Patent ID: 7960589

Claim:
A method of making a compound of formula V, comprising reacting a compound of formula III, with an compound of formula IV, under conditions such that a compound of formula V is formed, wherein n is 0 to 50; MX n′ is B(OH) 2 ; R 1 is H or a protecting group comprising a carbonyl group; R 2 is a protecting group comprising a carbonyl group; R 3 is selected from H, an alkyl, substituted alkyl, aryl, substituted aryl, heterocycle, or a substituted heterocycle; and R 4 is a protecting group, wherein the protecting group comprises a group selected from the list consisting of a silyl group, an ester group, an acetal group, a carbonate group, a glycoyl group, a phosphoryl group, and an ether group.