Pseudolarenone, an unusual nortriterpenoid lactone with a fused 5/11/5/6/5 ring system featuring an unprecedented bicyclo[8.2.1]tridecane core from Pseudolarix amabilis†
Abstract
A phytochemical investigation of the cone of Pseudolarix amabilis led to the isolation of pseudolarenone (1), a structurally novel pentacyclic (5/11/5/6/5) nortriterpenoid