Structure elucidation of β-stigmasterol and β-sitosterol from Sesbania grandifora [Linn.] Pers. and β-carotene from Heliotropium indicum Linn. by NMR spectroscopy

Authors

  • Jan-Michael C. Cayme Chemistry Department, De La Salle University, Manila
  • Consolacion Y. Ragasa Chemistry Department, De La Salle University, Manila

DOI:

https://doi.org/10.26534/kimika.v20i1.5-12

Keywords:

Sesbania grandiflora (Linn.) Pers., Leguminosae, Heliotropium indicum Linn., Boraginaceae, β-stigmasterol, β-sitosterol, oleanolic acid, lutein, β-carotene, polyprenols, antimicrobial activity

Abstract

The flowers of Sesbania grandiflora (Linn.) Pers. afforded a 3:2 mixture of β-stigmasterol (1a) and β-sitosterol (1b), and oleanolic acid (2), while the leaves of Heliotropium indicum Linn. yielded β-carotene (3), lutein ( 4), a mixture of polyprenols (5), and a mixture of β-stigmasterol and β-sitosterol. The structures of 1a, 1b, and 3 were elucidated by extensive 1D and 2D NMR analyses. Antimicrobial activity tests on 3 indicated that it has high activity against Pseudomonas aeruginosa and Aspergillus niger, slight activity against Staphylococcus aureus, Escherichia coli, Candida albicans, and Trichophyton mentagrophytes, and inactive against Bacillus subtilis.

Downloads

How to Cite

Cayme, J.-M. C., & Ragasa, C. Y. (2004). Structure elucidation of β-stigmasterol and β-sitosterol from Sesbania grandifora [Linn.] Pers. and β-carotene from Heliotropium indicum Linn. by NMR spectroscopy. KIMIKA, 20(1), 5–12. https://doi.org/10.26534/kimika.v20i1.5-12

Issue

Vol. 20 (2004)

Section

Research Articles

License

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).