主权项 |
1. A compound represented by Formula I: wherein, independently for each occurrence:
Z is hydrogen or optionally substituted alkyl, acyl, acyloxy, aryl, sulfonate, sulfone, sulfoxide, or sulfonamide;L is —(C(R1)2)n—, or —(C(R1)2)nO—;R is selected from the group consisting of hydrogen, hydroxyl, halogen, nitro, cyano, alkyl, alkenyl, acyl, aryl, alkylamino, acylamino, alkoxy, acyloxy, hydroxyalkyl, alkoxyalkyl, aminoalkyl, (alkylamino)alkyl, alkylthio, thioalkyl, (alkylthio)alkyl, alkynyl, carboxyl, sulfate, amino, ether, thioether, ester, amide, thioester, carbonate, carbamate, urea, sulfonate, sulfone, sulfoxide, sulfonamide, heteroaryl, carbocyclyl, heterocyclyl, aralkyl, arylalkoxy, heteroaralkyl, carbocyclylalkyl, heterocyclylalkyl, and —OR2; provided that two instances of R represent —OR2;R1 is hydrogen or alkyl;R2 is hydrogen or optionally substituted alkyl, acyl, or aryl; andn is 1, 2, 3, 4, 5, or 6. |