nuclear magnetic resonance (NMR) and mass specters allowed identifying a pyrolidine structure type nucleus with a long bi-hydroxyled alkyl chain. Alkaloid 1, carrier of a sugar, is a glycoside of Alkaloid 2. Both alkaloids induced similar spasmolytic effects, but Alkaloid 1 was more effective than Alkaloid 2 at 9 ¡Á 10-6 M (p £¼ 0.01), 3