Taraxasterol (anthesterin) is a triterpene derived from the mevalonate pathway and is found in dandelions.

In the second step if the oxidosqualene is folded in the chair conformation in the enzyme a cascade of cyclizations will occur that results in the formation of the dammarenyl cation.

This allows the baccharenyl double bond to attack the secondary positive charge and forms a pentacyclic ring system to yield the tertiary lupanyl cation.

A Wagner-Meerwein 1,2-alykl shift will occur to form the hexacyclic ring system and the secondary oleanyl cation.

This is followed by a Wagner-Meerwein 1,2-methyl shift to create the tertiary taraxasteryl cation.