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Applied Biological Chemistry
Fig. 4 | Applied Biological Chemistry

Fig. 4

From: Nuclear magnetic resonance assignment strategy for pentacyclic triterpenes, using lup-20(29)-ene from Pilotrichella flexilis as model system, combining spectrally filtered proton-to-carbon schemes and DFT–GIAO approach

Fig. 4

Two-dimensional 1H–1H homonuclear correlation spectrum via dipolar coupling (EXSY) of lup-20(29)-ene, with 1.4 s of mixing time. Key inter-nuclear correlations between resonances involving methyls are shown in the spectrum, as well as in the molecular formula

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