Figure 1.
Proposed biosynthetic pathway of osmanthuside B and its derivatives, including verbascoside, ligupurpuroside A, and echinacoside.
The proteins labeled in red are reported in this study. TGT, tyrosol glycosyltransferase; SHCT, salidroside hydroxycinnamoyltransferase; OBRT, osmanthuside B 1,4-rhamnosyltransferase; OBH, osmanthuside B hydroxylase.