Patent ID: 8232399

Claim:
A chiral ligand of Formula I: wherein: R 1 , R 2 , R 3 , R 4 and R 5 are independently selected from the group consisting of hydrogen, halogen, C 1-10 alkyl, C 2-10 alkenyl, C 2-10 alkynyl, C 1-10 alkoxy, C(O)R 6 , C(O)NHR 6 , Si(R 6 ) 3 , benzyl and aryl; X is selected from the group consisting of OH, OR 7 , O-Prot and P(R 7 ) 2 where Prot represents a hydroxy protecting group; and R 6 and R 7 are selected from the group consisting of hydrogen, C 1-10 alkyl, C 2-10 alkenyl, C 2-10 alkynyl, C 1-10 alkoxy, phenyl, and aryl.