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  • Title: Complete (1)H and (13)C NMR assignments of two new trans-clerodane diterpenoids from Otostegia limbata.
    Author: Farooq U, Khan A, Ahmad VU, Azhar-Ul-Haq, Khan SS, Farooq R, Pervez A, Shah MM.
    Journal: Magn Reson Chem; 2007 Sep; 45(9):766-9. PubMed ID: 17661429.
    Abstract:
    Two new tricyclic trans-clerodane diterpenoids trivially named as ballotenic acid A (1) and ballodiolic acid A (2) have been isolated from ethyl acetate fraction of Otostegia limbata. The structure assignments are based on (1)H and (13)C NMR spectra, 2D NMR (HMQC, HMBC, COSY, NOESY and NOE) techniques and comparison with the literature data.
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