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J Asian Nat Prod Res. 2012;14(12):1191-5. doi: 10.1080/10286020.2012.734299. Epub 2012 Nov 8.

New iridoid glycoside from Gratiola officinalis.

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1
HEJ Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan. malikhejric@gmail.com

Abstract

A new iridoid glycoside, 1β,6β-di-O-trans-cinnamoyl-9-O-β-D-glucopyranosyl-3-iridene-5β-ol (1), along with four known compounds loliolide (2), β-sitosterol-3-O-β-D-glucopyranoside (3), betulinic acid (4), and β-amyrin (5), was isolated from the aerial parts of Gratiola officinalis L. The structure of the new compound was deduced on the basis of 1D ¹H and ¹³C NMR and 2D HMQC, HMBC, and COSY experiments, and mass spectrometric techniques (EI-MS and HR-EI-MS). The relative configuration of 1 was assigned by comparative analysis of the NMR spectral data with known analogs, together with NOESY experiments.

PMID:
23134347
DOI:
10.1080/10286020.2012.734299
[Indexed for MEDLINE]
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