Escobedo-Martínez C, Concepción Lozada M, Hernández-Ortega S, Villarreal ML, Gnecco D, Enríquez RG, Reynolds W. (1) H and (13) C NMR characterization of new cycloartane triterpenes from Mangifera indica.
Magn Reson Chem 2012;
50:52-57. [PMID:
22271257 DOI:
10.1002/mrc.2836]
[Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Revised: 09/06/2011] [Accepted: 09/12/2011] [Indexed: 05/31/2023]
Abstract
From the stem bark of Mangifera indica, seven cycloartane-type secondary metabolites were isolated. Compound 1 has been isolated for the first time from M. indica, whereas compounds 2 (2a and 2b, as an epimeric mixture), 3, and 4 are new triterpenoid-type cycloartanes. Unambiguous (13) C and (1) H NMR assignments for these compounds and the known compounds mangiferonic acid (compound 5), isomangiferolic acid (compound 6), ambolic acid (compound 7), and friedelin (compound 8) are reported; the latter because full NMR data for these compounds are not available in the literature.
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