The carrier is made by separately inducting hydrophilic carboxymethyl or hydroxyethyl and hydrophobilic alkyl or alkyonyl on the 6 location and 2 location of chitose framework to produce amphipathic chitose derivatives that can combine to nanomicelle naturally.
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Various alkyl or haloalkyl substitutions are incorporated at carbon-25.
各种烷基或卤代烷基取代基结合在碳-25上。
The super-branched polyester of the invention has the following structural formula, wherein R is alkyl or fluorine-containing alkyl of different types.
本发明的超支化聚酯，具有如下结构式：式中R为不同种类的烷基或者含氟烷基。
The present invention relates to compounds of formula (I) wherein R1 is hydrogen, lower alkyl or benzyl which may be optionally substituted by halogen or lower alkoxy;
本发明涉及式（I）化合物及其药用活性盐，其中R1是氢、低级烷基或苄基，其可任选地被卤素或低级烷氧基取代；
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