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• W2003352189 abstract "The copolymerization of 3-(S)-[(benzyloxycarbonyl)methyl]-1,4-dioxane-2,5-dione (BMD) and l-lactide (LAC) was carried out in bulk at relatively low BMD/LAC feed ratios with stannous 2-ethylhexanoate as the catalyst. The resulting copolymers were subjected to hydrogenolysis at atmospheric pressure in the presence of a palladium on charcoal catalyst to remove the pendant benzyl groups quantitatively. The deprotected copolymers consisted of l-lactic (L), glycolic (G) and l-α-malic acid (M) repeating units, with the copolymer composition being almost identical to the monomer feed composition.13C n.m.r. spectroscopy revealed that the BMD units (G–M) had been randomly incorporated into the copolymer (L–L). These poly(α-hydroxy acid)s with pendant car☐yl groups were found to hydrolyse more rapidly than poly(l-lactide), because of the water-absorbing and catalytic activities of the car☐yl moieties. They were allowed to react with p-azidophenacyl bromide in the presence of triethylamine to form photo affinity labelling groups at the car☐yl functionalities. These findings suggested that the malic-acid-containing poly(α-hydroxy acid)s should have a high potential for use as functionalized bioresorbable polymers." @default.
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• W2003352189 date "1993-04-01" @default.
• W2003352189 modified "2023-10-17" @default.
• W2003352189 title "Copolymerization of 3-(S)-[(benzyloxycarbonyl)methyl]-1,4-dioxane-2,5-dione and l-lactide: a facile synthetic method for functionalized bioabsorbable polymer" @default.
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• W2003352189 doi "https://doi.org/10.1016/0032-3861(93)90335-8" @default.
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