Fig. 2. Key 1H–1H in Insulin-mimetic activity of 23-glycosyl oleanane triterpenoids isolated from Gymnema latifolium

Fig. 2. Key 1H–1H COSY (bold) and HMBC (1H → 13C, green arrows) correlations for compounds 1, 2, 5, and 7. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)