Amino-polyesters for drug delivery

A compound of Formula (I):

• wherein:
• X is O, S, or NR4;
• R is optionally substituted heteroaliphatic, optionally substituted heterocyclyl, or a combination thereof, wherein R comprises one or more amine moieties, and wherein all of said amine moieties are tertiary;
• each R1 independently is optionally substituted aliphatic or optionally substituted heteroaliphatic;
• R′ is hydrogen or a group of the formula:
• wherein:
• each R2 and R3 independently is hydrogen, optionally substituted aliphatic, optionally substituted heteroaliphatic, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl;
• or
• R2 and R3 are combined to form an optionally substituted heterocyclyl;
• each R4 independently is hydrogen, optionally substituted aliphatic, or optionally substituted heteroaliphatic;
• each n independently is an integer between 1 and 20, inclusive;
• and
• m is an integer between 1 and 10, inclusive.