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Abstract Title:

New sesquiterpene lactones from Laurus nobilis leaves as inhibitors of nitric oxide production.

Abstract Source:

Planta Med. 2005 Aug;71(8):706-10. PMID: 16142632

Abstract Author(s):

Simona De Marino, Nicola Borbone, Franco Zollo, Angela Ianaro, Paola Di Meglio, Maria Iorizzi

Article Affiliation:

Dipartimento di Chimica delle Sostanze Naturali, Università degli Studi di Napoli Federico II, Napoli, Italy.

Abstract:

Two new metabolites 5alphaH,7alphaH-eudesman-4alpha,6alpha,11,12-tetraol (1) and 1beta,15-dihydroxy-5alphaH,7alphaH-eudesma-3,11(13)-dien-12,6alpha-olide ( 2) have been isolated from the methanolic extract of Laurus nobilis L. leaves. Their structures were determined through analysis of their one- and two-dimensional NMR spectral data ((1)H- and (13)C-NMR, DEPT, COSY, HMQC, HMBC and ROESY). The relative stereochemistry is proposed on the basis of combined J-based configuration analysis and ROESY data. In addition, three known sesquiterpene lactones santamarine (3), reynosin (4) and costunolide (5) along with blumenol C (6) were isolated and identified by spectral means. The isolated compounds 1 - 6 were found to inhibit nitric oxide (NO) production in lipopolysaccharide (LPS)-activated murine macrophages. The most active compound 2 potently inhibited NO (2)(-) release with an IC (50) value of 0.8 microM.

Study Type : In Vitro Study

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