Patent ID: 7888338

Claim:
A compound having the formula: wherein R 2a is hydrogen or C 1 -C 20 substituted or unsubstituted linear, or branched hydrocarbyl, or C3 to C20 substituted or unsubstituted cyclic hydrocarbyl, wherein said substitution is chosen from: i) —NHCOR 30 ; ii) —COR 30 ; iii) —CO 2 R 30 ; iv) —OCOR 30 ; v) —C(═NH)NH 2 ; vi) —NHC(═NH)NH 2 ; vii) —N(R 30 ) 2 ; viii) —NHC 6 H 5 ; ix) ═CHC 6 H 5 ; x) —CON(R 30 ) 2 ; xi) —CONHNH 2 ; xii) NHCN; xiii) —OCN; xiv) —CN; xv) halogen; xvi) —NHN(R 30 ) 2 ; xvii) —OR 30 ; xviii) —NO 2 ; xix) —CH m X n ; wherein X is halogen, m is selected from 0, 1 and 2, n is selected from 0, 1, 2 and 3, and m+n=3; xx) —SO 2 R 30 ; xxi) —OSO 2 R 30 ; xxii) —OSO 3 R 30 ; xxiii) —SO 2 N(R 30 ) 2 ; xxiv) ═O; xxv) ═NR 30 ; xxvi) C 1 -C 20 acyclic hydrocarbyl; xxvii) C 3 -C 20 cyclic hydrocarbyl; xxviii) two hydrogen atoms on adjacent carbon atoms are substituted by a single oxygen atom, thereby forming an epoxy unit; and xxix) two hydrogen atoms on non-adjacent carbon atoms are substituted to form a C 3 -C 20 cyclic hydrocarbyl; and wherein R 30 is selected from the group consisting of hydrogen, C 1 -C 10 linear or branched alkyl, C 2 -C 10 linear or branched alkenyl, C 2 -C 10 linear or branched alkynyl, C 3 -C 20 heterocyclic, C 5 -C 20 heteroaryl and C 6 -C 14 aryl.