Patent ID: 6951963

Claim:
A process for preparing a compound of formula I: wherein R 1 is a 9-fluorenylmethoxycarbonyl group; and n is an integer from 7 to 11; the process comprising cleaving the double bond of a compound of formula II: wherein R 2 is hydrogen or C 1-12 hydrocarbyl; wherein the step of cleaving the double bond comprises the steps of: (a) reacting a compound of formula II with ozone to form an ozonide intermediate; (b) reacting the ozonide intermediate from step (a) with a reducing agent to form a compound of formula I; or the step of cleaving the double bond comprises the steps of: (a) reacting a compound of formula II with a glycol-forming oxidizing agent to form a glycol intermediate; (b) reacting the glycol intermediate from step (a) with a glycol-cleaving oxidizing agent to provide a compound of formula I.