Patent ID: 8754251

Claim:
A protected organoboronic acid of the formula I: wherein R 1 is selected from cycloalkyl and substituted cycloalkyl; and R 2a , R 2b , R 2c , and R 2d are independently selected from hydrogen, alkyl, substituted alkyl, halogen, hydroxyl, cyano, phosphate, alkoxy, substituted alkoxy, carboxyl, carboxyl ester, aryl, substituted aryl, heteroaryl, substituted heteroaryl, heterocyclyl, substituted heterocyclyl, alkenyl, substituted alkenyl, amino, substituted amino, acyl, acylamino, aminoacyl, alkoxycarbonylamino, thiol, alkylthiol, substituted thioalkoxy, and sulfonyl, wherein at least one of R 2a , R 2b , R 2c , and R 2d is not hydrogen.