N-MALEIMIDYL POLYMER DERIVATIVES
First Claim
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1. A multi-functional N-maleimidyl polymer derivative having the formula:
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X—
CH2CH2O—
(CH2CH2O)n—
CH2CH2-Lwherein;
L is the point of bonding to the nitrogen atom of the N-maleimidyl moiety;
X is amine; and
n is about 20 to about 4000.
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Abstract
The invention is directed to multi-functional N-maleimidyl polymer derivatives comprising a water soluble and non-peptidic polymer backbone having a terminal carbon, such as a poly(alkylene glycol), the terminal carbon of the polymer backbone being directly bonded to the nitrogen atom of a N-maleimidyl moiety without a linking group therebetween. The invention also provides two methods of preparing such linkerless N-maleimidyl polymer derivatives.
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1 Claim
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1. A multi-functional N-maleimidyl polymer derivative having the formula:
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X—
CH2CH2O—
(CH2CH2O)n—
CH2CH2-Lwherein; L is the point of bonding to the nitrogen atom of the N-maleimidyl moiety; X is amine; and n is about 20 to about 4000.
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Specification