主权项 |
1. A compound according to Formula II: wherein R1 and R2 are, independently, hydrogen, hydroxyl, halogen, C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl, amino, nitro, cyano, C1-C4 carbonyl, C1-C4 carbonylamino, C1-C4 alkoxy, C1-C4 sulfonyl, C1-C4 sulfonylamino, C1-C4 thioalkyl or C1-C4 carboxyl; wherein R4 is hydrogen, halogen, alkyl, alkenyl, alkynyl, alkoxy, amino, cyano, cycloalkyl, heterocycloalkyl, aryl, C1-C4 alkyl aryl, heteroaryl, C1-C4 alkyl heteroaryl, carbonyl, carbonylamino, thioalkyl, sulfonyl, sulfonylamino, acyl, or carboxyl; and wherein B is a chain containing from 0 to 3 member atoms, X represents n independently chosen member atoms which together form a ring structure and n is an integer from about 0 to about 5. |