Herbal Medicines Targeting the Improved β-Cell Functions and β-Cell Regeneration for the Management of Diabetes Mellitus

Figure 4

Structures of metabolites (a) speciophylline (5), (b) mitraphylline (6), (c) uncarine F (7), (d) pteropodine (8), (e) isomitraphylline (9), and (f) isopteropodine (10) present in Uncaria tomentosa (Willd.) DC targeting β-cells.

(a)

(b)

(c)

(d)

(e)

(f)