Fig. 5. Key 1H-1H in Dimeric and esterified sesquiterpenes from the liverwort Chiastocaulon caledonicum

Fig. 5. Key 1H-1H COSY (bold bonds) and HMBC (blue arrows) correlations for 6 and 7. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)