Chapter 20.6, Problem 11P

Interpretation Introduction

Interpretation:

The isoprene units has to be marked in lycopene and $\text{β}$-carotene and has to detect the similarity in the way which squalene, lycopene and $\text{β}$-carotene are biosynthesized.

Concept Introduction:

Terpenes are made by joining five-carbon units, usually in a head to tail-fashion.

Monoterpenes are those terpenes with two isoprene units-have 10 carbons, sesquiterpenes have 15 carbons, diterpenes have 20 carbons, triterpenes have 30 carbons and tetraterpenes have 40 carbons.

Isopentenyl pyrophosphate (isoprene) is the five-carbon compound used for the biosynthesis of terpenes.

Isoprene unit: