Scheme 2. (a) Lactide Polymerization Coinitiated by Carbohydrates; (b) Copolymerization of Lactone Derived from D-Gluconolactone and ε-Caprolactone (CL) Scheme 3. Polyesters Based on Pentitols and Pentaric Acid Scheme 4. Protein-Resistant Polyesters Based on Galactitol and D-Mannitol Scheme 5. Polyesters Based on L-Tartaric Acid Derivatives Scheme 6. PBS Copolyesters Based on L-Tartaric Acid Derivatives Scheme 7. Erythritol-Based Polyesters Containing Triazol Rings