Cycloalkanes

Cyclopropane

Cyclobutane

Cyclopentane
Cyclohexane Conformations

Chair

Twist-boat

Boat

Dimethyl Cycloalkanes: Six Isomers

Cis-1,2

Cis-1,3

Cis-1,4

Trans-1,2

Trans-1,3

Trans-1,4

Polycyclic Compounds
A.
Cis-decalin

Trans-decalin
B.
Cholesterol

Estradiol
C.
Norbornane

Camphor
D.
Morphine

Heroin