Patent ID: 7122673

Claim:
A compound of general Formula (IIa): wherein R 1 –R 8 , R 14 and Y may be the same or different and each are selected from hydrogen, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally protected hydroxy, optionally substituted amino, optionally substituted alkoxy, optionally substituted alkenoxy, optionally substituted alkynoxy, optionally substituted aryl, optionally substituted heterocyclyl, carboxy, carboxy ester, carboxamido, acyl, acyloxy, mercapto, optionally substituted alkylthio, halogen, nitro, sulfate, phosphate and cyano; is an optional double bond; Z is a carbon, nitrogen, oxygen, or sulfur; and n is selected from 0, 1, 2, or 3; wherein when n is 1, Z is carbon, nitrogen, oxygen or sulfur; and when n is 2 or 3, Z is selected from carbon, nitrogen and oxygen, wherein at least one of Z is carbon and furthermore, when n is 3, heteroatoms can not be adjacent to each other; and the counter ion ⊖ is a stable basic ion.