an enantioselective lipase-catalyzed acylation of a secondary alcohol, (ii) an efficientdiastereoselective addition of an alkyl-lithium reagent to a glyceraldehyde derivative, (iii) conversion of an epoxide to a one-carbon homologated allylicalcohol via a sulphorane addition, and (iv) a cross metathesis between two chiralallylicalcohols and subsequent functionalization to obtain the ethyl ester of