Suggest a biosynthetic path to a-thujene. Question 3 CH CH3 CH3 H3C CH3 Hzc och H3C CH3 Create OscerSketch Answer 3 3-carene requires a special mechanism that involves loss of a proton and formation of a cyclopropane ring. CH3 6-8 $ CH3 HH3C- -CH3 Hzc CH Question 4 Complete the biosynthetic pathway to Camphene. The first step is like the first step for Borneol in Question 1. CH3 H2C H3C. CH3 H3C-SCHE Create OscerSketch Answer 4