Patent ID: 6805876
Filing Date: 2004-10-19
Classification: A61K,A61L,C08G

Abstract:
A biodegradable polymer comprising at least one repeat unit according to formula A: whereinR is hydrogen, optionally substituted alkyl, optionally substituted heteroalkyl, optionally substituted alkenyl, optionally substituted alkynyl, or optionally substituted cycloalkyl; R1 and R2 are each independently chosen from the group consisting of H, optionally substituted alkyl, optionally substituted heteroalkyl, optionally substituted alkenyl, optionally substituted alkynyl, and optionally substituted; x is 2, 3, or 4; and at least one repeat unit selected from the group consisting of optionally substituted alkyl, optionally substituted heteroalkyl, optionally substituted alkenyl, optionally substituted alkynyl, â€”O(CR1R2)cC(O)â€” where c is between about 1 and about 10, (CH2)aâ€”{O(CH2)a}bâ€” where a is between about 1 and about 7 and b is between about 1 and about 500, optionally substituted aryl, and optionally substituted heteroaryl; or at least one repeat unit according to formula B: whereinR3, R4, R5 and R6 are each independently chosen from the group consisting of H, optionally substituted heteroalkyl, optionally substituted alkyl, optionally substituted C2-12-alkenyl, optionally substituted C2-12-alkynyl, and optionally substituted alkoxy.